Code Blocks

Curly braces { } group multiple statements together into a shared block in C#. A block marks a clear beginning and a clear end — for example the body of a class or the body of a method.

class Program
{
    static void Main()
    {
        Console.WriteLine("Hello, C#!");
    }
}

Blocks can be nested inside one another, similar to a box inside another box. The block of the Main() method lies completely inside the block of the class — it starts later and ends earlier than the class block.

class Program { // Start of class block
    static void Main() { // Start of method block
        Console.WriteLine("Hello, C#!");
    } // End of method block
} // End of class block

What are curly braces { } used for in C#?

Every opening brace { must eventually have a matching closing brace }. If one is missing, the compiler can't tell where a block ends and reports an error — even if the rest of the code is correct.

Every opening curly brace { needs a matching closing brace }.

As a reminder: the class itself is a block, the Main() method is another block inside it, and the individual statements from the last lesson sit inside these blocks. That's how everything in a C# program fits together.

The block of the Main() method lies ____ the block of the class.