STRSPN(3) Linux Programmer's Manual STRSPN(3)
NAME
strspn, strcspn - search a string(3,n) for a set(7,n,1 builtins) of characters
SYNOPSIS
#include <string.h>
size_t strspn(const char *s, const char *accept(2,8));
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(1,8) accept(2,8).
The strcspn() function calculates the length of the initial segment of
s which consists entirely of characters not in(1,8) reject.
RETURN VALUE
The strspn() function returns the number of characters in(1,8) the initial
segment of s which consist only of characters from accept(2,8).
The strcspn() function returns the number of characters in(1,8) the initial
segment of s which are not in(1,8) the string(3,n) 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)
1993-04-12 STRSPN(3)