Visual Studio 2017 : vc15
Visual Studio 版本的判断:
1. MSVC++ 4.x _MSC_VER == 1000
2. MSVC++ 5.0 _MSC_VER == 1100
3. MSVC++ 6.0 _MSC_VER == 1200
4. MSVC++ 7.0 _MSC_VER == 1300
5. MSVC++ 7.1 _MSC_VER == 1310 (Visual Studio 2003)
6. MSVC++ 8.0 _MSC_VER == 1400 (Visual Studio 2005)
7. MSVC++ 9.0 _MSC_VER == 1500 (Visual Studio 2008)
8. MSVC++ 10.0 _MSC_VER == 1600 (Visual Studio 2010)
9. MSVC++ 11.0 _MSC_VER == 1700 (Visual Studio 2012)
10. MSVC++ 12.0 _MSC_VER == 1800 (Visual Studio 2013)
11. MSVC++ 14.0 _MSC_VER == 1900 (Visual Studio 2015)
12. MSVC++ 14.1 _MSC_VER == 1911 (Visual Studio 2017)
