sorting

PHOTO

Wed Dec 09 2020 03:00:16 GMT+0000 (UTC)

Saved by @mahmoud hussein #c++

 
#include<iostream>
#include <fstream>
using namespace std;
void selectionSort(double list[], int listSize);
int main()
{
    double list[] = { 3.4, 5, 3, 3.5, 2.2, 1.9, 2 };

    selectionSort(list, 7);
    for (int i = 0; i < 7; i++)
    {
        cout << list[i]<<" ";
    }
}
//decreasing order
void selectionSort(double list[], int listSize)
{
    for (int i = listSize-1; i >= 0 ; i--)
    {
        double currentMax = list[i];
        int currentMaxIndex = i;
        for (int j = i - 1; j >= 0; j--)
        {
            if (currentMax < list[j])
            {
                currentMax = list[j];
                currentMaxIndex = j;
            }
        }
            if (currentMaxIndex != i)
            {
                list[currentMaxIndex] = list[i];
                list[i] = currentMax;
            }
   
    }
}
//increasing order
void selectionSort(double list[], int listSize)
{
    for (int i = 0; i < listSize - 1; i++)
    {
        double currentMin = list[i];
        int currentMinIndex = i;
        for (int j = i + 1; j < listSize; j++)
        {
            if (currentMin > list[j])
            {
                currentMin = list[j];
                currentMinIndex = j;
            }
        }
            if (currentMinIndex != i)
            {
                list[currentMinIndex] = list[i];
                list[i] = currentMin;
            }
        
    }
}

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c++ loops

@mahmoud hussein

(Occurrence of max numbers) Write a program that reads integers, finds the largest of them, and counts its occurrences. Assume that the input ends with number 0. Suppose that you entered 3 5 2 5 5 5 0; the program finds that the largest is 5 and the occurrence count for 5 is 4 (Fibonacci Series) The Fibonacci series is a series that begins with 0 and 1 and has the property that each succeeding term is the sum of the two preceding terms. For example, the third Fibonacci number is 1 which is sum of 0 and 1. The next is 2, which is a sum of 1 + 1. Write a program that displays the first ten numbers in a Fibonacci series **5.21 (Display numbers in a pyramid pattern) Write a nested for loop that prints the following output: (Compute the greatest common divisor) Another solution for Listing 5.10 to find the greatest common divisor (GCD) of two integers n1 and n2 is as follows: First find d to be the minimum of n1 and n2, then check whether d, d-1, d-2, . . . , 2, or 1 is a divisor for both n1 and n2 in this order. The first such common divisor is the greatest common divisor for n1 and n2. Write a program that prompts the user to enter two positive integers and displays the GCD. sorting

#include<iostream>
using namespace std;
bool issafe(int** arr,int x,int y,int n){
    for(int row=0;row<=x;row++){
        if(arr[x][y]==1){
            return false;
        }
    }
    int row=x;
    int col=y;
    while(row>=0 && col>=0){
        if(arr[row][col]==1){
            return false;
        }
        row--;
        col--;
    }
     row=x;
     col=y;
    while(row>=0 && col<n){
        if(arr[row][col]==1){
            return false;
        }
        row--;
        col++;
    }
    return true ;
}
bool nqueen(int** arr,int x,int n){
    if(x>=n){
        return true;
    }
    for(int col=0;col<=n;col++){
        if(issafe(arr,x,col,n)){
            arr[x][col]==1;
            if(nqueen(arr,x+1,n)){
                return true;
            }
            arr[x][col]=0;  //backtracking
            
        }
    }
    return false;
}
int main(){
    int n;
    cin>>n;
    int** arr=new int*[n];
    for(int i=0;i<n;i++){
        arr[i]=new int[n];
        for(int j=0;j<n;j++){
            arr[i][j]=0;

        }
    }
    if(nqueen(arr,0,n)){
        for(int i=0;i<n;i++){
            for(int j=0;j<n;j++){
                cout<<arr[i][j]<<"";
            }cout<<endl;
        }
    }


    return 0;
}

**8.11 (Game: nine heads and tails)

#include <iostream>
#include<cmath>
#include<ctime>
#include<string>
#include <iomanip>
#include <fstream>

using namespace std;




void decToBinary(int n)
{
    // array to store binary number 
    int binaryNum[3][3];
    
    //converting to binary 
    for (int i = 0; i < 3; i++) 
    {
        for (int j = 0; j < 3; j++)
        {
            binaryNum[i][j] = n % 2;
            n = n / 2;

        }
     }       

    // printing binary> array in reverse order 
    for (int i = 3-1; i >= 0; i--){
        for (int j = 3 - 1; j >= 0; j--)
        {
            if (binaryNum[i][j] == 0)
                cout << "H" << " ";
            else
                cout << "T" << " ";
        }
        cout << endl;
    }
    
 }

int main()
{
    int n;
    cout << "Enter a decimal number between 1 and 512 ";
    cin >> n;

    decToBinary(n);
    return 0;
}

Difference Between ios::ate and ios::app

https://stackoverflow.com/questions/10359702/c-filehandling-difference-between-iosapp-and-iosate#:~:text=ios%3A%3Aapp%20%22set%20the,file%20when%20you%20open%20it.&text=The%20ios%3A%3Aate%20option,to%20the%20end%20of%20file.

Write a program that displays the first 100 emirps

#include <iostream>
#include<cmath>
#include<ctime>
#include<string>
#include <iomanip>
#include <fstream>

using namespace std;


bool primeNumber(int n);
bool Emirp(int n);
int reversal(int n);
int recursive(int a, int b);

int main()
{
	
	int count = 0;
	int number = 13;
	while (count <= 100)
	{
		if (Emirp(number))
		{
			count++;
			if (count % 10 == 0)
				cout << setw(7) << number << endl;
			else
				cout << setw(7) << number;
		}
		number++;
	}
		

}
bool primeNumber(int n) {
	
		for (int i = 2; i <= n / 2; i++) {
			
			if (n % i == 0) {

				return false;
			}
		}
		return true;
}

bool Emirp(int n) {
	

	return primeNumber(n) && primeNumber(reversal(n));
	
}

int reversal(int n) {
	
		if (n < 10) {
			
				return n;
			
		}
		return recursive(n % 10, n / 10);
	
}

int recursive(int a, int b) {

	if (b < 1) {

		return a;

	}
	return recursive(a * 10 + b % 10, b / 10);
	
}

#c++ #algorithms #interviewquestions #arrays

Kadane’s Algorithm

int maxSubArraySum(int a[], int size) 
{ 
int max_so_far = 0, max_ending_here = 0; 
for (int i = 0; i < size; i++) 
{ 
	max_ending_here = max_ending_here + a[i]; 
	if (max_ending_here < 0) 
		max_ending_here = 0; 

	/* Do not compare for all elements. Compare only 
		when max_ending_here > 0 */
	else if (max_so_far < max_ending_here) 
		max_so_far = max_ending_here; 
} 
return max_so_far; 
}

yourHand_GlobalIntrerfacev1.0_firmware

///LIBRARIES & SPECIFIC PARAMETERS
#include <Arduino.h>
#include <Wire.h>
#include <Adafruit_PWMServoDriver.h>
#include <U8g2lib.h>

Adafruit_PWMServoDriver servo = Adafruit_PWMServoDriver(0x40);  //ServoMotor Driver Controller I2C Address
U8G2_SH1106_128X64_NONAME_F_HW_I2C u8g2(U8G2_R0, /* reset=*/ U8X8_PIN_NONE); //OLED Constructor

//- - - - VARIABLES & METHODS - - - -//

#define jky 13              //Joystick button pin
#define emgPin A0           //EMG signal pin
#define emgThreshold 500    //EMG signal detection threshold   

/*----OLED Display & Driver----*/
void u8g2_prepare(void) {
  u8g2.setFontMode(1);              //Enable Transparent Font
  u8g2.setFont(u8g2_font_6x13_tf);  //Set font Width: 6px / Height: 13px
  u8g2.setFontRefHeightExtendedText();    
  u8g2.setFontPosTop();             //Origin Position of Text
  u8g2.setFontDirection(0);         //Font direction 0º
}
//Custom Drawn Symbols
static const unsigned char back[] U8X8_PROGMEM  = {
  0x04, 0x06, 0x7F, 0x86, 0x84, 0x60, };

/*---- Servo Driver Variables ----*/
#define Freq (uint8_t) 50     //Servo working frequency

#define posMin 102
#define posMax 512

//Finger Number Assignation for Servo Control
#define thumb (uint8_t) 0
#define index (uint8_t) 1
#define middle (uint8_t) 2 
#define ring (uint8_t) 3
#define pinky (uint8_t) 4
#define wrist (uint8_t) 5

//Method to map servo position from pulses to degrees
void setServo(uint8_t n_servo, uint8_t angulo){
  int duty;
  duty=map(angulo, 0, 180, posMin, posMax);
  servo.setPWM(n_servo, 0, duty);
}

//Method for EMG signal detection and actuation
void emg(void (*pointer)()){
  if((analogRead(A0))>emgThreshold){
    pointer();    
  }
  else{
    openHand();
  }
}

/*---- Hand Movements Methods ----*/
void closeHand(void){
    setServo(thumb,170);
    setServo(index,170);
    setServo(middle,175);
    setServo(ring,151);
    setServo(pinky,161);
    setServo(wrist,180);
}
void openHand(void){
    setServo(thumb,13);
    setServo(index,10 );
    setServo(middle,13);
    setServo(ring,13);
    setServo(pinky,13);
    setServo(wrist,180);
}
void rock_servo(void){
    setServo(thumb,170);
    setServo(index,13);
    setServo(middle,175);
    setServo(ring,151);
    setServo(pinky,13);
    setServo(wrist,180);
}
void ronaldinho_servo(){
    setServo(thumb,13);
    setServo(index,156);
    setServo(middle,145);
    setServo(ring,151);
    setServo(pinky,13);
    while(analogRead(A0)>emgThreshold){
      setServo(wrist,150);
      delay(400);
      setServo(wrist,180);
      delay(500);
    }
}
void point_servo(void){
    setServo(thumb,170);
    setServo(index,13);
    setServo(middle,145);
    setServo(ring,151);
    setServo(pinky,161);
    setServo(wrist,180);
}
void thumbsUp_servo(void){
    setServo(thumb,13);
    setServo(index,156);
    setServo(middle,145);
    setServo(ring,151);
    setServo(pinky,161);
    setServo(wrist,180);
}

/*---- Joystick Button----*/
#define jkyX A1
#define jkyY A2

uint8_t swbtn_state=0;    // Memory Storage Byte
bool btn_val=0;           // Current state of the button
bool btn_oldVal=1;        // Previous state of the button  

//Joystick Button Method
void btn_Jky(uint8_t x){
  btn_val=digitalRead(jky);   // read pin button
  if (btn_val == LOW && btn_oldVal == HIGH){
      swbtn_state=x;    
      delay(10);   
  }
  btn_oldVal=btn_val;
}

/*- *- *- *- - MENU SYSTEM - -* -* -* -*/
uint8_t M1 = 0; //Memory variable to determine menu state
uint8_t F1 = 0; //Memory variable to determine menu state
uint8_t C1 = 0; //Memory variable to determine menu state

//Mode_options
#define openClose (uint8_t) 1
#define figures (uint8_t)   2
#define custom  (uint8_t)   3

//Figures_options
#define rock (uint8_t)       1
#define ronaldinho (uint8_t) 2
#define point (uint8_t)      3
#define thumbUp (uint8_t)    4
#define goBackF1 (uint8_t)   5

//Custom_options
#define thumb (uint8_t)    1
#define index (uint8_t)    2
#define middle (uint8_t)   3
#define ring (uint8_t)     4
#define pinky (uint8_t)    5
#define wrist (uint8_t)    6
#define goBackC1 (uint8_t) 7

/*---- 1.MODES Menu Methods / All Menu Systems ----*/
/*-- Read Joystic M1 Method --*/
void jkyM1(void){
  if (analogRead(jkyX)<=341 && analogRead(jkyY)>=1010){
    M1 = openClose;
  }
  else if (analogRead(jkyX)>=342 && analogRead(jkyX)<=682 && analogRead(jkyY)>=990){
    M1 = figures;
  }
  else if (analogRead(jkyX)>=683 && analogRead(jkyX)<=1023 && analogRead(jkyY)>=980){
    M1 = custom;
  } 
}

/*---- Modes Screen Methods ----*/
void M1_openClose(void){  
  u8g2.clearBuffer();
  u8g2.setDrawColor(2);
  
  u8g2.drawStr(32, 45, "OPEN/CLOSE");
  
  u8g2.drawBox(8,0,31,31);   //Selected box
  u8g2.drawStr(21,9, "1");   //Selected string
  
  u8g2.drawFrame(47,0,31,31);
  u8g2.drawStr(60,9, "2");
  
  u8g2.drawFrame(86,0,31,31);
  u8g2.drawStr(99,9, "3");
  
  u8g2.sendBuffer();
}
void M1_openClose_in(){
  emg(closeHand); 
  u8g2.clearBuffer();
  u8g2.setDrawColor(2);
  
  u8g2.drawStr(32, 16, "Squeeze to");
  u8g2.drawStr(32, 32, "CLOSE HAND");
  
  u8g2.sendBuffer();
}
void M1_figures(void){  
  u8g2.clearBuffer();
  u8g2.setDrawColor(2);
  
  u8g2.drawStr(42, 45, "FIGURES");
  
  u8g2.drawFrame(8,0,31,31);   
  u8g2.drawStr(21,9, "1");
  
  u8g2.drawBox(47,0,31,31);   //Selected box
  u8g2.drawStr(60,9, "2");    //Selected string
  
  u8g2.drawFrame(86,0,31,31);
  u8g2.drawStr(99,9, "3");
  
  u8g2.sendBuffer();
}
void M1_custom(void){  
  u8g2.clearBuffer();
  u8g2.setDrawColor(2);
  
  u8g2.drawStr(19, 45, "CUSTOM MOVEMENT");
  
  u8g2.drawFrame(8,0,31,31);   
  u8g2.drawStr(21,9, "1");
  
  u8g2.drawFrame(47,0,31,31);   
  u8g2.drawStr(60,9, "2");
  
  u8g2.drawBox(86,0,31,31);   //Selected box
  u8g2.drawStr(99,9, "3");    //Selected string
  
  u8g2.sendBuffer();
}

//MAIN MENU SYSTEM(MODES) METHOD
void modes_M1(){  
  switch (M1){
    case openClose:
      if(swbtn_state==1){
        M1_openClose_in();
        btn_Jky(0);
      }
      else{
        jkyM1();
        openHand();
        M1_openClose();
        btn_Jky(1);
      }
      break;

    case figures:
      if(swbtn_state==2 || swbtn_state==3){
        figures_F1();
      }
      else{
        jkyM1();
        openHand();
        M1_figures();
        btn_Jky(2);
      }
      break;

    case custom:
      if(swbtn_state==4 || swbtn_state==5){
        custom_C1();
      }
      else{
        jkyM1();
        openHand();
        M1_custom();
        btn_Jky(4);
      }
      break;
  }
}

/*---- 2.FIGURES Menu Methods ----*/
/*-- Read Joystic F1 Method --*/
void jkyF1(void){
  if (analogRead(jkyX)<=150 && analogRead(jkyY)>=1022){
    F1 = rock;
  }
  else if (analogRead(jkyX)>=151 && analogRead(jkyX)<=540 && analogRead(jkyY)>=1022){
    F1 = ronaldinho;
  }
  else if (analogRead(jkyX)>=541 && analogRead(jkyX)<=767 && analogRead(jkyY)>=1022){
    F1 = point;
  }
  else if (analogRead(jkyX)>=768 && analogRead(jkyX)<=1023 && analogRead(jkyY)>=1022){
    F1 = thumbUp;
  }
  else if (analogRead(jkyX)>=400 && analogRead(jkyX)<=1023 && analogRead(jkyY)<=400){
    F1 = goBackF1;
  } 
}

/*---- Figures Screen Methods ----*/
void F1_rock(void){  
  u8g2.clearBuffer();
  u8g2.setDrawColor(2);
  
  u8g2.drawStr(32, 32, "ROCK'N ROLL");
  
  u8g2.drawBox(11,0,17,17);   //Selected box
  u8g2.drawStr(17,2, "1");    //Selected string 
  
  u8g2.drawFrame(39,0,17,17);
  u8g2.drawStr(45,2, "2");
  
  u8g2.drawFrame(67,0,17,17);
  u8g2.drawStr(73,2, "3");
  
  u8g2.drawFrame(95,0,17,17);
  u8g2.drawStr(101,2, "4");

  u8g2.drawFrame(115,51,12,10);
  u8g2.drawXBMP(117, 53, 8, 6, back);
  
  u8g2.sendBuffer();

}
void F1_rock_in(void){
  emg(rock_servo);
  btn_Jky(2);
  u8g2.clearBuffer();
  
  u8g2.drawStr(32, 16, "Squeeze to");
  u8g2.drawStr(32, 32, "ROCK'N ROLL");
  
  u8g2.sendBuffer();
}
void F1_ronaldinho(void){  
  u8g2.clearBuffer();
  u8g2.setDrawColor(2);
  
  u8g2.drawStr(34, 32, "RONALDINHO");
  
  u8g2.drawFrame(11,0,17,17);
  u8g2.drawStr(17,2, "1");
  
  u8g2.drawBox(39,0,17,17);   //Selected box
  u8g2.drawStr(45,2, "2");    //Selected string
  
  u8g2.drawFrame(67,0,17,17);
  u8g2.drawStr(73,2, "3");
  
  u8g2.drawFrame(95,0,17,17);
  u8g2.drawStr(101,2, "4");

  u8g2.drawFrame(115,51,12,10);
  u8g2.drawXBMP(117, 53, 8, 6, back);
  
  u8g2.sendBuffer();
}
void F1_ronaldinho_in(void){
  emg(ronaldinho_servo);
  btn_Jky(2);
  u8g2.clearBuffer();
  
  u8g2.drawStr(32, 32, "RONALDINHO!");
  
  u8g2.sendBuffer();
}
void F1_point(void){  
  u8g2.clearBuffer();
  u8g2.setDrawColor(2);
  
  u8g2.drawStr(49, 32, "POINT");
  
  u8g2.drawFrame(11,0,17,17);
  u8g2.drawStr(17,2, "1");
  
  u8g2.drawFrame(39,0,17,17);     
  u8g2.drawStr(45,2, "2");
  
  u8g2.drawBox(67,0,17,17);   //Selected box
  u8g2.drawStr(73,2, "3");    //Selected string
  
  u8g2.drawFrame(95,0,17,17);
  u8g2.drawStr(101,2, "4");

  u8g2.drawFrame(115,51,12,10);
  u8g2.drawXBMP(117, 53, 8, 6, back);
  
  u8g2.sendBuffer();
}
void F1_point_in(void){
  emg(point_servo);
  btn_Jky(2);
  u8g2.clearBuffer();
  
  u8g2.drawStr(32, 16, "Squeeze to");
  u8g2.drawStr(49, 32, "POINT");
  
  u8g2.sendBuffer();
}
void F1_thumbUp(){  
  u8g2.clearBuffer();
  u8g2.setDrawColor(2);
  
  u8g2.drawStr(39, 32, "THUMBS UP");
  
  u8g2.drawFrame(11,0,17,17);
  u8g2.drawStr(17,2, "1");
  
  u8g2.drawFrame(39,0,17,17);     
  u8g2.drawStr(45,2, "2");
  
  u8g2.drawFrame(67,0,17,17);     
  u8g2.drawStr(73,2, "3");
  
  u8g2.drawBox(95,0,17,17);     //Selected box
  u8g2.drawStr(101,2, "4");     //Selected string
  
  u8g2.drawFrame(115,51,12,10);
  u8g2.drawXBMP(117, 53, 8, 6, back);
  
  u8g2.sendBuffer();
}
void F1_thumbUp_in(void){
  emg(thumbsUp_servo);
  btn_Jky(2);
  u8g2.clearBuffer();
  
  u8g2.drawStr(20, 16, "Squeeze to give");
  u8g2.drawStr(32, 30, "a THUMBS UP");
  
  u8g2.sendBuffer();
}
void F1_goBack(void){
  btn_Jky(0);  
  u8g2.clearBuffer();
  u8g2.setDrawColor(2);
  
  u8g2.drawStr(42, 32, "GO BACK");
  
  u8g2.drawFrame(11,0,17,17);
  u8g2.drawStr(17,2, "1");
  
  u8g2.drawFrame(39,0,17,17);     
  u8g2.drawStr(45,2, "2");
  
  u8g2.drawFrame(67,0,17,17);     
  u8g2.drawStr(73,2, "3");
  
  u8g2.drawFrame(95,0,17,17);
  u8g2.drawStr(101,2, "4");    

  u8g2.drawBox(115,51,12,10);   //Selected box
  
  u8g2.setDrawColor(0);
  u8g2.drawXBMP(117, 53, 8, 6, back);
  
  u8g2.sendBuffer();
}

//MAIN FIGURES METHOD
void figures_F1(){
  switch (F1){
    case rock:
      if(swbtn_state==3){ //s'ha de canviar!!
        F1_rock_in();
      }
      else{
        btn_Jky(3);
        jkyF1();
        F1_rock();  //print on display F1_rock
      }
      break;
    
    case ronaldinho: 
      if(swbtn_state==3){ //s'ha de canviar!!
        F1_ronaldinho_in(); 
      }
      else{
        btn_Jky(3);
        jkyF1();
        F1_ronaldinho(); //print on display F1_ronaldinho
      }
      break;
    
    case point:
      if(swbtn_state==3){ //s'ha de canviar!!
        F1_point_in(); 
      }
      else{
        btn_Jky(3);
        jkyF1();
        F1_point(); //print on display F1_ronaldinho
      }
      break;

     case thumbUp:
      if(swbtn_state==3){ //s'ha de canviar!!
        F1_thumbUp_in(); 
      }
      else{
        btn_Jky(3);
        jkyF1();
        F1_thumbUp(); //print on display F1_ronaldinho
      }
      break;

     case goBackF1:
        jkyF1();
        F1_goBack(); //print on display F1_ronaldinho
      break;
  }
}

/*---- 3.CUSTOM Menu Methods ----*/
/*-- Read Joystic C1 Method --*/
void jkyC1(void){
  if (analogRead(jkyX)<=170 && analogRead(jkyY)>=1023){
    C1 = thumb;
  }
  else if (analogRead(jkyX)>=171 && analogRead(jkyX)<=341 && analogRead(jkyY)>=1023){
    C1 = index;
  }
  else if (analogRead(jkyX)>=342 && analogRead(jkyX)<=511 && analogRead(jkyY)>=1023){
    C1 = middle;
  }
  else if (analogRead(jkyX)>=512 && analogRead(jkyX)<=682 && analogRead(jkyY)>=1023){
    C1 = ring;
  }
  else if (analogRead(jkyX)>=683 && analogRead(jkyX)<=853 && analogRead(jkyY)>=1023){
    C1 = pinky;
  }
  else if (analogRead(jkyX)>=854 && analogRead(jkyX)<=1023 && analogRead(jkyY)>=1023){
    C1 = wrist;
  }
  else if (analogRead(jkyX)>=512 && analogRead(jkyX)<=1023 && analogRead(jkyY)<=450){
    C1 = goBackC1;
  }
}
/*-- Movement State for Individual Fingers Method --*/
uint8_t movement=0;
void jky_servo_movement(void){
    if(analogRead(jkyY)>=600){
        movement=1;
    }
    else if(analogRead(jkyY)<=400){
        movement=2;
    }
    else if(analogRead(jkyY)>=401 && analogRead(jkyY)<=599){
        movement=0;
    }
}

/*---- Custom Screen Methods ----*/
void C1_thumb(void){  
  u8g2.clearBuffer();
  u8g2.setDrawColor(2);
  
  u8g2.drawStr(49, 32, "THUMB");
  
  u8g2.drawBox(2,0,17,17);   //Selected box
  u8g2.drawStr(8,2, "1");    //Selected string
  
  u8g2.drawFrame(23,0,17,17);
  u8g2.drawStr(29,2, "2");
  
  u8g2.drawFrame(44,0,17,17);
  u8g2.drawStr(50,2, "3");
  
  u8g2.drawFrame(65,0,17,17);
  u8g2.drawStr(71,2, "4");

  u8g2.drawFrame(86,0,17,17);
  u8g2.drawStr(92,2, "5");

  u8g2.drawFrame(107,0,17,17);
  u8g2.drawStr(113,2, "6");

  u8g2.drawFrame(115,51,12,10);
  u8g2.drawXBMP(117, 53, 8, 6, back);
  
  u8g2.sendBuffer();
}

#define thumbMin 13
#define thumbMax 170
uint8_t thumb_angle=13;
uint8_t thumb_percentage=0;

void C1_thumb_in(void){
    jky_servo_movement();
    btn_Jky(4);
    if(movement==1 && thumb_angle<thumbMax){
        thumb_angle++;
    }
    else if(movement==2 && thumb_angle>thumbMin){
        thumb_angle--;
    }
    setServo(0,thumb_angle);
    thumb_percentage=map(thumb_angle, thumbMin, thumbMax, 0, 100);
    String percentage = String(thumb_percentage);
  
    u8g2.clearBuffer();
    u8g2.setDrawColor(2);
  
    u8g2.drawStr(16, 0, "Adjust Position");

    u8g2.drawStr(12,24, "Thumb:");
    u8g2.drawStr(64,24, percentage.c_str());   //map variable for %
    u8g2.drawStr(82,24, "%");
    
    u8g2.drawFrame(12,40,102,17);
    u8g2.drawBox(13,41,thumb_percentage,15);   //x is percentage of map
    
    u8g2.sendBuffer();
  
}
void C1_index(void){  
  u8g2.clearBuffer();
  u8g2.setDrawColor(2);
  
  u8g2.drawStr(49, 32, "INDEX");
  
  u8g2.drawFrame(2,0,17,17);   
  u8g2.drawStr(8,2, "1");
  
  u8g2.drawBox(23,0,17,17);   //Selected box
  u8g2.drawStr(29,2, "2");     //Selected string
  
  u8g2.drawFrame(44,0,17,17);
  u8g2.drawStr(50,2, "3");
  
  u8g2.drawFrame(65,0,17,17);
  u8g2.drawStr(71,2, "4");

  u8g2.drawFrame(86,0,17,17);
  u8g2.drawStr(92,2, "5");

  u8g2.drawFrame(107,0,17,17);
  u8g2.drawStr(113,2, "6");

  u8g2.drawFrame(115,51,12,10);
  u8g2.drawXBMP(117, 53, 8, 6, back);

  u8g2.sendBuffer();
}

#define indexMin 10
#define indexMax 170
uint8_t index_angle=10;
uint8_t index_percentage=0;

void C1_index_in(){
  jky_servo_movement();
  btn_Jky(4);
  if(movement==1 && index_angle<indexMax){
      index_angle++;
  }
  else if(movement==2 && index_angle>indexMin){
      index_angle--;
  }
  setServo(1,index_angle);
  index_percentage=map(index_angle, indexMin, indexMax, 0, 100);
  String percentage = String(index_percentage);
  
  u8g2.clearBuffer();
  u8g2.setDrawColor(2);
  
  u8g2.drawStr(16, 0, "Adjust Position");

  u8g2.drawStr(12,24, "Index:");
  u8g2.drawStr(64,24, percentage.c_str());   //map variable for %
  u8g2.drawStr(82,24, "%");
    
  u8g2.drawFrame(12,40,102,17);
  u8g2.drawBox(13,41,index_percentage,15);   //x is percentage of map
    
  u8g2.sendBuffer();
}
void C1_middle(void){  
  u8g2.clearBuffer();
  u8g2.setDrawColor(2);
  
  u8g2.drawStr(47, 32, "MIDDLE");
  
  u8g2.drawFrame(2,0,17,17);   
  u8g2.drawStr(8,2, "1");
  
  u8g2.drawFrame(23,0,17,17);   
  u8g2.drawStr(29,2, "2");
  
  u8g2.drawBox(44,0,17,17);   //Selected box
  u8g2.drawStr(50,2, "3");    //Selected string
  
  u8g2.drawFrame(65,0,17,17);
  u8g2.drawStr(71,2, "4");

  u8g2.drawFrame(86,0,17,17);
  u8g2.drawStr(92,2, "5");

  u8g2.drawFrame(107,0,17,17);
  u8g2.drawStr(113,2, "6");

  u8g2.drawFrame(115,51,12,10);
  u8g2.drawXBMP(117, 53, 8, 6, back);
  
  u8g2.sendBuffer();
}

#define middleMin 13
#define middleMax 175
uint8_t middle_angle=13;
uint8_t middle_percentage=0;

void C1_middle_in(void){
  jky_servo_movement();
  btn_Jky(4);
  if(movement==1 && middle_angle<middleMax){
      middle_angle++;
  }
  else if(movement==2 && middle_angle>middleMin){
      middle_angle--;
  }
  setServo(2,middle_angle);
  middle_percentage=map(middle_angle, middleMin, middleMax, 0, 100);
  String percentage = String(middle_percentage);
  
  u8g2.clearBuffer();
  u8g2.setDrawColor(2);
  
  u8g2.drawStr(16, 0, "Adjust Position");

  u8g2.drawStr(12,24, "Middle:");
  u8g2.drawStr(64,24, percentage.c_str());   //map variable for %
  u8g2.drawStr(82,24, "%");
    
  u8g2.drawFrame(12,40,102,17);
  u8g2.drawBox(13,41,middle_percentage,15);   //x is percentage of map
    
  u8g2.sendBuffer();
}
void C1_ring(void){  
  u8g2.clearBuffer();
  u8g2.setDrawColor(2);
  
  u8g2.drawStr(52, 32, "RING");
  
  u8g2.drawFrame(2,0,17,17);   
  u8g2.drawStr(8,2, "1");
  
  u8g2.drawFrame(23,0,17,17);   
  u8g2.drawStr(29,2, "2");
  
  u8g2.drawFrame(44,0,17,17);
  u8g2.drawStr(50,2, "3");
  
  u8g2.drawBox(65,0,17,17);   //Selected box
  u8g2.drawStr(71,2, "4");    //Selected string
  
  u8g2.drawFrame(86,0,17,17);
  u8g2.drawStr(92,2, "5");

  u8g2.drawFrame(107,0,17,17);
  u8g2.drawStr(113,2, "6");

  u8g2.drawFrame(115,51,12,10);
  u8g2.drawXBMP(117, 53, 8, 6, back);
  
  u8g2.sendBuffer();
}

#define ringMin 13
#define ringMax 151
uint8_t ring_angle=13;
uint8_t ring_percentage=0;

void C1_ring_in(void){
  jky_servo_movement();
  btn_Jky(4);
  if(movement==1 && ring_angle<ringMax){
      ring_angle++;
  }
  else if(movement==2 && ring_angle>ringMin){
      ring_angle--;
  }
  setServo(3,ring_angle);
  ring_percentage=map(ring_angle, ringMin, ringMax, 0, 100);
  String percentage = String(ring_percentage);
  
  u8g2.clearBuffer();
  u8g2.setDrawColor(2);
  
  u8g2.drawStr(16, 0, "Adjust Position");

  u8g2.drawStr(12,24, "Ring:");
  u8g2.drawStr(64,24, percentage.c_str());   //map variable for %
  u8g2.drawStr(82,24, "%");
    
  u8g2.drawFrame(12,40,102,17);
  u8g2.drawBox(13,41,ring_percentage,15);   //x is percentage of map
    
  u8g2.sendBuffer();
}
void C1_pinky(void){  
  u8g2.clearBuffer();
  u8g2.setDrawColor(2);
  
  u8g2.drawStr(49, 32, "PINKY");
  
  u8g2.drawFrame(2,0,17,17);   
  u8g2.drawStr(8,2, "1");
  
  u8g2.drawFrame(23,0,17,17);   
  u8g2.drawStr(29,2, "2");
  
  u8g2.drawFrame(44,0,17,17);   
  u8g2.drawStr(50,2, "3");
  
  u8g2.drawFrame(65,0,17,17);
  u8g2.drawStr(71,2, "4");

  u8g2.drawBox(86,0,17,17);   //Selected box
  u8g2.drawStr(92,2, "5");    //Selected string

  u8g2.drawFrame(107,0,17,17);
  u8g2.drawStr(113,2, "6");

  u8g2.drawFrame(115,51,12,10);
  u8g2.drawXBMP(117, 53, 8, 6, back);
  
  u8g2.sendBuffer();
}

#define pinkyMin 13
#define pinkyMax 161
uint8_t pinky_angle=13;
uint8_t pinky_percentage=0;

void C1_pinky_in(void){
  jky_servo_movement();
  btn_Jky(4);
  if(movement==1 && pinky_angle<pinkyMax){
      pinky_angle++;
  }
  else if(movement==2 && pinky_angle>pinkyMin){
      pinky_angle--;
  }
  setServo(4,pinky_angle);
  pinky_percentage=map(pinky_angle, pinkyMin, pinkyMax, 0, 100);
  String percentage = String(pinky_percentage);
  
  u8g2.clearBuffer();
  u8g2.setDrawColor(2);
  
  u8g2.drawStr(16, 0, "Adjust Position");

  u8g2.drawStr(12,24, "Pinky:");
  u8g2.drawStr(64,24, percentage.c_str());   //map variable for %
  u8g2.drawStr(82,24, "%");
    
  u8g2.drawFrame(12,40,102,17);
  u8g2.drawBox(13,41,middle_percentage,15);   //x is percentage of map
    
  u8g2.sendBuffer();
}
void C1_wrist(void){  
  u8g2.clearBuffer();
  u8g2.setDrawColor(2);
  
  u8g2.drawStr(49, 32, "WRIST");
  
  u8g2.drawFrame(2,0,17,17);   
  u8g2.drawStr(8,2, "1");
  
  u8g2.drawFrame(23,0,17,17);   
  u8g2.drawStr(29,2, "2");
  
  u8g2.drawFrame(44,0,17,17);   
  u8g2.drawStr(50,2, "3");
  
  u8g2.drawFrame(65,0,17,17);
  u8g2.drawStr(71,2, "4");

  u8g2.drawFrame(86,0,17,17);
  u8g2.drawStr(92,2, "5");

  u8g2.drawBox(107,0,17,17);    //Selected box
  u8g2.drawStr(113,2, "6");     //Selected string

  u8g2.drawFrame(115,51,12,10);
  u8g2.drawXBMP(117, 53, 8, 6, back);
  
  u8g2.sendBuffer();
}

#define wristMin 180
#define wristMax 150
uint8_t wrist_angle=180;
uint8_t wrist_percentage=0;

void C1_wrist_in(void){
  jky_servo_movement();
  btn_Jky(4);
  if(movement==1 && wrist_angle>wristMax){
      wrist_angle--;
  }
  else if(movement==2 && wrist_angle<wristMin){
      wrist_angle++;
  }
  setServo(5,wrist_angle);
  wrist_percentage=map(wrist_angle, wristMin, wristMax, 0, 100);
  String percentage = String(wrist_percentage);
  
  u8g2.clearBuffer();
  u8g2.setDrawColor(2);
  
  u8g2.drawStr(16, 0, "Adjust Position");

  u8g2.drawStr(12,24, "Wrist:");
  u8g2.drawStr(64,24, percentage.c_str());   //map variable for %
  u8g2.drawStr(82,24, "%");
    
  u8g2.drawFrame(12,40,102,17);
  u8g2.drawBox(13,41,wrist_percentage,15);   //x is percentage of map
    
  u8g2.sendBuffer();
}
void C1_goBack(void){  
  u8g2.clearBuffer();
  u8g2.setDrawColor(2);
  
  u8g2.drawStr(43, 32, "GO BACK");
  
  u8g2.drawFrame(2,0,17,17);   
  u8g2.drawStr(8,2, "1");
  
  u8g2.drawFrame(23,0,17,17);   
  u8g2.drawStr(29,2, "2");
  
  u8g2.drawFrame(44,0,17,17);   
  u8g2.drawStr(50,2, "3");
  
  u8g2.drawFrame(65,0,17,17);
  u8g2.drawStr(71,2, "4");

  u8g2.drawFrame(86,0,17,17);
  u8g2.drawStr(92,2, "5");

  u8g2.drawFrame(107,0,17,17);
  u8g2.drawStr(113,2, "6");
  
  u8g2.drawBox(115,51,12,10);   //Selected box
  
  u8g2.setDrawColor(0);
  u8g2.drawXBMP(117, 53, 8, 6, back);
  u8g2.sendBuffer();
}

//MAIN CUSTOM METHOD
void custom_C1(void){
  switch(C1){
    case thumb:
      if(swbtn_state==5){
        jky_servo_movement();
        C1_thumb_in();
      }
      else{
        btn_Jky(5);
        jkyC1();
        C1_thumb();  //print on display F1_rock
      }
      break;
    
    case index:
      if(swbtn_state==5){ //s'ha de canviar!!
        C1_index_in();
      }
      else{
        btn_Jky(5);
        jkyC1();
        C1_index();  //print on display F1_rock
      }
      break;
    
    case middle:
      if(swbtn_state==5){ //s'ha de canviar!!
        C1_middle_in();
      }
      else{
        btn_Jky(5);
        jkyC1();
        C1_middle();  //print on display F1_rock
      }
      break;

    case ring:
      if(swbtn_state==5){ //s'ha de canviar!!
        C1_ring_in();
      }
      else{
        btn_Jky(5);
        jkyC1();
        C1_ring();  //print on display F1_rock
      }
      break;
    
    case pinky:
      if(swbtn_state==5){ //s'ha de canviar!!
        C1_pinky_in();
      }
      else{
        btn_Jky(5);
        jkyC1();
        C1_pinky();  //print on display F1_rock
      }
      break;

    case wrist:
      if(swbtn_state==5){ //s'ha de canviar!!
        C1_wrist_in();
      }
      else{
        btn_Jky(5);
        jkyC1();
        C1_wrist();  //print on display F1_rock
      }
      break;

    case goBackC1:
        btn_Jky(0);
        jkyC1();
        C1_goBack();  //print on display F1_rock
      break;
  }
}

void setup(){
  u8g2.begin();
  u8g2_prepare();
  servo.begin();
  servo.setPWMFreq(Freq);
  pinMode(jky, INPUT_PULLUP);
  F1=rock;
  C1=thumb;
  M1=openClose;
  swbtn_state=0;
}

void loop(){ 
  modes_M1();
}

#include<iostream>
using namespace std;

int sum(int arr[], int a);

int main() {
    int arr[1000], n;
    cin >> n;
    for (int i = 0; i < n; ++i) {
        cin >> arr[i];
        cout << sum(arr, n);
    }
}
int sum(int arr[], int a) {
    int i;
    sum = 0;
    for (i=0; i<n; ++i) {
        sum += arr[i];
    }
    return sum;
}#include<iostream>
using namespace std;

int sum(int arr[], int a);

int main() {
    int arr[1000], n;
    cin >> n;
    for (int i = 0; i < n; ++i) {
        cin >> arr[i];
        cout << sum(arr, n);
    }
}
int sum(int arr[], int a) {
    int i;
    sum = 0;
    for (i=0; i<n; ++i) {
        sum += arr[i];
    }
    return sum;
}

(Display calendars) Write a program that prompts the user to enter the year and first day of the year and displays the calendar table for the year on the console. For example, if the user entered the year 2013 and 2 for Tuesday, January 1, 2013, your program should display the calendar for each month in the year, as follows:

#include <iostream>
#include<cmath>
#include<ctime>
#include<string>
#include <iomanip>
#include <fstream>

using namespace std;

int main()
{
	cout << "enter the year ";
	int year;
	cin >> year;
	
	cout << "Enter The First Day Of The year ";
	int FirstDay;
	cin >> FirstDay;
	int count = 1;
	int days = 1;
	for (int month = 1; month <= 12; month++)
	{
		cout << "             ";
		switch (month)
		{
		case 1: cout << "January " << year<<endl;
			break;
		case 2: cout << "February " << year << endl;
			break;
		case 3: cout << "March  " << year << endl;
			break;
		case 4: cout << "April  " << year << endl;
			break;
		case 5: cout << "May " << year << endl;
			break;
		case 6: cout << "June  " << year << endl;
			break;
		case 7: cout << "July  " << year << endl;
			break;
		case 8: cout << "August " << year << endl;
			break;
		case 9: cout << "September " << year << endl;
			break;
		case 10: cout << "October " << year << endl;
			break;
		case 11: cout << "November " << year << endl;
			break;
		case 12: cout << "December " << year << endl;
			break;
		}
		cout << " --------------------------------------------------------- "<<endl;
		cout << "  Sun Mon Tue Wed Thu Fri Sat"<<endl;
		for (int i = 0; i < FirstDay; i++)
		{
			cout << "    ";
		}
		for (int i = 1; i < 31; i++)
		{
			if (i < 10) {
				cout<<"   " <<i;
			}
			else {
				cout<<"  " << i;
			}
			if ((i + FirstDay) % 7 == 0) {
				cout << endl;
			}
		}
		cout << endl;

		FirstDay = (FirstDay + 31) % 7;
		
	}
	
	
}

(Display the Sundays in a month) Write a program that prompts the user to enter the month and first day of the month, and displays all the Sundays in that month. For example, if the user entered the month 7 for July, and the first day 4 for Wednesday, your program should display the following output: The first day of this month is Wednesday! ... Next Sunday of this month is on 26

#include <iostream>
#include<cmath>
#include<ctime>
#include<string>
#include <iomanip>
#include <fstream>

using namespace std;

int main()
{
	cout << "enter the month ";
	int month;
	cin >> month;
	cout << "Enter The First Day Of The Month ";
	int firstDay;
	cin >> firstDay;
	int nextSunday = 1;
	
		switch (firstDay)
		{
			
		case 1: nextSunday += 7;
			cout << "The first day of this month is sunday "<<endl;
			while (nextSunday < 30)
			{
					cout << "Next Sunday of this month is on " << nextSunday << endl;
									nextSunday += 7 ;
			}
			break;

		case 2: nextSunday += 6;
			cout << "The first day of this month is monday " << endl;
			while (nextSunday < 30)
			{
				cout << "Next Sunday of this month is on " << nextSunday << endl;
				nextSunday += 7;
			}
			break;
		case 3: nextSunday += 5;
			cout << "The first day of this month is tuesday " << endl;
			while (nextSunday < 30)
			{
				cout << "Next Sunday of this month is on " << nextSunday << endl;
				nextSunday += 7;
			}
			break;
		case 4: nextSunday += 4;
			cout << "The first day of this month is wednesday " << endl;
			while (nextSunday < 30)
			{
				cout << "Next Sunday of this month is on " << nextSunday << endl;
				nextSunday += 7;
			}
			break;
		case 5: nextSunday += 3;
			cout << "The first dayof this month is thursday " << endl;
			while (nextSunday < 30)
			{
				cout << "Next Sunday of this month is on " << nextSunday << endl;
				nextSunday += 7;
			}
			break;
		case 6: nextSunday += 2;
			cout << "The first day of this month is friday " << endl;
			while (nextSunday < 30)
			{
				cout << "Next Sunday of this month is on " << nextSunday << endl;
				nextSunday += 7;
			}
			break;
		case 7: nextSunday += 1;
			cout << "The first day of this month is saturday " << endl;
			while (nextSunday < 30)
			{
				cout << "Next Sunday of this month is on " << nextSunday << endl;
				nextSunday += 7;
			}
			break;

		}
		
}

#include <iostream>
#include <cmath>
#include <cstdlib>
using namespace std;

int main() {
    double w, x, y, b, c, d, expo, sr, absolute_double, ceiling, fl;
    int a, z, absolute;
    long abs_long;
    
    cout.setf(ios::fixed);
    cout.setf(ios::showpoint);
    cout.precision(1);
    
    cout << "Enter the values of the following : \n"
        << "-------------------------------\n"
        << "pow(x, y)\n"
        << "x: ";
    cin >> x;
    cout << "y: ";
    cin >> y;
    cout << "sqrt(w)\n"
        << "w: ";
    cin >> w;
    cout << "abs(z)\n"
        << "z: ";
    cin >> z;
    cout << "labs(a)\n"
        << "a: ";
    cin >> a;
    cout << "fabs(b)\n"
        << "b: ";
    cin >> b;
    cout << "ceil(c)\n"
        << "c: ";
    cin >> c;
    cout << "floor(d)\n"
        << "d: ";
    cin >> d;
    
    expo = pow(x, y);
    cout << "___________________________\n"
    << "pow(x, y) = pow(" << x << ", " 
    << y << ") "<< " = " << expo << endl;
    
    sr = sqrt(w);
    cout << "sqrt(w) = sqrt(" << w
    << ") "<< " = " << sr << endl;
    
    absolute = abs(z);
    cout << "abs(z) = abs(" << z
    << ") "<< " = " << absolute << endl;
    
    abs_long = labs(a);
    cout << "labs(a) = labs(" << a
    << ") "<< " = " << abs_long << endl;
    
    absolute_double = fabs(b);
    cout << "fabs(b) = fabs(" << b
    << ") "<< " = " << absolute_double << endl;
    
    ceiling = ceil(c);
    cout << "ceil(c) = ceil(" << c
    << ") "<< " = " << ceiling << endl;
    
    fl = floor(d);
    cout << "floor(d) = floor(" << d
    << ") "<< " = " << fl << endl;
    
    return 0;
}

Average of two arguements

#include <iostream>
using namespace std;

double var(int x, double y) {
    return ((x + y)/2);
}

int main()
{
    double y, ave;
    int x;
    
    cout << "Average of two arguements\n"
        << "----------------------------\n"
        << "Please enter arguement x: ";
    cin >> x;
    cout << "Please enter arguement y: ";
    cin >> y;
    
    ave = var(x, y);
    
    cout.setf(ios::fixed);
    cout.setf(ios::showpoint);
    cout.precision(1);
    cout << "____________________________\n"
        << "The average of these two numbers are "
        << ave << endl;
    
    return 0;
}

#include<iostream>
using namespace std;

class Element
{
public:
	int row;
	int col;
	int data;

};

class List
{
public:
	int row;
	int col;
	int data;
	List*next;
};



class  Sparse
{

public:
	int countElements;
	Element * elementArr = new Element[10000];
	Sparse()
	{
		countElements = 0;
	}


	void insert(int row	, int col, int data)
	{
		Element newElem;
		newElem.row = row;
		newElem.col = col;
		newElem.data = data;
		elementArr[countElements] = newElem;
		elementArr[0].data = countElements;
		countElements++;
	}

	// void add()


};

void display(Sparse* sp)
{
	for (int i = 0; i <= sp->elementArr[0].data  ; ++i)
	{
		cout << sp->elementArr[i].row << " " << sp->elementArr[i].col << "  " << sp->elementArr[i].data;
		cout  << endl;

	}

}

void add ( Sparse *s1 , Sparse *s2 , Sparse *s3)
{
	s3->elementArr[0].row = s1->elementArr[0].row;
	s3->elementArr[0].col = s1->elementArr[0].col;

	int i = 1; //points to sp1
	int j = 1; //points to sp2
	int k = 1; //points to sp3
	while (i <= s1->elementArr[0].data && j <= s2->elementArr[0].data )
	{
		if (s1->elementArr[i].row < s2->elementArr[j].row)
		{
			s3->elementArr[i].row = s1->elementArr[j].row;
			s3->elementArr[i].col = s1->elementArr[j].col;
			s3->elementArr[k++] = s1->elementArr[i++];
			s3->elementArr[0].data ++;
			s3->countElements++;
		}
		else if (s1->elementArr[i].row > s2->elementArr[j].row)
		{
			s3->elementArr[k].row = s2->elementArr[j].row;
			s3->elementArr[k].col = s2->elementArr[j].col;
			s3->elementArr[k++] = s2->elementArr[j++];
			s3->elementArr[0].data ++;
			s3->countElements++;
		}
		else if (s1->elementArr[i].row == s2->elementArr[j].row)
		{
			if (s1->elementArr[i].col < s2->elementArr[j].col)
			{
				s3->elementArr[k].row = s1->elementArr[j].row;
				s3->elementArr[k].col = s1->elementArr[j].col;
				s3->elementArr[k++] = s1->elementArr[i++];
				s3->elementArr[0].data ++;
				s3->countElements++;
			}
			else if (s1->elementArr[i].col > s2->elementArr[j].col)
			{
				s3->elementArr[k].row = s2->elementArr[j].row;
				s3->elementArr[k].col = s2->elementArr[j].col;
				s3->elementArr[k++] = s2->elementArr[j++];
				s3->elementArr[0].data ++;
				s3->countElements++;
			}
			else if (s1->elementArr[i].col == s2->elementArr[j].col)
			{
				s3->elementArr[k].row = s2->elementArr[j].row;
				s3->elementArr[k].col = s2->elementArr[j].col;
				s3->elementArr[k++].data = s2->elementArr[j++].data + s1->elementArr[i++].data;
				s3->elementArr[0].data ++;
				s3->countElements++;
			}

		}
		cout << "hi" << endl;
		display(s3);
		cout << endl;
	}



}
// void display(Sparse* sp)
// {
// 	for (int i = 0; i <= sp->elementArr[0].data  ; ++i)
// 	{
// 		cout << sp->elementArr[i].row << " " << sp->elementArr[i].col << "  " << sp->elementArr[i].data;
// 		cout  << endl;

// 	}

// }

void transpose(Sparse *s1, Sparse*s3)
{
	//no. of elements in each col of s1
	int col_count_s1 = s1->elementArr[0].col + 1;
	int *col_s1 = new int [col_count_s1] {0};
	col_s1[0] = s1->elementArr[0].col;
	for (int i = 1; i <= s1->elementArr[0].data; ++i)
	{
		col_s1[s1->elementArr[i].col]++;
		//it will act as row element for s2
	}

	// for (int i = 0; i < col_count_s1; ++i)
	// {
	// 	cout << col_s1[i] << " ";
	// 	//it will act as row element for s2
	// }
	cout << endl;
	int *row_index = new int [col_count_s1 + 1];
	//one size greater than col_s1;
	row_index[1] = 1;
	for (int i = 2; i <= col_count_s1   ; ++i)
	{
		row_index[i] = row_index[i - 1] + col_s1[i - 1];
	}
	// for (int i = 0 ; i <= col_count_s1; ++i)
	// {
	// 	cout << row_index[i] << " ";
	// 	//it will act as row element for s2
	// }
	cout << endl;
	cout << endl;


	for (int i = 0; i <= s1->elementArr[0].data; ++i)
	{
		if (i == 0)
		{
			s3->elementArr[i].row = s1->elementArr[i].col;
			s3->elementArr[i].col = s1->elementArr[i].row;
			s3->elementArr[i].data = s1->elementArr[i].data;
		}
		else
		{
			int r_index  = s1->elementArr[i].col;
			int index = row_index[r_index];
			s3->elementArr[index].row = s1->elementArr[i].col;
			s3->elementArr[index].col = s1->elementArr[i].row;
			s3->elementArr[index].data = s1->elementArr[i].data;
			row_index[r_index]++;
		}
	}
}

void matrix(Sparse *s)
{
	int k = 1;
	for (int i = 1; i <= s->elementArr[0].row; ++i)
	{
		for (int j = 1; j <= s->elementArr[0].col; j++)
		{
			if (i == s->elementArr[k].row && j == s->elementArr[k].col)
				cout << s->elementArr[k++].data << " ";
			else
				cout << "0 ";
		}
		cout << endl;
	}
}


void multiply ( Sparse *s1 , Sparse *s2 , Sparse *s3)
{
	Sparse *s4 = new Sparse();
	display(s1); cout << endl;
	display(s2); cout << endl;
	s3->insert(s1->elementArr[0].row , s2->elementArr[0].col , 0 );
	for (int i = 1; i <= s1->elementArr[0].data; i++ )
	{

		int sum = 0;

		for (int j = 1; j <= s2->elementArr[0].data; j++)
		{
			int sum = 0;
			if (s1->elementArr[i].col == s2->elementArr[j].row)
			{
				sum = s1->elementArr[i].data * s2->elementArr[j].data;
				s3->insert(s1->elementArr[i].row , s2->elementArr[j].col , sum);
			}
		}
	}


	display(s3);


	cout << endl;
	cout << endl;
	transpose (s3, s4);//saved in new transpose matrix s4
	transpose (s4, s3);//saved in new transpose matrix s3
	//now s3 is in sorted order
	Sparse *s5 = new Sparse();
	for (int i = 0; i <= s3->elementArr[0].data; ++i)
	{
		if (i == 0)
		{
			s5->insert(s3->elementArr[i].row, s3->elementArr[i].col, 0);
		}
		else if (i == 1)
		{
			s5->insert(s3->elementArr[i].row, s3->elementArr[i].col, s3->elementArr[i].data);
		}
		else
		{
			int flag = 0;
			for (int k = 1; k <= s5->elementArr[0].data; k++)
			{
				if (s3->elementArr[i].row == s5->elementArr[k].row && s3->elementArr[i].col == s5->elementArr[k].col)
				{
					s5->elementArr[k].data += s3->elementArr[i].data;
					flag = 1;
					break;
				}
			}
			if (flag == 0)
			{
				s5->insert(s3->elementArr[i].row, s3->elementArr[i].col, s3->elementArr[i].data);

			}
		}

	}





	display(s3);
	cout << endl;
	s3 = s5;
	display(s3);
	cout << endl;
	matrix(s3);
	cout << s3->elementArr[0].row ;

}
int main()
{
#ifndef ONLINE_JUDGE
	freopen("input.txt", "r", stdin);
	freopen("output.txt", "w", stdout);
#endif


	int type;
	int op;
	int R1, R2, C1, C2;
	// do {
	cout << "What operation do you want to perform? " <<
	     " Select Option number. Enter 0 to exit." << endl;
	cout << "1. Array" << endl;
	cout << "2. Link list" << endl;
	cout << "Enter datastructure to use :\n";
	cin >> type;
	cout << "Type of operation :\n";
	cout << "1. Addition" << endl;
	cout << "2. Transpose " << endl;
	cout << "3. Multiplication  " << endl;
	cin >> op;
	int data;


	Sparse *sp1 = new Sparse();
	Sparse *sp2 = new Sparse();

	int n = 0;
	if (type == 1 )
	{
		//MATRIX 1
		cin >> R1 >> C1;
		sp1->insert(R1, C1, 0);// FOR Checking #r , #c , #elements
		for (int i = 1; i <= R1; ++i)
		{
			for (int j = 1; j <= C1; ++j)
			{
				cin >> data;
				if (data != 0)
					sp1->insert(i, j, data);
			}
		}
		if (op == 2)//transpose
		{
			Sparse*sp3 = new Sparse();
			transpose(sp1 , sp3);
			display(sp1);
			cout << endl;
			display(sp3);
			cout << endl;
			// sp1 = sp3; //after transpose just change the pointer
			matrix(sp1);
			cout << endl;
			matrix(sp3);
			cout << endl;
		}

		if (op == 1 || op == 3)//addition or mul
		{
			//MATRIX 2
			cin >> R2 >> C2;
			sp2->insert(R2, C2, 0);
			for (int i = 1; i <= R2; ++i)
				for (int j = 1; j <= C2; ++j)
				{
					cin >> data;
					if (data != 0)
						sp2->insert(i, j, data);
				}
			Sparse *sp3 = new Sparse();;
			if (op == 1) //add
			{
				if (R1 != R2 || C1 != C2)
				{
					cout << " wrong matrix sizes: \n";
					return 0;
				}
				add(sp1, sp2, sp3);
				cout << endl;
				display(sp1);
				cout << endl;
				display(sp2);
				cout << endl;
				display(sp3);
				cout << endl;
				cout << sp1->elementArr[0].data << endl;
				cout << sp2->elementArr[0].data << endl ;
				cout << sp3->elementArr[0].data << endl ;
				matrix(sp1);
				cout << endl;
				matrix(sp2);
				cout << endl;
				matrix(sp3);
				cout << endl;
			}
			else if (op == 3) //multiplication
			{
				if (C1 != R2)
				{
					cout << " wrong matrix sizes: \n";
					return 0;
				}
				multiply(sp1, sp2, sp3);
				cout << endl;
				// 	display(sp1);
				// 	cout << endl;
				// 	display(sp2);
				// 	cout << endl;
				// 	display(sp3);
				// 	cout << endl;
				// 	matrix(sp1);
				// 	cout << endl;
				// 	matrix(sp2);
				// 	cout << endl;
				// 	matrix(sp3);
				// 	cout << endl;
			}





			// for (int i = 0; i < 5 ; ++i)
			// {
			// 	cout << sp3->elementArr[i].row << " " << sp3->elementArr[i].col << "  " << sp3->elementArr[i].data;
			// 	cout  << endl;
			// }
			// cout << sp3->elementArr[0].row << " " << sp3->elementArr[0].col << "  " << sp3->elementArr[0].data;


		}
	}





// 	switch (option) {
// 	case 0:
// 		break;
// 	case 1:
// 		cout << "Enter VALUE of TREE sp to INSERT in AVL Tree: ";
// 		cin >> val;

// 		obj_avl.root = obj_avl.insert(val);
// 		cout << endl;
// 		break;

// 	case 2:
// 		cout << "Enter VALUE of TREE sp to delete in AVL Tree: ";
// 		cin >> val;
// 		obj_avl.root = obj_avl.deleteData(val);
// 		break;


// 	case 3:
// 		cout << "Enter VALUE of TREE sp to search in AVL: ";
// 		cin >> val;
// 		cout << obj_avl.search(val);
// 		break;

// 	default:
// 		cout << "Enter Proper Option number " << endl;
// 	}

// } while (option != 0);



	return 0;
}

Item no. 1, 3.3

#include <iostream>
using namespace std;

int add(int x, int y, int z) {
    return (x + y + z);
}

int main()
{
    int x, y, z, sum;
    
    cout << "Sum of three arguements\n"
        << "----------------------------\n"
        << "Please enter three arguements: ";
    cin >> x >> y >> z;
    
    sum = add(x, y,z);
 
    cout << "____________________________\n"
        << x << " + " << y << " + "
        << z << endl
        << "The sum these three arguements are: " << sum;

    return 0;
    
}

Function Definition ex.

#include <iostream>
using namespace std;

double total_cost(int number_par, double price_par) {
}

int main()
{
    double price, bill;
    int number;
    
    cout << "Enter the number of items purchased: ";
    cin >> number;
    cout << "Enter the price per item $";
    cin >> price;
    
    bill = total_cost(number, price);
    
    cout.setf(ios::fixed);
    cout.setf(ios::showpoint);
    cout.precision(2);
    cout << number << " items at "
    << "$" << price << " each.\n"
    << "Final bill, including tax, is $" << bill
    << endl;
    
    return 0;
}

#include<iostream>
using namespace std;

class Element
{
public:
	int row;
	int col;
	int data;

};



class  Sparse
{

public:
	int countElements;
	Element * elementArr = new Element[10000];
	Sparse()
	{
		countElements = 0;
	}


	void insert(int row	, int col, int data)
	{
		Element newElem;
		newElem.row = row;
		newElem.col = col;
		newElem.data = data;
		elementArr[countElements] = newElem;
		elementArr[0].data = countElements;
		countElements++;
	}

	// void add()


};

void display(Sparse* sp)
{
	for (int i = 0; i <= sp->elementArr[0].data  ; ++i)
	{
		cout << sp->elementArr[i].row << " " << sp->elementArr[i].col << "  " << sp->elementArr[i].data;
		cout  << endl;

	}

}

void add ( Sparse *s1 , Sparse *s2 , Sparse *s3)
{
	s3->elementArr[0].row = s1->elementArr[0].row;
	s3->elementArr[0].col = s1->elementArr[0].col;

	int i = 1; //points to sp1
	int j = 1; //points to sp2
	int k = 1; //points to sp3
	while (i <= s1->elementArr[0].data && j <= s2->elementArr[0].data )
	{
		if (s1->elementArr[i].row < s2->elementArr[j].row)
		{
			s3->elementArr[i].row = s1->elementArr[j].row;
			s3->elementArr[i].col = s1->elementArr[j].col;
			s3->elementArr[k++] = s1->elementArr[i++];
			s3->elementArr[0].data ++;
			s3->countElements++;
		}
		else if (s1->elementArr[i].row > s2->elementArr[j].row)
		{
			s3->elementArr[k].row = s2->elementArr[j].row;
			s3->elementArr[k].col = s2->elementArr[j].col;
			s3->elementArr[k++] = s2->elementArr[j++];
			s3->elementArr[0].data ++;
			s3->countElements++;
		}
		else if (s1->elementArr[i].row == s2->elementArr[j].row)
		{
			if (s1->elementArr[i].col < s2->elementArr[j].col)
			{
				s3->elementArr[k].row = s1->elementArr[j].row;
				s3->elementArr[k].col = s1->elementArr[j].col;
				s3->elementArr[k++] = s1->elementArr[i++];
				s3->elementArr[0].data ++;
				s3->countElements++;
			}
			else if (s1->elementArr[i].col > s2->elementArr[j].col)
			{
				s3->elementArr[k].row = s2->elementArr[j].row;
				s3->elementArr[k].col = s2->elementArr[j].col;
				s3->elementArr[k++] = s2->elementArr[j++];
				s3->elementArr[0].data ++;
				s3->countElements++;
			}
			else if (s1->elementArr[i].col == s2->elementArr[j].col)
			{
				s3->elementArr[k].row = s2->elementArr[j].row;
				s3->elementArr[k].col = s2->elementArr[j].col;
				s3->elementArr[k++].data = s2->elementArr[j++].data + s1->elementArr[i++].data;
				s3->elementArr[0].data ++;
				s3->countElements++;
			}

		}
		cout << "hi" << endl;
		display(s3);
		cout << endl;
	}



}
// void display(Sparse* sp)
// {
// 	for (int i = 0; i <= sp->elementArr[0].data  ; ++i)
// 	{
// 		cout << sp->elementArr[i].row << " " << sp->elementArr[i].col << "  " << sp->elementArr[i].data;
// 		cout  << endl;

// 	}

// }

void transpose(Sparse *s1, Sparse*s3)
{
	//no. of elements in each col of s1
	int col_count_s1 = s1->elementArr[0].col + 1;
	int *col_s1 = new int [col_count_s1] {0};
	col_s1[0] = s1->elementArr[0].col;
	for (int i = 1; i <= s1->elementArr[0].data; ++i)
	{
		col_s1[s1->elementArr[i].col]++;
		//it will act as row element for s2
	}

	// for (int i = 0; i < col_count_s1; ++i)
	// {
	// 	cout << col_s1[i] << " ";
	// 	//it will act as row element for s2
	// }
	cout << endl;
	int *row_index = new int [col_count_s1 + 1];
	//one size greater than col_s1;
	row_index[1] = 1;
	for (int i = 2; i <= col_count_s1   ; ++i)
	{
		row_index[i] = row_index[i - 1] + col_s1[i - 1];
	}
	// for (int i = 0 ; i <= col_count_s1; ++i)
	// {
	// 	cout << row_index[i] << " ";
	// 	//it will act as row element for s2
	// }
	cout << endl;
	cout << endl;


	for (int i = 0; i <= s1->elementArr[0].data; ++i)
	{
		if (i == 0)
		{
			s3->elementArr[i].row = s1->elementArr[i].col;
			s3->elementArr[i].col = s1->elementArr[i].row;
			s3->elementArr[i].data = s1->elementArr[i].data;
		}
		else
		{
			int r_index  = s1->elementArr[i].col;
			int index = row_index[r_index];
			s3->elementArr[index].row = s1->elementArr[i].col;
			s3->elementArr[index].col = s1->elementArr[i].row;
			s3->elementArr[index].data = s1->elementArr[i].data;
			row_index[r_index]++;
		}
	}
}

void matrix(Sparse *s)
{
	int k = 1;
	for (int i = 1; i <= s->elementArr[0].row; ++i)
	{
		for (int j = 1; j <= s->elementArr[0].col; j++)
		{
			if (i == s->elementArr[k].row && j == s->elementArr[k].col)
				cout << s->elementArr[k++].data << " ";
			else
				cout << "0 ";
		}
		cout << endl;
	}
}


void multiply ( Sparse *s1 , Sparse *s2 , Sparse *s3)
{
	Sparse *s4 = new Sparse();
	display(s1); cout << endl;
	display(s2); cout << endl;
	s3->insert(s1->elementArr[0].row , s2->elementArr[0].col , 0 );
	for (int i = 1; i <= s1->elementArr[0].data; i++ )
	{

		int sum = 0;

		for (int j = 1; j <= s2->elementArr[0].data; j++)
		{
			int sum = 0;
			if (s1->elementArr[i].col == s2->elementArr[j].row)
			{
				sum = s1->elementArr[i].data * s2->elementArr[j].data;
				s3->insert(s1->elementArr[i].row , s2->elementArr[j].col , sum);
			}
		}
	}


	display(s3);


	cout << endl;
	cout << endl;
	transpose (s3, s4);//saved in new transpose matrix s4
	transpose (s4, s3);//saved in new transpose matrix s3
	//now s3 is in sorted order
	Sparse *s5 = new Sparse();
	for (int i = 0; i <= s3->elementArr[0].data; ++i)
	{
		if (i == 0)
		{
			s5->insert(s3->elementArr[i].row, s3->elementArr[i].col, 0);
		}
		else if (i == 1)
		{
			s5->insert(s3->elementArr[i].row, s3->elementArr[i].col, s3->elementArr[i].data);
		}
		else
		{
			int flag = 0;
			for (int k = 1; k <= s5->elementArr[0].data; k++)
			{
				if (s3->elementArr[i].row == s5->elementArr[k].row && s3->elementArr[i].col == s5->elementArr[k].col)
				{
					s5->elementArr[k].data += s3->elementArr[i].data;
					flag = 1;
					break;
				}
			}
			if (flag == 0)
			{
				s5->insert(s3->elementArr[i].row, s3->elementArr[i].col, s3->elementArr[i].data);

			}
		}

	}





	display(s3);
	cout << endl;
	s3 = s5;
	display(s3);
	cout << endl;
	matrix(s3);
	cout << s3->elementArr[0].row ;

}
int main()
{
#ifndef ONLINE_JUDGE
	freopen("input.txt", "r", stdin);
	freopen("output.txt", "w", stdout);
#endif


	int type;
	int op;
	int R1, R2, C1, C2;
	// do {
	cout << "What operation do you want to perform? " <<
	     " Select Option number. Enter 0 to exit." << endl;
	cout << "1. Array" << endl;
	cout << "2. Link list" << endl;
	cout << "Enter datastructure to use :\n";
	cin >> type;
	cout << "Type of operation :\n";
	cout << "1. Addition" << endl;
	cout << "2. Transpose " << endl;
	cout << "3. Multiplication  " << endl;
	cin >> op;
	int data;


	Sparse *sp1 = new Sparse();
	Sparse *sp2 = new Sparse();

	int n = 0;
	if (type == 1 )
	{
		//MATRIX 1
		cin >> R1 >> C1;
		sp1->insert(R1, C1, 0);// FOR Checking #r , #c , #elements
		for (int i = 1; i <= R1; ++i)
		{
			for (int j = 1; j <= C1; ++j)
			{
				cin >> data;
				if (data != 0)
					sp1->insert(i, j, data);
			}
		}
		if (op == 2)//transpose
		{
			Sparse*sp3 = new Sparse();
			transpose(sp1 , sp3);
			display(sp1);
			cout << endl;
			display(sp3);
			cout << endl;
			// sp1 = sp3; //after transpose just change the pointer
			matrix(sp1);
			cout << endl;
			matrix(sp3);
			cout << endl;
		}

		if (op == 1 || op == 3)//addition or mul
		{
			//MATRIX 2
			cin >> R2 >> C2;
			sp2->insert(R2, C2, 0);
			for (int i = 1; i <= R2; ++i)
				for (int j = 1; j <= C2; ++j)
				{
					cin >> data;
					if (data != 0)
						sp2->insert(i, j, data);
				}
			Sparse *sp3 = new Sparse();;
			if (op == 1) //add
			{
				if (R1 != R2 || C1 != C2)
				{
					cout << " wrong matrix sizes: \n";
					return 0;
				}
				add(sp1, sp2, sp3);
				cout << endl;
				display(sp1);
				cout << endl;
				display(sp2);
				cout << endl;
				display(sp3);
				cout << endl;
				cout << sp1->elementArr[0].data << endl;
				cout << sp2->elementArr[0].data << endl ;
				cout << sp3->elementArr[0].data << endl ;
				matrix(sp1);
				cout << endl;
				matrix(sp2);
				cout << endl;
				matrix(sp3);
				cout << endl;
			}
			else if (op == 3) //multiplication
			{
				if (C1 != R2)
				{
					cout << " wrong matrix sizes: \n";
					return 0;
				}
				multiply(sp1, sp2, sp3);
				cout << endl;
				// 	display(sp1);
				// 	cout << endl;
				// 	display(sp2);
				// 	cout << endl;
				// 	display(sp3);
				// 	cout << endl;
				// 	matrix(sp1);
				// 	cout << endl;
				// 	matrix(sp2);
				// 	cout << endl;
				// 	matrix(sp3);
				// 	cout << endl;
			}





			// for (int i = 0; i < 5 ; ++i)
			// {
			// 	cout << sp3->elementArr[i].row << " " << sp3->elementArr[i].col << "  " << sp3->elementArr[i].data;
			// 	cout  << endl;
			// }
			// cout << sp3->elementArr[0].row << " " << sp3->elementArr[0].col << "  " << sp3->elementArr[0].data;


		}
	}





// 	switch (option) {
// 	case 0:
// 		break;
// 	case 1:
// 		cout << "Enter VALUE of TREE sp to INSERT in AVL Tree: ";
// 		cin >> val;

// 		obj_avl.root = obj_avl.insert(val);
// 		cout << endl;
// 		break;

// 	case 2:
// 		cout << "Enter VALUE of TREE sp to delete in AVL Tree: ";
// 		cin >> val;
// 		obj_avl.root = obj_avl.deleteData(val);
// 		break;


// 	case 3:
// 		cout << "Enter VALUE of TREE sp to search in AVL: ";
// 		cin >> val;
// 		cout << obj_avl.search(val);
// 		break;

// 	default:
// 		cout << "Enter Proper Option number " << endl;
// 	}

// } while (option != 0);



	return 0;
}

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