STRSPN(3) Linux Programmer's Manual STRSPN(3)NAME
strspn, strcspn - get length of a prefix substring
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 (in bytes) of the initial
segment of s which consists entirely of bytes in accept.
The strcspn() function calculates the length of the initial segment of
s which consists entirely of bytes not in reject.
RETURN VALUE
The strspn() function returns the number of bytes in the initial seg‐
ment of s which consist only of bytes from accept.
The strcspn() function returns the number of bytes in the initial seg‐
ment of s which are not in the string reject.
CONFORMING TO
SVr4, 4.3BSD, C89, C99.
SEE ALSOindex(3), memchr(3), rindex(3), strchr(3), string(3), strpbrk(3),
strsep(3), strstr(3), strtok(3), wcscspn(3), wcsspn(3)COLOPHON
This page is part of release 3.58 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/.
2013-12-30 STRSPN(3)