STRSPN(3)

NAME
strspn - span a string

LIBRARY
libc

SYNOPSIS
#include <string.h>
size_t
strspn(const char *s, const char *charset);

DESCRIPTION
The strspn() function spans the initial part of the null-terminated string s as long as the characters from s occur in the null-terminated string charset. In other words, it computes the string array index in s of the first character of s which is not in charset, else the index of the first null character.

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

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

STANDARDS
The strspn() function conforms to isoC.