NAME

strcspn − span the complement of a string

SYNOPSIS

#include <string.h> size_t
strcspn(s, charset)
char ∗s;
char ∗charset;

DESCRIPTION

The strcspn() 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 C X3.159-1989 (“ANSI C”). 

4.4 Berkeley Distribution  —  January 12, 1996