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- std::basic_string
- std::basic_string<CharT,Traits,Allocator>::npos
- std::basic_string<CharT,Traits,Allocator>::at
- std::hash (std::string, std::wstring, std::u16string, std::u32string, std::pmr::string, std::pmr::wstring, std::pmr::u16string, std::pmr::u32string)
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- std::basic_string<CharT,Traits,Allocator>::begin, std::basic_string<CharT,Traits,Allocator>::cbegin
- std::basic_string<CharT,Traits,Allocator>::end, std::basic_string<CharT,Traits,Allocator>::cend
- std::basic_string<CharT,Traits,Allocator>::rbegin, std::basic_string<CharT,Traits,Allocator>::crbegin
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位置:首页 > C++ 参考手册 >字符串库 >std::basic_string > std::to_wstring
std::to_wstring
定义于头文件 <string>
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std::wstring to_wstring( int value ); |
(1) | (C++11 起) |
std::wstring to_wstring( long value ); |
(2) | (C++11 起) |
std::wstring to_wstring( long long value ); |
(3) | (C++11 起) |
std::wstring to_wstring( unsigned value ); |
(4) | (C++11 起) |
std::wstring to_wstring( unsigned long value ); |
(5) | (C++11 起) |
std::wstring to_wstring( unsigned long long value ); |
(6) | (C++11 起) |
std::wstring to_wstring( float value ); |
(7) | (C++11 起) |
std::wstring to_wstring( double value ); |
(8) | (C++11 起) |
std::wstring to_wstring( long double value ); |
(9) | (C++11 起) |
转换数值为 std::wstring 。
参数
value | - | 要转换的数值 |
返回值
保有转换后值的宽字符串
异常
可能从 std::wstring 的构造函数抛出 std::bad_alloc 。
示例
运行此代码
#include <string> #include <iostream> int main() { double f = 23.43; std::wstring f_str = std::to_wstring(f); std::wcout << f_str; }
输出:
23.430000
参阅
(C++11) |
转换整数或浮点值为 string (函数) |