using System;

public class Program

{

    public static void Main()

    {

​

    string UserName ="" ;

    string UserPassword ="";

    bool ValidCredentials = false;

​

    string[] ValidUserNames = new string[] {"user","Bob","Jane"};

    string[] ValidUserPasswords = new string[]{"pass","1234","!@#$"};

​

    do

    {

    int eachUser = 0;

    Console.WriteLine("User Name or Email");

    UserName = Console.ReadLine();

​

    Console.WriteLine("Password");

    UserPassword = Console.ReadLine();

    do

    {

        ValidCredentials= ValidateUserInfo(userName,userPassword,ValidUserNames[eachuser],validuserpaswords[eachuser]);

        eachUser++;

        Console.WriteLine("eachUser =" + eachUser);

if(ValidCredentials== true

    }while(eachUser < ValidUserNames.Length);

​

    if(ValidCredentials == false)

    {

    Console.WriteLine("Invalid Credentials");

    }

​

    }while(!ValidCredentials);

    Console.WriteLine("Login Successful!!!");

    }

public static bool validateuserInfo(string usernametocheck,string passwordtocheck,string ValidUserName,string ValidUserPassword);

    (

                        if(usernametocheck==validUsername