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   strchr    ( 3 )

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Имя (Name)

strchr, strrchr, strchrnul - locate character in string

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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);

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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.

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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.

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Версии (Versions)

strchrnul() first appeared in glibc in version 2.1.1.

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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 │
       └──────────────────────────────────────┴───────────────┴─────────┘

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Стандарты (Conforming to)

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

       strchrnul() is a GNU extension.

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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)

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