I don't know if theres anyone on HAN that knows much C++ or anything.

I'm working on a final project. My partner and I are making a calculator. I'm doing the dialog and hes doing most of the functions. The functions are using namespace STD while my dialog is using a namespace that Visual Studio made. I'm making my dialog with Windows Forms.
What I need to do is pass System::string to std::string and then std::string to system::string. Is this possible? Can anyone shed some light on this or toss out some code snippets?