C++-模板模式

#include <iostream>
using namespace std;

class TestPaper
{
public:
 void testquestion1()
 {
  cout<<"杨过得到，后来给了郭靖，连成了倚天剑、屠龙刀的玄铁可能是[] a. 球墨铸铁b.马口铁c.告诉合成刚d.碳素纤维"<<endl;
  cout<<"答案是";
  Answer1();
 }
 void testquestion2()
 {
  cout<<"杨过、程英、陆无双铲除了情花、造成[],a.使这种植物不在害人b.使一种珍稀物种灭绝c.破坏了那个生物圈的生态平衡d.造成该地区沙漠化"<<endl;
  cout<<"答案是";
  Answer2();
 }
protected:
 virtual void Answer1()=0;
 virtual void Answer2()=0; 
};

class TestPaperA : public TestPaper
{
 void  Answer1()
 {
  cout<<"a"<<endl;
 }
 void Answer2()
 {
  cout<<"b"<<endl;
 }
};

class TestPaperB: public TestPaper
{
 void Answer1()
 {
  cout<<"b"<<endl;
 }
 void Answer2()
 {
  cout<<"c"<<endl;
 }
};

int main()
{
 TestPaper* pa=new TestPaperA;
 TestPaper* pb=new TestPaperB;
 pa->testquestion1();
 pa->testquestion2();
 pb->testquestion1();
 pb->testquestion2();
}