_strerror

Remonter à string.h - Index

Header File

string.h, stdio.h

Category

Memory and String Manipulation Routines

Prototype

char *_strerror(const char *s);

Description

Builds a customized error message.

_strerror lets you generate customized error messages; it returns a pointer to a null-terminated string containing an error message.

• If s is null, the return value points to the most recent error message.
• If s is not null, the return value contains s (your customized error message), a colon, a space, the most-recently generated system error message, and a new line. s should be 94 characters or less.

Return Value

_strerror returns a pointer to a constructed error string. The error message string is constructed in a static buffer that is overwritten with each call to _strerror.

Example

 #include <stdio.h>
 #include <errno.h>
 int main(void)
 {
    char *buffer;
    buffer = strerror(errno);
    printf("Error: %s\n", buffer);
    return 0;
 }

Portability

POSIX	Win32	ANSI C	ANSI C++
	+