Answer to Question #282822 in C++ for qq_576

Question

!!!Please do exactly like this when the program runs this all should include also the * when typing the PIN!!!

AUTOMATED TELLER MACHINE

Screen/layout

MAD AUTOMATED TELLER MACHINE IS ONLINE

INPUT YOUR 6 DIGIT PIN ******

ENTER[Y/N]: Y

(default PIN is mad123; if correct go to main screen otherwise display the message "WRONG PIN". On the 3rd wrong attempt the prog. should exit)

[C]HECK BALANCE

[D]EPOSIT CASH

[W]ITHDRAW CASH

C[H]ANGE PIN

TRANSACTION: [C|D|W|H]: C

YOUR CURRENT BALANCE IS:

Php 0.00

TRANSACTION: [C|D|W|H]: D

INSERT YOU CASH

Php 15,000.00

Transaction [C|D|W|H]: W

INPUT THE AMOUNT OF WITHDRAWAL

Php 20,000.00

CASH NOT ENOUGH, TRY AGAIN

INPUT THE AMOUNT OF WITHDRAWAL

Php 5,000.00

TRANSACTION: [C|D|W|H]: H

INPUT YOUR CURRENT PIN ******

INPUT YOUR NEW PIN ******

VERIFY YOUR NEW PIN ******

ENTER[Y/N]: Y

Answer 1

#include<iostream>
#include<conio.h>
#include<cstring>

using namespace std;

class ATM
{
	double amount;
	char PIN[7];
public:
	ATM(double _amount, char _PIN[6]):amount(_amount)
	{
		int i;
		for (i = 0; i < 6; i++)
		{
			PIN[i] = _PIN[i];
		}
		PIN[i] = '\0';
	}


	void CheckBalance()
	{
		cout << "\nYOUR CURRENT BALANCE IS: \nPhp " << amount;
	}
	void DepositCash()
	{
		double insAmount;
		cout << "\nINSERT YOUR CASH: \nPhp ";
		cin >> insAmount;
		amount += insAmount;
	}

	void WithdrawCash()
	{
		double insAmount;
		bool done = false;
		do
		{
			cout << "\nINPUT THE AMOUNT OF WITHDRAWAL: \nPhp ";
			cin >> insAmount;
			if (insAmount > amount)
			{
				cout << "CASH NOT ENOUGH, TRY AGAIN";
			}
			else
			{
				amount -= insAmount;
				done = true;
			}
		} while (!done);
	}


	void ChangePIN()
	{
		cout << "\nINPUT YOUR CURRENT PIN ";
		char pin[7];
		int i;
		for (i = 0; i < 6; i++)
		{
			pin[i] = _getch();
			_putch('*');
		}
		pin[i] = '\0';
		if (strcmp(pin, PIN) != 0)
		{
			cout << "\nWRONG PIN!\n";
		}
		else
		{
			char ch;
			do
			{
				cout << "\nINPUT YOUR NEW PIN ";
				for (i = 0; i < 6; i++)
				{
					pin[i] = _getch();
					_putch('*');
				}
				pin[i] = '\0';
				cout << "\nVERIFY YOUR NEW PIN ";
				char NEWpin[7];
				for (i = 0; i < 6; i++)
				{
					NEWpin[i] = _getch();
					_putch('*');
				}
				NEWpin[i] = '\0';
				if (strcmp(pin, NEWpin) != 0)
				{
					cout << "\nWRONG NEW PIN!\n";
				}
				else
				{
					for (i = 0; i < 6; i++)
					{
						PIN[i] = pin[i];
					}
				}
				cout << "\nENTER[Y/N]:";
				cin >> ch;
				if (ch == 'Y')
				{
					break;
				}
			} while (true);
		
		}
	}
};


void Menu()
{
	cout << "[C]HECK BALANCE\n"
		<< "[D]EPOST CASH\n"
		<< "[W]ITHDRAW CASH\n"
		<< "C[H]ANGE PIN\n"
		<< "[E]XIT PROGRAM\n";
}


int main()
{
	ATM atm(0,"mad123");
	char pin[7];
	char ch;
	int attempt = 0;
	do
	{
		cout << "******MAD AUTOMATED TALLER MACHINE IS ONLINE******\n";
		cout << "INPUT YOUR 6 DIGIT PIN ";
		int i;
		for (i = 0; i < 6; i++)
		{
			pin[i] = _getch();
			_putch('*');
		}
		pin[i] = '\0';
		cout << "\nENTER[Y/N]:";
		cin >> ch;
		if (ch == 'Y')
		{
			if (strcmp(pin, "mad123") != 0)
			{
				cout << "WRONG PIN!\n";
				attempt++;
				cout << "You have only " << 3 - attempt << " attempts left!\n";
			}
			else
			{
				break;
			}
		}
	} while (attempt<3);
	
	if (attempt == 3)
		return -1;


	Menu();
	do
	{
		cout<<"\nTRANSACTION: [C|D|W|H]: ";
		cin >> ch;
		switch (ch)
		{
			case 'C':
			{
				atm.CheckBalance();
				break;
			}
			case 'D':
			{
				atm.DepositCash();
				break;
			}
			case 'W':
			{
				atm.WithdrawCash();
				break;
			}
			case 'H':
			{
				atm.ChangePIN();
				break;
			}
		}
	} while (ch != 'E');
}