Error numbers

 

C

Language

Standard Library

Type support

Dynamic memory management

Error handling

Program utilities

Date and time utilities

Strings library

Algorithms

Numerics

Input/output support

Localization support

Thread support (C11)

Atomic operations (C11)

 

Error handling

Error codes

Error codes

errno

Assertions

assert

 

Each of the macros defined in <errno.h> expands to integer constant expressions with type int, each with a unique positive value. The following constants are defined (the implementation may define more, as long as they begin with 'E' followed by digits or uppercase letters)

Defined in header <errno.h>
EDOM	Mathematics argument out of domain of function (macro constant)
EILSEQ (C99)	Illegal byte sequence (macro constant)
ERANGE	Result too large (macro constant)

See also

errno	macro which expands to POSIX-compatible thread-local error number variable (macro variable)
perror	displays a character string corresponding of the current error to stderr (function)
strerror	returns a text version of a given error code (function)