这是《C／C++程序员实用大全》上面的源码

				#include 
				
				class One 
				{
				 public:
				  One(void) { cout 				};
				
				class Two 
				{
				 public:
				  Two(void) { cout 				};
				
				class Three 
				{
				 public:
				  Three(void) { cout 				};
				
				class Derived: public One, public Three, public Two 
				{
				 public:
				   Derived(void) : One(), Two(), Three() 
				   {
				     cout 				};
				
				void main(void)
				 {
				   Derived my_class;
				 }