/*
    loop2.cpp
    Dave Klick
    CIS 150
    2017-02-14
    
    User input validation.
*/

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

int main() {
    char again = 'F';
    
    do {
        cout << "This is too much fun!!!\n\n";
        
        again = 'J';
        while (again != 'Y' && again != 'N') {
            cout << "Do you want to see that again (Y/N)? ";
            cin >> again;
            again = toupper(again);
            if (again != 'Y' && again != 'N') cout << "Invalid input\n";
        }
    } while (again == 'Y'); 


    return 0;
}