15) Write a Program To Implement Subtraction

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;

namespace pro6
{
    class Program
    {
        static void Main(string[] args)
        {
            /* substraction of two numbers*/
            Console.WriteLine("enter First Number");
            int n1 = Convert.ToInt32(Console.ReadLine());
            Console.WriteLine("enter Secon Number");
            int n2 = Convert.ToInt32(Console.ReadLine());
            int res = n1 - n2;
            Console.WriteLine("Result is"+res);
            Console.ReadLine();
        }
    }
}

Output :