第十周、十一周项目

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*文件名称：test.cpp  *作   者：陈文浩 *完成日期：2016年6月5日  */问题及代码：阅读程序，写出执行结果（1）#include <iostream>using namespace std;class Data{public:    Data(int i):x(i){cout<<"A";}    ~Data(){ cout<<"B";}private:    int x;};class Base{public:    Base(int i):b1(i){cout<<"C";}    ~Base(){ cout<<"D";}private:    int b1;};class Derived:public Base{public:    Derived (int i,int j):Base(i),d1(j){        cout<<"E";    }    ~Derived(){cout<<"F";}private:    Data d1;};int main(){    Derived obj(1,2);    return 0;}

[cpp] view plain copy print?在CODE上查看代码片派生到我的代码片#include <iostream>  using namespace std;  class A  {  public:      A(){a=0;}      A (int i){a=i;}      void print(){cout<<a<<"  ";}  private:      int a;  };  class B: public A  {  public:      B(){b=0;}      B(int i, int j, int k): A(i),aa(j){b=k;}      //思考：这3处出现的print，有何区别      void print()      //(1)      {          A::print();   //(2)          aa.print();   //(3)          cout<<b<<endl;      }  private:      int b;      A aa;  };  int main()  {      B test[2];      test[0]=B(1,4,7);      test[1]=B(2,5,8);      for(int i=0; i<2; i++)          test[i].print();      return 0;  }

[cpp] view plain copy print?在CODE上查看代码片派生到我的代码片#include <iostream>  using namespace std;  class A  {  public:      A(char *s){cout<<s<<endl;}  };  class B:public A  {  public:      B(char *s1, char *s2):A(s1){          cout<<s2<<endl;      }  };  class C:public A  {  public:      C(char *s1,char *s2):A(s1){          cout<<s2<<endl;      }  };  class D:public B, C  {  public:      D(char *s1,char *s2,char *s3,char *s4):          B(s1,s2),C(s3,s4){cout<<s4<<endl;}  };  int main()  {      D d("class A","class B","class C","class D");      return 0;  }

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