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Man Pages


Manual Reference Pages  -  EXPLAIN_SPRINTF_OR_DIE (3)

NAME

explain_sprintf_or_die - formatted output conversion and report errors
"formatted output conversion and report errors"

CONTENTS

Synopsis
Description
Return Value
Example
See Also
Copyright

SYNOPSIS

#include <libexplain/sprintf.h>

int explain_sprintf_or_die(char *data, const char *format, ...);
int explain_sprintf_on_error(char *data, const char *format, ...);

DESCRIPTION

The B]explain_sprintf_or_die function is used to call the I]sprintf(3) system call. On failure an explanation will be printed to I]stderr, obtained from the I]explain_sprintf(3) function, and then the process terminates by calling CW]exit(EXIT_FAILURE).

The B]explain_sprintf_on_error function is used to call the I]sprintf(3) system call. On failure an explanation will be printed to I]stderr, obtained from the I]explain_sprintf(3) function, but still returns to the caller.
I]data The data, exactly as to be passed to the I]sprintf(3) system call.
I]format The format, exactly as to be passed to the I]sprintf(3) system call.

RETURN VALUE

The B]explain_sprintf_or_die function only returns on success, see I]sprintf(3) for more information. On failure, prints an explanation and exits, it does not return.

The B]explain_sprintf_on_error function always returns the value return by the wrapped I]sprintf(3) system call.

EXAMPLE

The B]explain_sprintf_or_die function is intended to be used in a fashion similar to the following example:
int result = explain_sprintf_or_die(data, format, ...);

SEE ALSO

I]sprintf(3)
  formatted output conversion
I]explain_sprintf(3)
  explain I]sprintf(3) errors
I]exit(2) terminate the calling process

COPYRIGHT

libexplain version 1.3
Copyright © 2010 Peter Miller
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