C# on Groundhog Learning

Comment (C#)

Mon, 01 Jan 0001 00:00:00 +0000

A single line comment starts with // and continues until the end of the line.

// Everything on this line is commented.
Console.WriteLine("Hello, World!");

You can also write it inline, to the right of your code:

Console.WriteLine("Hello, World!"); // Everything to the right is commented.

A block comment starts with /* and ends with */. Everything in between is ignored.

/*
This is a block comment
It can span
multiple lines
*/
Console.WriteLine("Hello, World!");

You can also use block comments in a single line or inline:

Mon, 01 Jan 0001 00:00:00 +0000

In this tutorial, you will create a simple C# project in Visual Studio Code using the C# Dev Kit extension.

Download and Install Visual Studio Code (external link) if you have not done so already.
Open Visual Studio Code.
Install the C# Dev Kit (external link) extension.
- Open the Extensions panel on the left sidebar.
- Search for C# Dev Kit and click Install.
Open the File Explorer panel.
Select Open Folder.
Choose an existing folder or create a new one for your project.
Open the Command Palette by pressing Ctrl+Shift+P
Run the command .NET: New Project....
Select a project template, for example: Console App.
Enter the project name.
Press Enter to create the project in the selected folder.
Select the solution file format: .sln.
Press Enter to create the project.
Open the file Program.cs file to start coding.

After completing these steps, your project folder will contain:

Mon, 01 Jan 0001 00:00:00 +0000

To declare a variable in C#, you write the type, followed by the name, followed by = and the initial value:

string choice = "1";

Instead of writing the type explicitly, you can use var and let the compiler figure it out:

Mon, 01 Jan 0001 00:00:00 +0000

In this tutorial, you will learn how to run a C# console program in Visual Studio Code.

Open Visual Studio Code and open the folder containing your project.
Open the main program file, usually Program.cs.
Click the play button at the top-right corner.
VS Code will build and run the program, and the Terminal panel will open automatically, showing the output.

Make sure you save your changes (File -> Save or Ctrl + S) to run the latest version of your program.