libexplain/ungetc_or_die.c File Reference

#include <libexplain/ac/stdio.h>
#include <libexplain/output.h>
#include <libexplain/ungetc.h>

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Functions
void	explain_ungetc_or_die (int c, FILE *fp)

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Function Documentation

void explain_ungetc_or_die	(	int	c,
		FILE *	fp
	)

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

Parameters:

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

Returns:

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

Example:

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

 explain_ungetc_or_die(c, fp);

Definition at line 26 of file ungetc_or_die.c.