STRSPN(3) manual page
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strspn, strcspn - get length of a prefix
substring
#include <string.h>
size_t strspn(const char *s, const char *accept);
size_t strcspn(const char *s, const char *reject);
The strspn()
function calculates the length (in bytes) of the initial segment of s which
consists entirely of bytes in accept.
The strcspn() function calculates
the length of the initial segment of s which consists entirely of bytes
not in reject.
The strspn() function returns the number of bytes
in the initial segment of s which consist only of bytes from accept.
The
strcspn() function returns the number of bytes in the initial segment of
s which are not in the string reject.
The
strspn() and strcspn() functions are thread-safe.
SVr4, 4.3BSD,
C89, C99.
index(3)
, memchr(3)
, rindex(3)
, strchr(3)
, string(3)
,
strpbrk(3)
, strsep(3)
, strstr(3)
, strtok(3)
, wcscspn(3)
, wcsspn(3)
This
page is part of release 3.78 of the Linux man-pages project. A description
of the project, information about reporting bugs, and the latest version
of this page, can be found at http://www.kernel.org/doc/man-pages/.
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