Путеводитель по Руководству Linux

  User  |  Syst  |  Libr  |  Device  |  Files  |  Other  |  Admin  |  Head  |



   strspn    ( 3 )

получить длину префиксной подстроки (get length of a prefix substring)

Имя (Name)

strspn, strcspn - get length of a prefix substring

Синопсис (Synopsis)

#include <string.h>

size_t strspn(const char *s, const char *accept); size_t strcspn(const char *s, const char *reject);


Описание (Description)

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.


Возвращаемое значение (Return value)

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.


Атрибуты (Attributes)

For an explanation of the terms used in this section, see
       attributes(7).

┌──────────────────────────────────────┬───────────────┬─────────┐ │Interface Attribute Value │ ├──────────────────────────────────────┼───────────────┼─────────┤ │strspn(), strcspn() │ Thread safety │ MT-Safe │ └──────────────────────────────────────┴───────────────┴─────────┘


Стандарты (Conforming to)

POSIX.1-2001, POSIX.1-2008, C89, C99, SVr4, 4.3BSD.

Смотри также (See also)

index(3), memchr(3), rindex(3), strchr(3), string(3), strpbrk(3),
       strsep(3), strstr(3), strtok(3), wcscspn(3), wcsspn(3)