Answer to Question #283211 in C++ for Eva

Question

(There's an error in the code when I run the program how can I fix this?)

(This is the question and the answer also answered but, there's an error, hope you could help) (Question #282822 in C++ for qq_576)

main.cpp:71:13: error: ‘_getch’ was not declared in this scope; did you mean ‘getch’?

  71 |  pin[i] = _getch();

   |       ^~~~~~

   |       getch

main.cpp:72:4: error: ‘_putch’ was not declared in this scope; did you mean ‘fputc’?

  72 |  _putch('*');

   |  ^~~~~~

   |  fputc

main.cpp:95:18: error: ‘_getch’ was not declared in this scope; did you mean ‘getch’?

  95 |   NEWpin[i] = _getch();

   |         ^~~~~~

   |         getch

main.cpp:96:6: error: ‘_putch’ was not declared in this scope; did you mean ‘fputc’?

  96 |   _putch('*');

   |   ^~~~~~

   |   fputc

main.cpp: In function ‘int main()’:

main.cpp:135:12: warning: ISO C++ forbids converting a string constant to ‘char*’ [-Wwrite-strings]

 135 | ATM atm(0,"mad123");

   |      ^~~~~~~~

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');
}

#include <conio.h> won't work on os other than Windows

To run this program in other os install extra packages. For more detail visit

https://stackoverflow.com/questions/8792317/where-is-the-conio-h-header-file-on-linux-why-cant-i-find-conio-h