摘要：
#include <iostream>using namespace std;class prototype{public: prototype(){cout<<"build prototype"<<endl;} virtual ~prototype(){cout<<"unbuild prototype"<<endl;} virtual prototype *clone()=0;};class subtype : public prototype{public: subtype(){cout&l 阅读全文
摘要：
#include <iostream>using namespace std;class buildcomputer{public: buildcomputer(){} virtual ~buildcomputer(){} virtual void buildmouse()=0; virtual void buildmointor()=0; virtual void buildkeyboard()=0; virtual void buildhost()=0;};class winbuildcomputer : public buildcomputer{pub... 阅读全文
摘要：
#define win 0#define mac 1#include <iostream>using namespace std;class button{public: button(){} virtual ~button(){} virtual void showbutton()=0;};class winbutton : public button{public: winbutton(){} virtual ~winbutton(){} void showbutton(){cout<<"win button"<<endl;}};cl 阅读全文
摘要：
#define win 0#define mac 1#include <iostream>using namespace std;class button{public: button(){} virtual ~button(){} virtual void showbutton()=0;};class winbutton : public button{public: winbutton(){} virtual ~winbutton(){} void showbutton(){cout<<"win button"<<endl;}};cl 阅读全文
摘要：
#define win 0#define mac 1#include <iostream>using namespace std;class button{public: button(){} virtual void createbutton()=0;};class macbutton : public button{public: macbutton(){} virtual void createbutton(){cout<<"macbutton"<<endl;}};class winbutton : public button{pu 阅读全文