Continually asks for password until the correct answer is entered.

Password.cpp

#include <iostream>
#include <string>
using namespace std;

int main () {

	string passcode = "123";
	string guess;
	bool correct = false;

	do {
		cout << "Enter password: ";
		cin >> guess;

		if (guess.compare(passcode) != 0) {
			cout << "Incorrect. Try again." << endl;
		} else {
			cout << "Correct!" << endl;
			correct = true;
		}

	} while (!correct);

	system("pause");
	return 0;
}