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 <iostream>
#include <string>
int main()
{
for (const double f : { 23.43, 1e-9, 1e40, 1e-40, 123456789. }) {
std::wcout << "std::wcout: " << f << '\n'
<< "to_wstring: " << std::to_wstring(f) << "\n\n";
}
}
Output:
std::wcout: 23.43 to_wstring: 23.430000 std::wcout: 1e-09 to_wstring: 0.000000 std::wcout: 1e+40 to_wstring: 10000000000000000303786028427003666890752.000000 std::wcout: 1e-40 to_wstring: 0.000000 std::wcout: 1.23457e+08 to_wstring: 123456789.000000
See also
|
(C++11)
|
converts an integral or floating point value to string (function) |
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