Man page - explain_getw_or_die(3)

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Manual

explain_getw_or_die

NAME
SYNOPSIS
DESCRIPTION
RETURN VALUE
EXAMPLE
SEE ALSO
COPYRIGHT

NAME

explain_getw_or_die - input a word (int) and report errors

SYNOPSIS

#include <libexplain/getw.h>
int explain_getw_or_die(FILE *fp);
int explain_getw_on_error(FILE *fp);

DESCRIPTION

The explain_getw_or_die function is used to call the getw (3) system call. On failure an explanation will be printed to stderr , obtained from the explain_getw (3) function, and then the process terminates by calling exit(EXIT_FAILURE).

The explain_getw_on_error function is used to call the getw (3) system call. On failure an explanation will be printed to stderr , obtained from the explain_getw (3) function, but still returns to the caller.

The fp, exactly as to be passed to the getw (3) system call.

RETURN VALUE

The explain_getw_or_die function only returns on success, see getw (3) for more information. On failure, prints an explanation and exits, it does not return.

The explain_getw_on_error function always returns the value return by the wrapped getw (3) system call.

EXAMPLE

The explain_getw_or_die function is intended to be used in a fashion similar to the following example:

int result = explain_getw_or_die(fp);