NAME
strcspn —
span the complement of a
string
LIBRARY
library “libc”
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). In other words, it computes the string
array index in s of the first character of
s which is also in charset, else
the index of the first null character.
RETURN VALUES
The strcspn() function returns the number
of characters spanned.
SEE ALSO
memchr(3), strchr(3), strpbrk(3), strrchr(3), strsep(3), strspn(3), strstr(3), strtok(3)
STANDARDS
The strcspn() function conforms to
ISO/IEC 9899:1990
(“ISO C90”).