/* 范例：20-8 */
#include <iostream.h>

enum C{aa,bb,cc};
class B
{
  public:
    void bb(){C objc(3); cout << "B::C::cc " << objc.cc << "\n";}
            	// C=>class C
    class C
    {
      public:
        int cc;
        C(int cc){cc=cc;} 
        // 傳入cc指定給局部cc(同一個cc)=>成員cc未改變(隨機數(shù))
    };
    B(int bb){cc=bb;} 	// B成員cc=bb
  private:
    int cc; 	// 2
};

void main()
{
  C cc;    	// C為全局enum
  B objb(2); 	// => cc=2

  objb.bb();	// => objc(3) => B::C::cc => 輸出隨機數(shù)
  cout << typeid(cc).name() << "\n";  // (enum) C

  getchar();
}

程序執(zhí)行結果：
B::C::cc 6684156
C