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.

Exceptions

May throw std::bad_alloc from the std::wstring constructor.

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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