Proposed exercise
Write a program which asks the user for his login and password. Both must be strings. After 5 wrong attempts, the user will be rejected.
Output
Solution
using System; public class PasswordFiveAttempts { public static void Main() { string user, pass; int count = 0; do { Console.Write("Enter username: "); user = Console.ReadLine(); Console.Write("Enter password: "); pass = Console.ReadLine(); count++; } while(((user != "user") || (pass != "password")) && (count != 5)); if (count == 5) Console.Write("Login attemp fail!"); else Console.Write("Password correct!"); } }