Copyright (c) 1990 The Regents of the University of California.
All rights reserved.

This code is derived from software contributed to Berkeley by
Chris Torek.

%sccs.include.redist.man%

@(#)strcspn.3 5.1 (Berkeley) 05/15/90

C 7 strcspn - span the complement of a string

#include <string.h>

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

Strcspn spans the initial part of the null-terminated string s as long as the characters from s do not occur in string charset (i.e., strcspn spans the complement of charset ). Strcspn returns the number of characters spanned. index(3), memchr(3), rindex(3), strchr(3), strpbrk(3), strrchr(3), strsep(3), strspn(3), strstr(3), strtok(3) Strcspn conforms to ANSI X3.159-1989 (``ANSI C'').