NAME    [Toc]    [Back]

     strspn - span a string

SYNOPSIS    [Toc]    [Back]

     #include <string.h>

     size_t
     strspn(const char *s, const char *charset);

DESCRIPTION    [Toc]    [Back]

     The strspn() function spans the initial part  of  the  nullterminated
     string  s  as  long as the characters from s occur in string
charset.

RETURN VALUES    [Toc]    [Back]

     The strspn()  function  returns  the  number  of  characters
spanned.

EXAMPLES    [Toc]    [Back]

     The  following  call  to  strspn()  will return 3, since the
first three characters
 of string s are part of string charset:

           char *s = "foobar";
           char *charset = "of";
           size_t span;

           span = strspn(s, charset);

SEE ALSO    [Toc]    [Back]

     memchr(3), strchr(3),  strcspn(3),  strpbrk(3),  strrchr(3),
strsep(3),
     strstr(3), strtok(3)

STANDARDS    [Toc]    [Back]

     The  strspn()  function conforms to ANSI X3.159-1989 (``ANSI
C'').

OpenBSD     3.6                           June      29,      1991