Simple ATM Machine coding in C++

Simple ATM Machine Codding in C++:- Here is a Simple ATM Machine Coding in c++(Automated teller machine).The code is written in c++ language. Dev  is used to compile the code. The code carry out all the functions that all standard atm machines do INSTRUCTIONS: PIN CODE is "1111" TASKS:-  It performs following functions:- 1.To check Balance 2.To Withdraw 3.To Deposit 4.To Exit CODING:- #include <iostream> #include <conio.h> #include <string.h> using namespace std; int main () { system("color F0");     int deposit=0;     double amount=5000;     int withdraw= 0;     int choice=0;     int pin=0;    int keypin = 1111;               cout << "Enter your pin code: ";     cin >> pin;                  if (pin==keypin) ...