netbsd man page for strspn

STRSPN(3)						   BSD Library Functions Manual 						 STRSPN(3)

NAME
     strspn -- span a string

LIBRARY
     Standard C Library (libc, -lc)

SYNOPSIS
     #include <string.h>

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

DESCRIPTION
     The strspn() function spans the initial part of the nul-terminated string s as long as the characters from s occur in string charset.

RETURN VALUES
     The strspn() function returns the number of characters spanned.

EXAMPLES
     The following call to strspn() will return 3, since the first three characters of string s are part of string charset:

	   char *s = "foobar";
	   char *charset = "of";
	   size_t span;

	   span = strspn(s, charset);

SEE ALSO
     index(3), memchr(3), rindex(3), strchr(3), strcspn(3), strpbrk(3), strrchr(3), strsep(3), strstr(3), strtok(3)

STANDARDS
     The strspn() function conforms to ANSI X3.159-1989 (``ANSI C89'').

BSD
								  August 11, 2002							       BSD