25.02.28 / Hello World!

C

#include <stdio.h>

int main(void){
    printf("Hello World!");
    
    return 0;
}

 

C#

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
 
namespace Hello_World
{
    class Program
    {
        static void Main(string[] args)
        {
            Console.WriteLine("Hello World!");
        }
    }
}