/* 范例：20-4 */
#include <iostream.h>
enum C{aa,bb,cc};
class B
{
    public:
      void bb(){C objc(3); cout << "B::C::cc " << objc.cc << "\n";} 
               	// ?class or enum
      class C
      {
        public:
          int cc;
          C(int cc){cc=cc;} 	// ?cc = ?cc
      };
    B(int bb){cc=bb;} 	// ? cc
  private:
    int cc; 	// 2
};

void main()
{
  C cc;    	// ?C
  B objb(2);

  objb.bb();
  cout << typeid(cc).name() << "\n";

  getchar();
}

程序執行結果：
B::C::cc 6684156
C