strrchr(3)

💖 strrchr(3) — string rear-search character 💖

okay bestie, come sit with me, we're gonna talk about strrchr from the Linux man-pages (that's the manual name right there in the corner, strrchr(3) — section 3, library functions, iykyk) 🎀

---

✨ LIBRARY ✨

Standard C library (libc, -lc) 💅

so like, yes, it lives in libc, and yes you link it with -lc — the usual. nothing dramatic, she's just a normal library girlie.

---

🌸 SYNOPSIS 🌸

#include <string.h>

char *strrchr(const char *s, int c);

look at her. so small. so powerful. two arguments and she's done. 🦋

---

💫 DESCRIPTION 💫

So strrchr() returns a pointer to the last occurrence of the character c in the string s. That's it, that's the whole job. She searches from the back, which is honestly main character energy — everyone else goes forward, she goes backwards. 😌

Like, if strchr() is the friend who shows up first, strrchr() is the friend who shows up last and still gets the aux cord.

And the way that she's literally equivalent to this:

memrchr(s, c, strlen(s) + 1)

no cap. that's the exact equivalence, strlen(s) + 1 and everything (the +1 is for the null terminator bestie, we don't forget her 💀).

---

👑 RETURN VALUE 👑

See strchr(3).

fr fr, go read that one, it's got the whole return-value breakdown. I'm not gonna make stuff up, that's not the vibe.

---

🌈 ATTRIBUTES 🌈

For an explanation of the terms used in this section, see attributes(7). ✨

Here's the tea on strrchr():

• Interface: strrchr()
• Attribute: Thread safety
• Value: MT-Safe

so she's MT-Safe — multithread-safe, she can hang with all your threads at once and not start drama. 🫶 (that's not me guessing, that's literally the table, bestie.)

---

⭐ STANDARDS ⭐

• C11
• POSIX.1-2008

iconic. certified. periodt. 💅

---

🕰️ HISTORY 🕰️

She's been around forever, lowkey:

• POSIX.1-2001
• C89
• SVr4
• 4.3BSD

like she predates most of us and she's still slaying. the longevity. 🔥

---

🎀 SEE ALSO 🎀

• string(3)
• strchr(3)
• wcsrchr(3)

go read strchr(3) first tho, like I said, that's where the return value lore lives. 🦋

---

okay bye ily, this was strrchr(3) from Linux man-pages 6.20, dated 2026-08-10 — read her, use her, respect her, strrchr ate and left no crumbs 💖✨🌈