What punctuation is used to start and end a code block in C?

• A. Curly braces
• B. Backticks
• C. Brackets
• D. Parentheses

Answer: (A)

In C, a block of code that groups statements together and defines a scope is started and ended with curly braces. The opening { marks the beginning of the block, and the closing } marks its end. These braces are used to form the body of a function, the body of loops, conditionals, and any compound statement, making them essential for organizing code.

For example, a simple function has a block: void f() { int x = 0; x++; } Here the statements between { and } belong to the function body.

Backticks aren’t part of C syntax; they’re used in markdown to display code blocks. Brackets [ ] are for array indexing and subscripting, not blocks. Parentheses ( ) group expressions or appear in function calls, but they don’t define a code block.

So the punctuation that starts and ends a code block in C is curly braces.