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Note: The following is an excerpt from the official ISO catalog. It is provided here as a convenience and is not authoritative. Refer to the original document as the authoritative reference.

This document specifies the form and establishes the interpretation of programs written in the C programming language.

It specifies:

1. the representation of C programs;
2. the syntax and constraints of the C language;
3. the semantic rules for interpreting C programs
4. the representation of input data to be processed by C programs;
5. the representation of output data produced by C programs;
6. the restrictions and limits imposed by a conforming implementation of C.

This document does not specify:

1. the mechanism by which C programs are transformed for use by a data-processing system;
2. the mechanism by which C programs are invoked for use by a data-processing system;
3. the mechanism by which input data are transformed for use by a C program;
4. the mechanism by which output data are transformed after being produced by a C program;
5. 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;
6. all minimal requirements of a data-processing system that is capable of supporting a conforming implementation.