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NAME

       strspn, strcspn - search a string for a set of characters

SYNOPSIS

       #include <string.h>

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

       size_t strcspn(const char *s, const char *reject);

DESCRIPTION

       The strspn() function calculates the length of the initial segment of s
       which consists entirely of characters in accept.

       The strcspn() function calculates the length of the initial segment  of
       s which consists entirely of characters not in reject.

RETURN VALUE

       The  strspn()  function returns the number of characters in the initial
       segment of s which consist only of characters from accept.

       The strcspn() function returns the number of characters in the  initial
       segment of s which are not in the string reject.

CONFORMING TO

       SVID 3, POSIX, BSD 4.3, ISO 9899

SEE ALSO

       index(3),   memchr(3),  rindex(3),  strchr(3),  strpbrk(3),  strsep(3),
       strstr(3), strtok(3)

                                April 12, 1993                       STRSPN(3)