strerror - get error message for error code
Standard C Library (libc, -lc)
#include <string.h>
const char *
strerror(int code);
The error string for the error specified by code (see errno for more information) is retrieved.
It is not itself an error to request error strings for out-of-range values of code, but the string returned under such circumstances may not be very enlightening when printed.
The error string is returned.