using System;

using static System.Console;

​

public class Program

{

    public static void Main()

    {

        IsEqual(

            @"Welcome Friends! 

Have a nice day!", 

            Welcome()

        );

        IsEqual(

            @"Welcome friend John !

Have a nice day!", 

            WelcomeFriend("John")

        );

        IsEqual(

            @"Welcome friend Jubiko !

Have a nice day!", 

            WelcomeFriend("Jubiko")

        );

    }

​

/// Solutions

    public static string WelcomeFriend(string name) 

    {

        return @$"Welcome friend {name} !

Have a nice day!";

    }

    public static string Welcome()

    {

        return @"Welcome Friends! 

Have a nice day!!";

    }

​

// Extensions

    public static void IsEqual(string excepted, string actual) 

    {

        if (excepted == actual)

        {

            WriteLine(@$"Result: {true}

Excepted: 

{excepted}

Actual:

{actual}");

        }

        else 

        {

            WriteLine(@$"Result: {false}

Excepted: 

{excepted} 

Actual:

{actual}");

        }

        WriteLine();

    }

}

​

​