Compiling and running first c# program using default compiler that comes with Windows Operating System

windows sdk comes with a default c# compiler.

In order to use the default c# compiler that comes with windows operating system, follow the steps shown below:

1. include the below url in path environment variable

C:\Windows\Microsoft.NET\Framework64\v4.0.30319

2. Open notepad and write your first c# program and save the file with the same name as class name with .cs extension

For ex: if you copy and paste the below code in notepad

using System;

namespace DeclaringConstants

{

    class Program

    {

        static void Main(string[] args)

        {

            const double pi = 3.14159;  

           

            // constant declaration

            float r;

            Console.WriteLine("Enter Radius: ");

            r = (float)Convert.ToDouble(Console.ReadLine());

            double areaCircle = pi * r * r;

            Console.WriteLine("Radius: {0}, Area: {1}", r, areaCircle);

            Console.ReadLine();

        }

    }

}

Save the file as Program.cs

3. Open command prompt and type

>>csc Program.cs

4. If incase u get no error, type

>>Program

5. Output will be as follows