Hello world! using Command Prompt

With the introduction of .NET Core developing .NET applications is now quite easy 😀.

In this tutorial we will see how to create a Hello World! application using command prompt 😎. The same using visual studio was discussed in an earlier article.

For this tutorial what you need is a computer with any operating system. (power of cross platform 😉)

1. Download the .NET Core SDK. You can get it from here. Download the correct SDK based on your OS.
2. Install the SDK on the computer.
3. Open command prompt (Windows)/terminal(Linux/Mac-OS) and check whether SDK installed successfully by entering below command
   
   PowerShell

   dotnet

   1

   dotnet

   
   Entering the above command shows the below screen
   
   If you see this you are good to go 🙂 else there is some issue with installation 😥
4.  Now we are going to create our new app. Enter the below codes in command prompt
   
   PowerShell

   dotnet new console -o HelloWorld cd HelloWorld

   1 2	dotnet new console -o HelloWorld cd HelloWorld

   
   When you execute the above command the dotnet SDK will create a new console application with name HelloWorld. The -o creates a new directory in the name of application i.e HelloWorld. the cd or change directory command changes the directory to HelloWorld
   
5. Now a folder named HelloWorld is created with a file program.cs which contains the default code shown below
   
   program.cs

   C#

   using System; namespace myApp { class Program { static void Main(string[] args) { Console.WriteLine("Hello World!"); } } }

   1 2 3 4 5 6 7 8 9 10 11 12

   using System;   namespace myApp {     class Program     {         static void Main(string[] args)         {             Console.WriteLine("Hello World!");         }     } }

6. Now to run the application enter the below command
   
   PowerShell

   dotnet run

   1	dotnet run

   
   The moment of truth
   
   Success! 🔥
   Build Pass ✔

   Now you are an official C# and .NET Developer, as I said earlier at the tip of the ice berg 😁.