Category: C#

Contrast stack-like value semantics with heap reference semantics.

Convert with casts, as, is, and Convert/Parse helpers.

Represent missing values with Nullable / T? for value types.

Read/write with Console and streams; validate input.

Use arithmetic, comparison, logical, assignment, and null-related operators.

Compute with + – * / and %.

Compare with == != = and EqualityComparer when needed.

Create and run a Hello World console app with the .NET CLI.

Learn .csproj, Program.cs, namespaces, and folders.

Build to IL/assemblies and run on the .NET runtime.