сравнить часть двух строк (compare part of two strings)
Пролог (Prolog)
This manual page is part of the POSIX Programmer's Manual. The
Linux implementation of this interface may differ (consult the
corresponding Linux manual page for details of Linux behavior),
or the interface may not be implemented on Linux.
Имя (Name)
strncmp — compare part of two strings
Синопсис (Synopsis)
#include <string.h>
int strncmp(const char *s1, const char *s2, size_t n);
Описание (Description)
The functionality described on this reference page is aligned
with the ISO C standard. Any conflict between the requirements
described here and the ISO C standard is unintentional. This
volume of POSIX.1‐2017 defers to the ISO C standard.
The strncmp() function shall compare not more than n bytes (bytes
that follow a NUL character are not compared) from the array
pointed to by s1 to the array pointed to by s2.
The sign of a non-zero return value is determined by the sign of
the difference between the values of the first pair of bytes
(both interpreted as type unsigned char) that differ in the
strings being compared.
Возвращаемое значение (Return value)
Upon successful completion, strncmp() shall return an integer
greater than, equal to, or less than 0, if the possibly null-
terminated array pointed to by s1 is greater than, equal to, or
less than the possibly null-terminated array pointed to by s2
respectively.
Ошибки (Error)
No errors are defined.
The following sections are informative.
Примеры (Examples)
None.
Использование в приложениях (Application usage)
None.
Обоснование (Rationale)
None.
Будущие направления (Future directions)
None.
Смотри также (See also)
strcmp(3p)
The Base Definitions volume of POSIX.1‐2017, string.h(0p)
