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std::to_wstring

Defined in header <string>
std::wstring to_wstring( int value );
(1) (since C++11)
std::wstring to_wstring( long value );
(2) (since C++11)
std::wstring to_wstring( long long value );
(3) (since C++11)
std::wstring to_wstring( unsigned value );
(4) (since C++11)
std::wstring to_wstring( unsigned long value );
(5) (since C++11)
std::wstring to_wstring( unsigned long long value );
(6) (since C++11)
std::wstring to_wstring( float value );
(7) (since C++11)
std::wstring to_wstring( double value );
(8) (since C++11)
std::wstring to_wstring( long double value );
(9) (since C++11)

Converts a numeric value to std::wstring.

1) Converts a signed decimal integer to a wide string with the same content as what std::swprintf(buf, sz, L"%d", value) would produce for sufficiently large buf.
2) Converts a signed decimal integer to a wide string with the same content as what std::swprintf(buf, sz, L"%ld", value) would produce for sufficiently large buf..
3) Converts a signed decimal integer to a wide string with the same content as what std::swprintf(buf, sz, L"%lld", value) would produce for sufficiently large buf.
4) Converts an unsigned decimal integer to a wide string with the same content as what std::swprintf(buf, sz, L"%u", value) would produce for sufficiently large buf.
5) Converts an unsigned decimal integer to a wide string with the same content as what std::swprintf(buf, sz, L"%lu", value) would produce for sufficiently large buf.
6) Converts an unsigned decimal integer to a wide string with the same content as what std::swprintf(buf, sz, L"%llu", value) would produce for sufficiently large buf.
7,8) Converts a floating point value to a wide string with the same content as what std::swprintf(buf, sz, L"%f", value) would produce for sufficiently large buf.
9) Converts a floating point value to a wide string with the same content as what std::swprintf(buf, sz, L"%Lf", value) would produce for sufficiently large buf.

Parameters

value - a numeric value to convert

Return value

a wide string holding the converted value.

Example

#include <string>
#include <iostream>
 
int main() {
    double f = 23.43;        
    std::wstring f_str = std::to_wstring(f);
    std::wcout << f_str;
}

Output:

23.430000

See also

(C++11)
converts an integral or floating point value to string
(function)

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http://en.cppreference.com/w/cpp/string/basic_string/to_wstring