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)