STRSPN(3) BSD Programmer's Manual STRSPN(3)NAMEstrspn - span a string
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 char-
acters of string s are part of string charset:
char *s = "foobar";
char *charset = "of";
size_t span;
span = strspn(s, charset);
SEE ALSOmemchr(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 C").
MirOS BSD #10-current June 29, 1991 1