test_repo/csharphelloworld.cs

// https://www.geeksforgeeks.org/how-to-compile-decompile-and-run-c-code-in-linux/
//
// Use mcs compiler to create a windows executable csharphelloworld.exe from csharphelloworld.cs
//
// mcs -out:csharphelloworld.exe csharphelloworld.cs
// mono csharphelloworld.exe

using System;
 
public class GFG {
 
    static public void Main()
    {
        Console.WriteLine("Hello World!");
        Console.ReadKey();
      
    }
}