#include<iostream> 
#include<string>
#include<stdlib.h>
#include<conio.h>
#include<windows.h>
using namespace std;


class Card		//Declare card class
{
public:
	friend ATM;//Declare friends
	Card::Card(string Name, int Account)//Constructor
	{
		name = Name;
		account = Account;
	}
protected:
	string name;//Cardholder's Name
	int account;//account number
};


class BankCard:public Card {
public:
	friend ATM;//Friend class ATM. Enable ATM class to access private members of bank card class
	BankCard(string Name, int Account, string Password, float Money)
		:Card(Name,Account)
	{
		password = Password;
		money = Money;
	};					//Constructor
private:
	string password;//password
	float money;//total amount
	
};

class ATM//ATM type, which simulates the main system of the self-service teller machine
{
public:
	void Information();//
	int check_password(int Account, string Password);//Verify account password function
	void transfer_money();//Transfer function
	void check_remain_money();//Query balance function
	void deposit();//Save money function
	void drawing();//Withdraw money function
	void change_password();//Modify password function
	ATM(string Name, int Account, string Password, float Money)
	{
		name = Name;
		account = Account;
		password = Password;
		money = Money;
	}
private:
	string password;//password
	float money;//total amount
	string name;//Cardholder's Name
	int account;//account number
	
};
void ATM::Information()
{
	cout<<"your name:"<<name<<endl;
	cout<<"Your account: " << account << endl;
	system("pause");//Output press any key to continue
	system("cls");//Clear screen function
}

void ATM::deposit()        //Save money function
 {
	float e_money;//Define the variable to store the amount to be deposited
	cout << "Please enter the amount you want to deposit" << endl;
	cin >> e_money;
	money += e_money;//Change the total amount
	cout << "Your balance is" << money << "yuan" << endl;
	system("pause");//Output press any key to continue
	system("cls");//Clear screen function
}

void ATM::drawing()        //Withdraw money function
{
	float e_money;//Define the variable to store the amount to be taken
	cout << "Please enter the amount you want to withdraw" << endl;
	cin >> e_money;
	if (e_money > money)//If the withdrawal is more than the total amount
		cout << "Insufficient account balance" << endl;
	else				//If the withdrawal is less than the total amount
	{	
		money -= e_money;
		cout << "Your balance is" << money << "yuan" << endl;
	}
	system("pause");//Output press any key to continue
	system("cls");//Clear screen function
}

void ATM::change_password()	// //Modify password function
{				
	string new_password1, new_password2, pwd;
	cout << "Please enter the original password: ";
	cin >> pwd;
	cout << endl;
	if (pwd == password)
	{
		cout << "Please enter a new password: ";
		cin >> new_password1;
		cout << endl;
		cout << endl;
		while (new_password1 == password)
		{
			cout << "The same as the old password, please enter a new password: ";
			cin >> new_password1;
			cout << endl;
		}
		cout << "Please enter the new password again: ";
		cin >> new_password2;
		cout << endl;
		while (new_password1 != new_password2)
		{
			cout << "Different from the first input, please input again: ";
			cin >> new_password2;
			cout << endl;
		}
		password = new_password2;
		cout << "password has been updated! " << endl;
		cout << endl;
	}
	else if (pwd != password) 
	{
		do {
			cout << "Wrong password, please re-enter: ";
			cin >> pwd;
		} while (pwd != password);
		change_password();
	}
	system("pause");//Output press any key to continue
	system("cls");//Clear screen function
}

void ATM::transfer_money() //Transfer function
{
	float Transfer_money = 0.0;//Define the variable to store the amount to be transferred
	cout << "Please enter the amount to be transferred" << endl;
	cin >> Transfer_money;
	if (Transfer_money > money)//If the transfer amount is greater than the total amount
		cout << "Insufficient account balance" << endl;
	else						//The transfer amount is less than the total amount
	{
		money -= Transfer_money;
		cout << "The operation was successful, your balance is" << money << "yuan" << endl;
	}
	system("pause");//Output press any key to continue
	system("cls");  //Clear screen function
}

void ATM::check_remain_money() {			//Check balances
	cout << "Your balance is" << money << endl;
	system("pause");//Output press any key to continue
	system("cls");//Clear screen function
}

int ATM::check_password(int Account, string Password)  //Verify account password function
{
	int i = 0;
	cout << "Please enter your account and password" << endl;
	for (i = 0; i < 3; i++)
	{           //Cannot exceed three attempts
		cout << "account number:";
		cin >> Account;
		cout << "password:";
		cin>>Password;
		if ((Account ==account)&&(Password == password))
		{
			cout << "Login to China Minsheng Bank successfully!" << endl
				<< "welcome!" << endl;
			return 1;
		}
		else 
		{
			cout << "Incorrect account or password, please re-enter" << endl;
			if (i >= 2)
			{
				cout << "You have tried more than three times and have been frozen" << endl;
				system("pause");//Output press any key to continue
			}
		}
	}
	return 0;
}


int main()
{
	ATM atm("Zhao Si",198754, "311817", 1314);


	//Define the ATM class object atm, call the constructor to assign values ​​to the private members
	int account;
	string password;
	int j = 0;
	int flag = 0;
	flag = atm.check_password(account, password);
	while (flag)
	{
		cout << "Please choose your needs: 1. Information query 2. Deposit money 3. Withdraw money 4. Change password 5. Transfer 6. Check balance 7. Exit" << endl;
		cin >> j;
		switch (j)
		{
		case 1:{atm.Information();break;}
		case 2:{atm.deposit(); break;}
		case 3:{atm.drawing(); break;}
		case 4:{atm.change_password(); break;}
		case 5:{atm.transfer_money(); break;}
		case 6:{atm.check_remain_money();break;}
		case 7:{break;}
		default:break;
		}
		if (j==6)break;
		if(j != 1 && j != 2 && j != 3 && j != 4 &&j != 5&&j!=6){
			cout<<"Please enter the correct command!"<<endl;
			system("pause");
			system("cls");
		}
	}
	return 0;
}