1.xinpian.h

#include
     
      using namespace std;class xinpian{    public:        xinpian(float M,float N);        void jia();    private:        int m,n;};//基类 class xinpianA:public xinpian{    public:        xinpianA(float M,float N);        void jian();    private:        int m,n;};//派生类A class xinpianB:public xinpian{    public:        xinpianB(float M,float N);        void chen();    private:        int m,n;};//派生类B class xinpianC:public xinpian{    public:        xinpianC(float M,float N);        void chu();    private:        int m,n;};//派生类C
     

xinpian.cpp

#include
     
      #include"xinpian.h"using namespace std;xinpian::xinpian(float M,float N):m(M),n(N){}void xinpian::jia(){    cout<
      
       <
      
     

main.cpp

#include 
     
      #include"xinpian.h"using namespace std;int main() {    xinpianA A(4,2);    A.jia();    A.jian();    xinpianB B(4,2);    B.jia();    B.chen();    xinpianC C(4,2);    C.jia();    C.chu();    return 0;}
     

2.vehicle.h

#include
     
      using namespace std;class vehicle{    public:        vehicle(int m,int n);        void run();        void stop();        ~vehicle(){}    private:        int maxspeed,weight;};class bicycle:virtual public vehicle{    public:        bicycle(int m,int n,float s);        ~bicycle(){}    private:        float height;};class motorcar:virtual public vehicle{    public:        motorcar(int m,int n,int t);        ~motorcar(){}    private:        int seatnum;};class motorcycle:public bicycle,public motorcar{    public:    motorcycle(int m,int n,float s,int t);    ~motorcycle(){}};
     

vehicle.cpp

#include"vehicle.h"#include
     
      using namespace std;vehicle::vehicle(int m,int n):maxspeed(m),weight(n){    cout<<"maxspeed"<
      
       <
      
     

main.cpp

#include 
     
      #include"vehicle.h"using namespace std;int main() {    motorcycle A(1,2,3,4);    A.run();    A.stop();    return 0;}
     

 3.

Fraction.h

using namespace std;class Fraction{    public:        Fraction(int t=0,int b=1);        void show();         Fraction operator+(Fraction &a);         Fraction operator-(Fraction &a);         Fraction operator*(Fraction &a);         Fraction operator/(Fraction &a);        int top,bot;};class iFraction:public Fraction{    public:        iFraction(int t,int b);        void show();        int top,bot;};

fraction.cpp

#include
     
      #include"fraction.h"using namespace std;Fraction::Fraction(int t,int b):top(t),bot(b){}void Fraction::show(){    cout<
      
       <<"/"<
       
        <
       
      
     

main.cpp

#include 
     
      #include"fraction.h"using namespace std;int main() {    iFraction A(6,5);    A.show();    Fraction B(3,2),C(4,3);    Fraction D;    D=B+C;    D.show();        return 0;}