NAME
strspn —
span a string
LIBRARY
library “libc”
SYNOPSIS
#include
<string.h>
size_t
strspn(const
char *s, const char
*charset);
DESCRIPTION
Thestrspn()
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
ISO/IEC 9899:1990
(“ISO C90”).