std::wmemmove
STD:Wmemmove
Defined in header | | |
---|---|---|
wchar_t* wmemmove( wchar_t* dest, const wchar_t* src, std::size_t count | | |
精确复制count
所指向的宽字符数组中的连续宽字符。src
指向的宽字符数组dest
...
如果count
等于零,函数什么也不做。
数组可能会重叠:复制就像宽字符被复制到临时宽字符数组中一样,然后从临时数组复制到dest
...
参数
dest | - | pointer to the wide character array to copy to |
---|---|---|
src | - | pointer to the wide character array to copy from |
count | - | number of wide characters to copy |
返回值
返回dest
...
注记
此函数不区分区域设置,也不注意wchar_t
它复制的对象:NULL以及无效字符也被复制。
例
二次
#include <iostream>
#include <cwchar>
#include <locale>
#include <clocale>
int main()
{
std::setlocale(LC_ALL, "en_US.utf8"
std::wcout.imbue(std::locale("en_US.utf8")
wchar_t str[] = L"αβγδεζηθικλμνξοπρστυφχψω";
std::wcout << str << '\n';
std::wmemmove(str+4, str+3, 3 // copy from [δεζ] to [εζη]
std::wcout << str << '\n';
}
二次
可能的产出:
二次
αβγδεζηθικλμνξοπρστυφχψω
αβγδδεζθικλμνξοπρστυφχψω
二次
另见
wmemcpy | copies a certain amount of wide characters between two non-overlapping arrays (function) |
---|---|
memmove | moves one buffer to another (function) |
copycopy_if (C++11) | copies a range of elements to a new location (function template) |
copy_backward | copies a range of elements in backwards order (function template) |
C.wmemmove的文档
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