explain_fprintf_or_die(3)

💖 explain_fprintf_or_die(3) 💖

okay bestie, welcome to the explain_fprintf_or_die(3) page from the Library Functions Manual — yes she's a section 3 girlie and she is so helpful, you're gonna be obsessed 🫶

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✨ NAME ✨

explain_fprintf_or_die — formatted output conversion and report errors 💅

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🌸 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, ...);

like, that's the whole vibe right there, no cap ✨

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🦋 DESCRIPTION 🦋

So here's the tea. The explain_fprintf_or_die function is used to call the fprintf(3) system call. But — and this is the iconique part — on failure an explanation gets printed to stderr, obtained from the explain_fprintf(3) function, and then the process terminates by calling exit(EXIT_FAILURE). she does not play around. periodt. 💀

The explain_fprintf_on_error function is also used to call the fprintf(3) system call. On failure an explanation gets printed to stderr too, obtained from the explain_fprintf(3) function, but this one is lowkey chill about it — she still returns to the caller. no dramatic exit, just vibes. 🌈

• fp — the fp, exactly as to be passed to the fprintf(3) system call. like, don't get creative with it bestie, pass it as-is 💖
• format — the format, exactly as to be passed to the fprintf(3) system call. same energy, exactly as-is 🎀

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👑 RETURN VALUE 👑

The explain_fprintf_or_die function only returns on success — see fprintf(3) for more info, she's got the deets. On failure, she prints an explanation and exits, she does not return. gone. not coming back. main character exit 😭

The explain_fprintf_on_error function always returns the value return by the wrapped fprintf(3) system call. yes, "return" — that's literally what the page says, we keep it fr fr 🫶

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⭐ 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, ...);

look at her go, so iconic 🔥

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🌈 SEE ALSO 🌈

• fprintf(3) — formatted output conversion
• explain_fprintf(3) — explain fprintf(3) errors
• exit(2) — terminate the calling process

iykyk, the whole squad is linked 💜

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🎀 COPYRIGHT 🎀

• libexplain version 1.4
• Copyright (C) 2010 Peter Miller

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and that's the whole page bestie!! 🧚✨ this was explain_fprintf_or_die(3) from the Library Functions Manual, brought to you by libexplain version 1.4, with Copyright (C) 2010 Peter Miller holding it down at the bottom like the queen she is 👑💖 slay, go forth, and may all your fprintf calls succeed on the first try 🍓🌸