STRCHR(3) Linux Programmer's Manual STRCHR(3)

NAME
       strchr, strrchr, strchrnul - locate character in string

SYNOPSIS
       #include 

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

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

       #define GNUSOURCE         /* See featuretestmacros(7) */
       #include 

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

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

       The strrchr() function returns a pointer to the last occurrence of  the
       character c in the string s.

       The strchrnul() function is like strchr() except that if c is not found
       in s, then it returns a pointer to the null  byte  at  the  end  of  s,
       rather than NULL.

       Here "character" means "byte"; these functions do not work with wide or
       multibyte characters.

RETURN VALUE
       The strchr() and strrchr() functions return 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', these functions return a pointer to the terminator.

       The strchrnul() function returns a pointer to the matched character, or
       a pointer to the null byte at the end of s (i.e., s+strlen(s))  if  the
       character is not found.

VERSIONS
       strchrnul() first appeared in glibc in version 2.1.1.

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

       ┌─────────────────────────────────┬───────────────┬─────────┐
       │Interface                        │ Attribute     │ Value   │
       ├─────────────────────────────────┼───────────────┼─────────┤
       │strchr(), strrchr(), strchrnul() │ Thread safety │ MT-Safe │
       └─────────────────────────────────┴───────────────┴─────────┘
CONFORMING TO
       strchr() and strrchr() are in SVr4, 4.3BSD, C89, C99.  strchrnul() is a
       GNU extension.

SEE ALSO
       index(3),   memchr(3),  rindex(3),  string(3),  strlen(3),  strpbrk(3),
       strsep(3), strspn(3), strstr(3), strtok(3), wcschr(3), wcsrchr(3)

COLOPHON
       This page is part of release 3.53 of the Linux  man-pages  project.   A
       description  of  the project, and information about reporting bugs, can
       be found at http://www.kernel.org/doc/man-pages/.



GNU                               2012-04-24                         STRCHR(3)