Macros in C — a practical guide to C macros with clear examples you can reuse in real projects.
C Programming Tutorial Series (81/102). Prefer one article? Read the complete C programming tutorial.
Short description
Side effects in macro args are a classic pitfall (`SQR(i++)`).
Macro caution
Parenthesize fully
Avoid multi-eval side effects
Prefer inline functions (C99+) when suitable