NAME
strcspn —
span the complement of a
string
SYNOPSIS
#include
<string.h>
size_t
strcspn(const
char *s, const char
*charset);
DESCRIPTION
Thestrcspn()
function spans the initial part of the null-terminated string
s as long as the characters from s
do not occur in string charset (it spans the
complement
of charset).
RETURN VALUES
The strcspn() function returns the number
of characters spanned.
SEE ALSO
index(3), memchr(3), rindex(3), strchr(3), strpbrk(3), strrchr(3), strsep(3), strspn(3), strstr(3), strtok(3)
STANDARDS
The strcspn() function conforms to
ANSI X3.159-1989
(“ANSI C89”).