📝 Theory (Short Description)

• .NET SDK → The toolkit that lets you build and run C# programs.

• CLR (Common Language Runtime) → The engine that runs your code.

• Project templates → dotnet new console creates a simple console app.

• IDE → Visual Studio / VS Code help you write and debug code.

💻 Practice

Step 1 – Install .NET SDK

• Download & install from: https://dotnet.microsoft.com/download

• Verify installation:

  dotnet --version
  

Step 2 – Create Your First Project

mkdir Playground
cd Playground
dotnet new console -n HelloWorldApp
cd HelloWorldApp

Step 3 – Run the Project

dotnet run

Expected output:

Hello, World!

Step 4 – Modify Program.cs

Open Program.cs and change it to:

Console.WriteLine("Hello Tuong Vy, welcome to C#!");

Run again:

dotnet run