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NAME | LIBRARY | SYNOPSIS | DESCRIPTION | RETURN VALUE | ATTRIBUTES | STANDARDS | HISTORY | SEE ALSO | COLOPHON |
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strchr(3) Library Functions Manual strchr(3)
strchr - string search character
Standard C library (libc, -lc)
#include <string.h>
char *strchr(const char *s, int c);
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'})
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.
For an explanation of the terms used in this section, see
attributes(7).
┌──────────────────────────────────────┬───────────────┬─────────┐
│ Interface │ Attribute │ Value │
├──────────────────────────────────────┼───────────────┼─────────┤
│ strchr() │ Thread safety │ MT-Safe │
└──────────────────────────────────────┴───────────────┴─────────┘
C11, POSIX.1-2008.
POSIX.1-2001, C89, SVr4, 4.3BSD.
memchr(3), string(3), strchrnul(3), strnul(3), strpbrk(3),
strrchr(3), strsep(3), strspn(3), strstr(3), wcschr(3),
This page is part of the man-pages (Linux kernel and C library
user-space interface documentation) project. Information about
the project can be found at
⟨https://www.kernel.org/doc/man-pages/⟩. If you have a bug report
for this manual page, see
⟨https://git.kernel.org/pub/scm/docs/man-pages/man-pages.git/tree/CONTRIBUTING⟩.
This page was obtained from the tarball man-pages-6.19.tar.gz
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⟨https://mirrors.edge.kernel.org/pub/linux/docs/man-pages/⟩ on
2026-09-09. If you discover any rendering problems in this HTML
version of the page, or you believe there is a better or more up-
to-date source for the page, or you have corrections or
improvements to the information in this COLOPHON (which is not
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man-pages@man7.org
Linux man-pages 6.19 2026-08-10 strchr(3)
Pages that refer to this page: index(3), strchrnul(3), string(3), strnul(3), strpbrk(3), strrchr(3), strspn(3), strstr(3), wcschr(3), signal-safety(7)
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HTML rendering created 2026-09-09 by Michael Kerrisk, author of The Linux Programming Interface. For details of in-depth Linux/UNIX system programming training courses that I teach, look here. Hosting by jambit GmbH. |
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