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ISO/IEC 9899:2024

Information technology - Programming languages - C

Standard Details

This document specifies the form and establishes the interpretation of programs written in the C programming language. It is designed to promote the portability of C programs among a variety of data-processing systems. It is intended for use by implementers and programmers. It specifies:

— the representation of C programs;

— the syntax and constraints of the C language;

— the semantic rules for interpreting C programs;

— the representation of input data to be processed by C programs;

— the representation of output data produced by C programs;

— the restrictions and limits imposed by a conforming implementation of C.

This document does not specify:

— the mechanism by which C programs are transformed for use by a data-processing system;

— the mechanism by which C programs are invoked for use by a data-processing system;

— the mechanism by which input data are transformed for use by a C program;

— the mechanism by which output data are transformed after being produced by a C program;

— the size or complexity of a program and its data that will exceed the capacity of any specific data-processing system or the capacity of a particular processor;

— all minimal requirements of a data-processing system that is capable of supporting a conforming implementation.

Annex J gives an overview of portability issues that a C program can encounter.

General Information

Status : ACTIVE
Standard Type: Main
Document No: ISO/IEC 9899:2024
Document Year: 2024
Pages: 758
Edition: 5.0
  • Section Volume:
  • ISOIEC JTC 1.SC 22 Programming languages, their environments and system software interfaces
  • ICS:
  • 35.060 Languages used in information technology

Life Cycle

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ACTIVE
ISO/IEC 9899:2024
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