//Exercise 2
//Write a function called calculateSum that will take an integer number n as input, and calculate
// 1 + 2 + 3 + ..+ n
// And print the result on the screen. 

//Hint: the function header will be 

#include <stdio.h>
#include <stdlib.h>
void calculateSum(int n);
int main() {
    int n=5;
    calculateSum(n);
    return 0;
}
void calculateSum(int n)
{
    int sum=0;
    int i;
    for(int i=1;i<=n;i++)
    {
        sum=sum+i;
    }
    printf("the sum of 1 to %d is %d",n,sum);
}