Section V—The Standard ANSI C Library with C99 Additions
The ANSI C library classifies functions into several groups, with each group having an associated header file. This appendix gives you an overview of the library, listing the header files and briefly describing the associated function. Some of these functions (for example, several I/O functions) are discussed in much greater detail in the text. More generally, for complete descriptions, consult the documentation for your implementation, or a reference manual, or try an online reference such as the following:
This header file defines assert()as a macro. Defining the macro identifier NDEBUG before including the assert.h header ...