Classes

In C#, the code you write typically lives inside a class. A class is like a container or blueprint that holds your program's code together — its data and the actions it can perform.

class Program
{

}

The keyword "class" tells the C# compiler: "A new class starts here." Sometimes it is preceded by "public" — this means the class is visible and usable from other parts of a larger project, not just within its own file.

public class Car
{

}

In C#, the code you write typically belongs inside a ____.

By convention, a class name starts with a capital letter and uses "PascalCase" for multiple words — for example "Program", "Car", or "BankAccount". This isn't a strict compiler rule, but practically every C# developer follows it so code looks consistent for everyone.

What best describes a class in C#?

For everything you'll learn in this level, a C# program's code is housed inside at least one class. Next, we'll look at how a program inside such a class actually starts running: with the Main() method.

A class name conventionally starts with a lowercase letter in C#.