valid fragment of this code in c++

what is valid form of this code in visual c++? this doe开发者_如何转开发s not work i took it from microsoft

using namespace System;
int main() {
   Console::WriteLine(__CLR_VER);
}

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I think this is a good standard C++ approximation:

#include <iostream>
int main() {
    std::cout << __cplusplus << std::endl;
}

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To print text on console you can use:

cout << _("This is my text") << endl;

or

_tprintf(_T("This is my text"));