strchr(3)

strchr3

String search character

Usage

#include <string.h>

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

Library

Standard C library (libc, -lc)

Overview

strchr() returns a pointer to the first occurrence of the character c in the string s.

It is equivalent to both of the following expressions:

memchr(s, c, strlen(s) + 1)
strpbrk(s, (char [2]){c, '\0'})

Return value

strchr() returns a pointer to the matched character or NULL if the character is not found.

The terminating null byte is considered part of the string, so that if c is specified as '\0', strchr() returns a pointer to the terminator.

Attributes

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

InterfaceAttributeValue
strchr()Thread safetyMT-Safe

Releases

19 releases since Debian 1.1 (Buzz); the text changed 13 times.

  1. 1.1–2.2
  2. 3.0
  3. 3.1
  4. 4.0
  5. 5.0
  6. 6.0
  7. 7
  8. 8
  9. 9
  10. 10
  11. 11
  12. 12
  13. 13
  14. Arch

Standards

C11, POSIX.1-2008.

History

POSIX.1-2001, C89, SVr4, 4.3BSD.

From man-pages 6.19-1 in Arch Linux 2026-11-01. Parsed by carta from the page's man source.