How to make Two Number Add Program in C sharp

How to make Three Number  Add Program in C sharp:-

using System;

using System.Collections.Generic;

using System.Linq;

using System.Text;

using System.Threading.Tasks;

namespace how_to_add_three_num

{

    class Program

    {

        static void Main(string[] args)

        {

            int X, Y, Z, Sum;

            Console.Write("Enter The value of A :");

            X = Convert.ToInt16(Console.ReadLine());

            Console.Write("Enter the value of B :");

            Y = Convert.ToInt16(Console.ReadLine());

            Console.Write("Enter the value of C :");

            Z = Convert.ToInt16(Console.ReadLine());

            Sum = X + Y + Z;

            Console.Write("Thee Num add The value :" + Sum);

            Console.ReadKey();

        }

    }

}

Output:-