strerror

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Header File

string.h

Category

Memory and String Manipulation Routines

Prototype

char *strerror(int errnum);

Description

Returns a pointer to an error message string.

strerror takes an int parameter errnum, an error number, and returns a pointer to an error message string associated with errnum.

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++
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