Thanks, Superman. And I wonder whether the keyword "register" is possible to be used to specify a register in the processor? :)

Hello, Could anyone tell me how to access the CPU register in C? Thanks

If you are using Visual Studio 2008, you may try #include "stdafx.h" #include using std::cout; using std::endl; class Test { public: Test() { } int GetValue() { return 2; } }; int main() { Test* test = new Test(); cout << test->GetValue() << endl; //test = NULL; delete test; cout << test->GetValue() << endl; system("pause"); return 0; } 1. add the "#include "stdafx.h"" before "include " 2. add the "using std::cout; using std::endl;"