using System;

​

​

namespace CSharp_Shell

{

​

    public class Activity2

    {

        public static void Main()

        {

        Console.WriteLine("=====Calculator==========");// this is how to display text

        Console.WriteLine("Enter first number :");

        int isabel1 = int.Parse(Console.ReadLine()); //this is how to use input user in int data type

        Console.WriteLine("Enter second number :");

        int isabel2 = int.Parse(Console.ReadLine());

        int pilarca1; // this is integer data type with variable

        int pilarca2;

        int pilarca3;

        int pilarca4;

        pilarca1= isabel1 + isabel2; //this is how to add 2 or more item

        pilarca2= isabel1 - isabel2;//this is how to subtract 2 or more item

        pilarca3= isabel1 / isabel2;//this is how to divide 2 or more item

        pilarca4= isabel1 * isabel2;//this is how to multiply 2 or more item

        Console.WriteLine("sum : {0}",pilarca1);//this is how to display the variable value

        Console.WriteLine("difference : {0}",pilarca2);

        Console.WriteLine("devide : {0}",pilarca3);

        Console.WriteLine("multiplication : {0}",pilarca4);

        } 

      }                                                                                                                                                                        

    }

​