strspn(3) - NetBSD Manual Pages

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STRSPN(3)               NetBSD 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 char-
     acters 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'').

NetBSD 10.1                     August 11, 2002                    NetBSD 10.1