//7.1 #include
     
      using namespace std;class Total{    public:        Total(int i,int j){            cout<<"* constructor is called"<
      
       >m>>n;    A a(m,n);    B b(m,n);    C c(m,n);    cout<<"m + n =";    cout<
       
        <
       
      
     

//7.2 #include
     
      using namespace std;class vehicle{    public:        vehicle(int i,int j) : maxspeed(i) , weight(j){cout<<"vehicle's constructor is called"<
      
       >m>>n;    cout<<"please decide your motorcar's height and seatnum:"<
       
        >p>>q;    motorcycle mc(m,n,p,q);    system("pause");    mc.run();    system("pause");    mc.stop();    system("pause");    return 0;}
       
      
     

//7.3 代码大部分见上次fraction类

//main中添加代码    system("pause");        cout<<"about ifraction---------------"<
     
      >times2;    while(times2--){        int p,q;        cout<<"please make sure of the top and bottom of the fraction: "<
      
       >p>>q;        iFraction ifraction(p,q);        ifraction.legal();        convertF(ifraction);        ifraction.print();//iFraction类 class iFraction :public Fraction{    public:        iFraction(int n,int m):Fraction(n,m),wholepart(0),fractionparttop(0),fractionpartbottom(0){}        ~iFraction(){}        friend void convertF(iFraction &A);        void print();    private:        int wholepart;        int fractionparttop;        int fractionpartbottom;};//ifraction 实现 #include
       
        #include"ifraction.h"using namespace std;void convertF(iFraction &A){    int i;    i=A.top;    int j;    j=A.bottom;    if(i>0){        A.wholepart=i/j;        A.fractionparttop=i-A.wholepart*j;        A.fractionpartbottom=j;    }    if(i<0){        i=-1*i;        A.wholepart=i/j;        A.fractionparttop=i-A.wholepart*j;        A.fractionpartbottom=j;        A.wholepart=-1*A.wholepart;    }}void iFraction::print(){    if(wholepart!=0)        cout<
        
         <<" ("<
         
          <<"/"<
          
           <<")"<