第一題

//bass.h
//基類 
//point
class point{
    public:
        void setm( double numbm)
        {
            m=numbm;
        }
        void setn( double numbn)
        {
            n=numbn;
        }
        double displayadd()
        {
            cout<<"m+n="<<m+n;
        }
    protected:
        
 
double m;
        double n;
};
 
//派生類A     A芯片：計算兩位整數的加法(m+n)、計算兩位整數的減法(m-n) 
class A: public point{
    public:
        double displaysub()
        {
            cout<<"m-n="<<m-n;
        }
} ;

//派生類B    B 芯片：計算兩位整數的加法(m+n)、計算兩位整數的乘法(m*n) 
class B: public point{
    public:
        double
 
 displaymul()
        {
            cout<<"m*n="<<m*n;
        }
};

//派生類C    C 芯片：計算兩位整數的加法(m+n)、計算兩位整數的除法(m/n)  
class C: public point{
    public:
        double displaydiv()
        {
            cout<<"m/n="<<m/n;
        }
};


//main
#include<iostream>
#include"bass.h"
 

using namespace std;

int main()
{
    double m, n;
    cout<<"m= ";
    cin>>m;
    cout<<"n= ";
    cin>>n;
    cout<<endl;
    
    //A
    cout<<"A芯片"<<endl;
    A calculateA;
    calculateA.setm(m);
    calculateA.setn(n);
    calculateA.displayadd();
    cout<<endl;
    calculateA.displaysub();
    cout<<endl<<endl;
    
    //B
    cout<<"B芯片"<<endl;
    B calculateB;
    calculateB.setm(m);
    calculateB.setn(n);
    calculateB.displayadd();
    cout<<endl;
    calculateB.displaymul();
    cout<<endl<<endl;
    
    //C
    cout<<"C芯片"<<endl;
    C calculateC;
    calculateC.setm(m);
    calculateC.setn(n);
    calculateC.displayadd();
    cout<<endl;
    calculateC.displaydiv();
    
    return 0;
}

第二題

//vehicle.h
class vehicle{
    public:
        vehicle(int setmaxs, int setwei)
        {
            maxspeed = setmaxs;
            weight = setwei;
        }
        
        void run();
        void stop();
    protected:
        int    maxspeed;
        int weight;
};

//bicycle類  新增數據成員高度（height）
class bicycle : virtual public vehicle{
    public:
        bicycle(int setmaxs, int setwei, int sethei):vehicle(setmaxs, setwei), height(sethei){
        }
    protected:
        int height;
};

//motorcar類    新增數據成員座位數（seatnum）
class motorcar : virtual public vehicle{
    public:
        motorcar(int setmaxs, int setwei, int setsea):vehicle(setmaxs, setwei), seatnum(setsea){
        }
    protected:
        int seatnum;
};

//從 bicycle 和 motorcar 派生出摩托車（motorcycle）類
class motorcycle : virtual public bicycle, virtual public motorcar{
    public:
        motorcycle(int setmaxs, int setwei, int sethei, int setsea):
        motorcar(setmaxs, setwei, setsea),
        bicycle(setmaxs, setwei, sethei),
        vehicle(setmaxs, setwei) {}
};

//show.cpp
#include<iostream>
#include"vehicle.h"
using namespace std;
void vehicle::run()
{
    cout<<"run"<<endl;
}
void vehicle::stop()
{
    cout<<"stop"<<endl;
}

//main
#include<iostream>
#include"show.cpp"
using namespace std;
int main()
{
motorcycle motor(1,1,1,1);
motor.run();
motor.stop();
return 0;
}

運行後很糟糕的失敗了，這種錯誤我還檢查不出來

由多個類派生出來的motorcycle對值的操作不是很懂，在問過舍友後也還是不怎麽懂，希望有更簡單清晰的告解。

實驗六