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   strlen    ( 3 )

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Имя (Name)

strlen - calculate the length of a string

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Синопсис (Synopsis)

#include <string.h>

       size_t strlen(const char *s);

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Описание (Description)

The strlen() function calculates the length of the string pointed
       to by s, excluding the terminating null byte ('\0').

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Возвращаемое значение (Return value)

The strlen() function returns the number of bytes in the string
       pointed to by s.

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Атрибуты (Attributes)

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

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

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Стандарты (Conforming to)

POSIX.1-2001, POSIX.1-2008, C89, C99, C11, SVr4, 4.3BSD.

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Примечание (Note)

In cases where the input buffer may not contain a terminating
       null byte, strnlen(3) should be used instead.

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Смотри также (See also)

string(3), strnlen(3), wcslen(3), wcsnlen(3)

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