Working with Variables in c#.net

A variable refers to the memory address. When you create variable, it creates holds space in the memory that is used for storing temporary data. As you know about c# data types, each data type has predefined size. In this page you will learn how to use data types to create variable.

using System;

using System.Collections.Generic;

using System.Linq;

using System.Text;

namespace Working_with_Variables

{

    class Program

    {

        static void Main(string[] args)

        {

            //cretaing integer type variable

            int num1, num2, result;

            //Displaying message

            Console.WriteLine("Please enter 1st value");

            //Accepting Value in num1

            num1 = Int32.Parse(Console.ReadLine());

            //Displaying message

            Console.WriteLine("Please enter 2nd Value");

            //Accepting Value

            num2 = Int32.Parse(Console.ReadLine());

            result = num1 + num2; //processing value and adding

            Console.WriteLine("Add of {0} and {1} is {2}", num1, num2, result); //Output

            Console.ReadLine();

        }

    }

}

In the preceding example we create three integer type variable num1,num2 and result. num1 and num2 is used for accepting user value and result is used for adding both number. The new thing in the preceding example is number of placeholders.

Console.WriteLine("Add of {0} and {1} is {2}", num1, num2, result); //Output

If you want to display more than one variable values then you will have to assign place holder for each variables. In the preceding line {0} denotes to num1, {1} denotes to num2 and {2} denotes to result.

num1 = Int32.Parse(Console.ReadLine());

C# accepts string value by default. If you are using other value then you will have to convert of specific data types.