Путеводитель по Руководству Linux

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   strchr    ( 3 )

найти символ в строке (locate character in string)

Имя (Name)

strchr, strrchr, strchrnul - locate character in string

Синопсис (Synopsis)

#include <string.h>

char *strchr(const char *s, int c); char *strrchr(const char *s, int c);

#define _GNU_SOURCE /* See feature_test_macros(7) */ #include <string.h>

char *strchrnul(const char *s, int c);


Описание (Description)

The strchr() function returns a pointer to the first occurrence
       of the character c in the string s.

The strrchr() function returns a pointer to the last occurrence of the character c in the string s.

The strchrnul() function is like strchr() except that if c is not found in s, then it returns a pointer to the null byte at the end of s, rather than NULL.

Here "character" means "byte"; these functions do not work with wide or multibyte characters.


Возвращаемое значение (Return value)

The strchr() and strrchr() functions return a pointer to the
       matched character or NULL if the character is not found.  The
       terminating null byte is considered part of the string, so that
       if c is specified as '\0', these functions return a pointer to
       the terminator.

The strchrnul() function returns a pointer to the matched character, or a pointer to the null byte at the end of s (i.e., s+strlen(s)) if the character is not found.


Версии (Versions)

strchrnul() first appeared in glibc in version 2.1.1.

Атрибуты (Attributes)

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

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


Стандарты (Conforming to)

strchr(), strrchr(): POSIX.1-2001, POSIX.1-2008, C89, C99, SVr4,
       4.3BSD.

strchrnul() is a GNU extension.


Смотри также (See also)

index(3), memchr(3), rindex(3), string(3), strlen(3), strpbrk(3),
       strsep(3), strspn(3), strstr(3), strtok(3), wcschr(3), wcsrchr(3)