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_strerror

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

Copy Code

    #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++
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