wstring usage

[wolverine]

Hi
Could any one tell me how to compile the code using wstring with
g++ or gcc. I am using gcc version 3.4.2

#include<iostream>
#include<string>
using namespace std;

int main()
{
std::wstring str("ABC");
return 0;
}

This is the error message i got when i compiled the code

g++ program.cpp
wstring.cpp:7: no matching function for call to
`std::basic_string<wchar_t,

::basic_string(const

char[4])'


Thanks in Advance
Kiran Pradeep

 

[Pete Becker]

std::wstring str("ABC");

std::wstring str(L"ABC");

This is the error message i got when i compiled the code

g++ program.cpp
wstring.cpp:7: no matching function for call to
`std::basic_string<wchar_t,

::basic_string(const

char[4])'

There's no wstring constructor that takes narrow characters. Doing that
would require mapping the narrow characters to wide, which requires a
locale. basic_string doesn't deal in locales, so for wstring you have to
pass in wide characters.

--

-- Pete

Author of "The Standard C++ Library Extensions: a Tutorial and
Reference." For more information about this book, see
www.petebecker.com/tr1book.

 

[Kai-Uwe Bux]

#include<iostream>
#include<string>
using namespace std;

int main()
{
std::wstring str("ABC");

Try:

std::wstring str(L"ABC");

return 0;

BTW: return 0; is redundant here.

}

Best

Kai-Uwe Bux