explain_fread_or_die(3)

💖 explain_fread_or_die — bestie edition 💖

okay so you're in the explain_fread_or_die(3) part of the manual, Library Functions Manual section, and honestly? this one's a whole vibe. it reads bytes AND handles the drama for you. periodt. ✨

---

🌸 NAME 🌸

explain_fread_or_die — binary stream input, and if it goes wrong, we report it. no cap.

---

🎀 SYNOPSIS 🎀

#include <libexplain/fread.h>
void explain_fread_or_die(void *ptr, size_t size, size_t nmemb, FILE *fp);

---

✨ DESCRIPTION ✨

so explain_fread_or_die is the glow-up wrapper around the fread(3) system call. it calls it for you, and if things go sideways it prints a little explanation to stderr (grabbed from explain_fread(3), iconic behavior) and then the process just… terminates. by calling exit(EXIT_FAILURE). 💀 dramatic but effective.

this function is meant to be used in a fashion similar to the following example:

size_t how_many = explain_fread_or_die(ptr, size, nmemb, fp);

now let's go through the arguments one by one, because every single one matters, fr fr:

• ptr — the ptr, exactly as to be passed to the fread(3) system call. like, copy-paste energy, don't get creative.
• size — the size, exactly as to be passed to the fread(3) system call. same deal.
• nmemb — the nmemb, exactly as to be passed to the fread(3) system call. you know the drill 💅
• fp — the fp, exactly as to be passed to the fread(3) system call. that's your file pointer bestie, treat it right.

Returns:

• this function only returns on success — the number read, or 0 on end-of-input. and on failure? prints an explanation and exits. so basically it returns or it dips. 🙈

---

🔥 SEE ALSO 🔥

• fread(3) — binary stream input
• explain_fread(3) — explain fread(3) errors
• exit(2) — terminate the calling process

---

👑 COPYRIGHT 👑

libexplain version 1.4 Copyright (C) 2008 Peter Miller

---

and that's the whole page bestie, you ate that. go read some bytes responsibly 🫶 this has been explain_fread_or_die(3) from the Library Functions Manual — brought to you by libexplain version 1.4, Copyright (C) 2008 Peter Miller 🌈 mwah 💋