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)
