1

#include
     
      using namespace std;class chip{    protected:        int m;        int n;        double result;    public:        chip(int a,int b,int c=0):m(a),n(b),result(c){}        void addition(){            cout<
      
       <<"+"<
       
        <<"=";            result=m+n;            cout<
        
         <
        
       
      
     

2

#include
     
      using namespace std;class vehicle{    protected:        int maxspeed;        int weight;    public:        vehicle(int a,int b):maxspeed(a),weight(b){ }        void run(){            cout<<"run"<
     

 运行失败。。不知道为什么

3

fraction.h

#ifndef FRACTION_H#define FRACTION_Hclass fraction{public:    fraction(int a, int b);    fraction(int a);    fraction();    ~fraction();    fraction operator+(const fraction &f1);    fraction operator-(const fraction &f1);    fraction operator*(const fraction &f1);    fraction operator/(const fraction &f1);    void compare(fraction &f1);    void input();    void output();protected:    int top;    int bottom;};#endif

 fraction.cpp

#include"fraction.h"#include
     
      #include
      
       using namespace std;Fraction Fraction::operator+(const Fraction &f1){    return Fraction(top*f1.bottom+f1.top*bottom,f1.bottom*bottom);}Fraction Fraction::operator-(const Fraction &f1){    return Fraction(top*f1.bottom-f1.top*bottom,bottom*f1.bottom);}Fraction Fraction::operator*(const Fraction &f1){    return Fraction(top*f1.top,bottom*f1.bottom);  }Fraction Fraction::operator/(const Fraction &f1){    return Fraction(top*f1.bottom,bottom*f1.top);}void Fraction::output(){    int t,x,y;    if(abs(top)>abs(bottom))        t=abs(bottom);    else        t=abs(top);    for(int i=1;i
      
     

后面不会了。。