C language

 

C

Language

Headers

Type support

Program utilities

Variadic function support

Error handling

Dynamic memory management

Date and time utilities

Strings library

Algorithms

Numerics

Input/output support

Localization support

Atomic operations (C11)

Thread support (C11)

Technical Specifications

 

C language

Basic concepts

Keywords

Preprocessor

Statements

Expressions

Initialization

Declarations

Functions

Miscellaneous

History of C

Technical Specifications

 

This is a reference of the core C language constructs.

Basic concepts Comments ASCII chart Translation phases Identifier - Scope - Lifetime Lookup and Name Spaces Type - Arithmetic types Objects and Alignment The main function As-if rule Undefined behavior Memory model and Data races Keywords Preprocessor #if - #ifdef - #ifndef #define - # - ## #include - #pragma #line - #error Statements if - switch for while - do-while continue - break goto - return

Expressions Value categories Evaluation order and sequencing Constants and literals   Integer constants   Floating constants   Character constants   String literals   Compound literals(C99) Constant expressions Implicit conversions Operators   Member access and indirection   Logical - Comparison   Arithmetic - Assignment   Increment and Decrement   Call, Comma, Ternary   sizeof - _Alignof(C11)   Cast operators Operator precedence Generic selection(C11) Initialization Scalar Array Structure/Union

Declarations Pointers - Arrays Enumerations Storage duration and Linkage const - volatile - restrict(C99) struct - union - Bit fields _Alignas(C11) - typedef _Static_assert(C11) Atomic types(C11) External and tentative definitions Functions Function declaration Function definition inline(C99) - _Noreturn(C11) Variadic arguments Miscellaneous History of C Conformance Inline assembly Signal handling Analyzability(C11)