explain_fprintf_or_die(3)
NAME
explain_fprintf_or_die - formatted output conversion and report errors
SYNOPSIS
#include <libexplain/fprintf.h> int explain_fprintf_or_die(FILE *fp, const char *format, ...); int explain_fprintf_on_error(FILE *fp, const char *format, ...);
DESCRIPTION
The explain_fprintf_or_die function is used to call the fprintf(3) system call. On failure an explanation will be printed to stderr, obtained
from the explain_fprintf(3) function, and then the process terminates
by calling exit(EXIT_FAILURE).
The explain_fprintf_on_error function is used to call the fprintf(3)
system call. On failure an explanation will be printed to stderr,
obtained from the explain_fprintf(3) function, but still returns to the
caller.
fp The fp, exactly as to be passed to the fprintf(3) system call.
- format The format, exactly as to be passed to the fprintf(3) system
- call.
RETURN VALUE
The explain_fprintf_or_die function only returns on success, see
fprintf(3) for more information. On failure, prints an explanation and
exits, it does not return.
The explain_fprintf_on_error function always returns the value return
by the wrapped fprintf(3) system call.
EXAMPLE
- The explain_fprintf_or_die function is intended to be used in a fashion
similar to the following example:
- int result = explain_fprintf_or_die(fp, format, ...);
SEE ALSO
- fprintf(3)
- formatted output conversion
- explain_fprintf(3)
- explain fprintf(3) errors
- exit(2) terminate the calling process
COPYRIGHT
- libexplain version 0.37
Copyright (C) 2010 Peter Miller