Similar to GAP_(数式処理システム)

C11 (C standard revision)

C99

CERT Coding Standards

Cg (programming language)

GNU Multiple Precision Arithmetic Library

HAProxy

International Obfuscated C Code Contest

LLVM

MISRA C

Open vSwitch

Pipeline Pilot

Portable C Compiler

The Portland Group

Pro*C

Sizeof

Typedef

While loop

Operators in C and C++

Off-by-one error

Brian Kernighan

Function prototype

Union type

Comma operator

Cython