Nevermind, I did it.
No. Visual C++ Express is free, but Visual Studio C++ must be bought. The Express edition is a subset of the Studio release.
XNA Game Studio 4.0
Yes.
The simple answer is yes, it works in both.
Once you have the Visual Studio program open, go to File->New Project and select the language you want to write your program in. If one or more languages do not appear, you probably didn't choose to have them installed when you installed Visual Studio.
3, 5, 5 does not make a right angle triangle but they can make an isosceles triangle Correct. Try 3,4,5. That will be a right triangle. 3x3 plus 4x4 = 5x5
Microsoft developed Visual C++.
The complete history of Visual C++ can be found in the "Visual C++" article in Wikipedia.
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Yes. Microsoft Visual C++ is the correct name, but it is often abbreviated to MSVC++ or just VC++. They are all the same.
No, M$ Windoze only.
Microsoft Visual C++ 6.0 was the 6th incarnation of Microsoft Visual C++ 32-bit, released in 1998. Other than supporting legacy Windows software there is no real need for it these days. It has been surpassed several times over by Microsoft Visual C++ 2010 with Microsoft Visual Studio 11 currently in beta as of April 2012.