STRSPN Section: Linux Programmer's Manual (3) Updated: April 12, 2025 Index   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 NAME SYNOPSIS DESCRIPTION RETURN VALUE CONFORMING TO SEE ALSO This document was created by using the manual pages. Time: 11:58:06 GMT, March 24, 2025