//joelito B. Namoc

//Muelver Octavio

​

using System;

​

namespace LoginApp

{

   public class Program

    {

       public static void Main(string[] args)

        {

            string[] usernames = { "angel17", "cardod", "johnnys" };

            string[] passwords = { "ang123", "probin", "ph" };

            bool userFound = false;

            int foundIndex = -1;

            for(int attempts=0; attempts<3;attempts++)

            {

            Console.WriteLine("Enter username: ");

            string uname = Console.ReadLine();

            Console.WriteLine("Enter password: ");

            string pass = Console.ReadLine();

            for(int i=0; i<usernames.Length;i++)

            {

                if (uname == usernames[i])

                {

                    userFound = true;

                    foundIndex = i;

                    break;

                }

            }

​

            if(userFound && pass  == passwords[foundIndex]){

                Console.WriteLine("Logged in successfully");

                break;

            }

            else

                Console.WriteLine("Invalid username and/or password");

            }

        }

    }

}

​