实验六zxt

Q1:芯片问题

思路：basic做父类，ABC做子类

#include<iostream>
using namespace std;
class basic{
	public:
	   basic(int,int);
	   int mm(){return m;}
	   int nn(){return n;}//提供了m,n的外部接口 
	   void add();
	private:
	   int m,n; 	
}; 
//basic类为芯片ABC的最基本功能，即m+n 
basic::basic(int mx,int nx)
{m=mx;n=nx;} //构造函数的实现
void basic::add()
{cout<<"m+n="<<mm()+nn()<<endl;}
//basic已经完成，开始芯片A
class A:public basic{
    public:
    	A(int a,int b):basic(a,b){}; 
    	void sub();
};
void A::sub()
{cout<<"m-n="<<mm()-nn()<<endl;} 
class B:public basic{
	public:
		B(int a,int b):basic(a,b){};
		void mul();
}; 
void B::mul()
{cout<<"m*n="<<mm()*nn()<<endl;}
class C:public basic{
	public:
		C(int a,int b):basic(a,b){};
		void div();
}; 
void C::div()
{cout<<"m/n="<<(float)mm()/nn()<<endl;}  
//芯片ABC都已经设计好
int main()
{
    basic ba(2,3);
    ba.add();
    A a(3,4);
    a.sub();
    a.add();
    B b(2,1);
    b.add();
    b.mul();
    C c(7,8);
    c.div();
    c.add();
	return 0; 
} 

　　运行截图：

Q2:车类

思路：合理的应用虚基类

#include<iostream>
using namespace std;
class vehicle
{
	public:
		void run();
		void stop();
		vehicle(int a,int b)
	{
		    maxspeed=a;weight=b;
		} 
		~vehicle(){}
	private:
		int maxspeed;
		int weight;
};
void vehicle::run(){cout<<"vehicle is running"<<endl;}
void vehicle::stop(){cout<<"vehicle has stopped"<<endl;}
class bicycle:virtual public vehicle
{
	public:
		void run();
		void stop();//同名覆盖 
		bicycle(int a,int b,int c):vehicle(a,b)
		{
		  height=c;
		}
		~bicycle(){}
	private:
		int height;
};
void bicycle::run(){cout<<"bicycle is running"<<endl;}
void bicycle::stop(){cout<<"bicycle has stopped"<<endl;} 
class motorcar:virtual public vehicle
{
	public:
		void run();
		void stop();
		motorcar(int a,int b,int c):vehicle(a,b)
		{
		    seatnum=c;
		}
		~motorcar(){}
	private:
		int seatnum;
};
void motorcar::run(){cout<<"motorcar is running"<<endl;}
void motorcar::stop(){cout<<"motorcar has stopped"<<endl;}
class motorcycle:public motorcar,public bicycle
{
    public:
    	void run();
    	void stop();
    	motorcycle(int a,int b,int c,int d):vehicle(a,b),bicycle(a,b,c),motorcar(a,b,d)
		{}
    	~motorcycle(){}
};
void motorcycle::run(){cout<<"motorcycle is running"<<endl;}
void motorcycle::stop(){cout<<"motorcycle has stopped"<<endl;}
int main()
{
	vehicle v(1,2);
	v.run();
	v.stop();
	bicycle b(1,2,3);
	b.run();
	b.stop();
	motorcar m(1,2,3);
	m.run();
	m.stop();
	motorcycle mo(1,2,3,4);
	mo.run();
	mo.stop();
	return 0;
}

　　运行截图：

Q3:fraction类

思路：友元函数，我这道题有问题...我的基础不扎实...这我得承认...

#include<iostream>
using namespace std;
class fraction
{
	public:
		int tt(){return top;}
		int bb(){return bottom;} 
		fraction operator+(fraction& f2);
		fraction operator-(fraction& f2);
		fraction operator*(fraction& f2);
		fraction operator/(fraction& f2);
		fraction(int a,int b):top(a),bottom(b){}
		friend void convertF();
	private:
		int top,bottom;
};
fraction fraction::operator+(fraction& f2)
	return fraction(top+f2.top,bottom+f2.bottom);
fraction fraction::operator-(fraction& f2)
	return fraction(top-f2.top,bottom-f2.bottom);
fraction fraction::operator*(fraction& f2)
	return fraction(top*f2.top,bottom*f2.bottom);
fraction fraction::operator/(fraction& f2)
	return fraction(top*f2.bottom,bottom*f2.top);
void convertF()
	{
		int k=top>bottom?top:bottom;
		for(int i=k;i>=2;i--)
		{
			if(top%i==0&&bottom%i==0)
			{
				top=top/i;
				bottom=bottom/i; 
			} 
			break;
		}
		cout<<top/bottom<<endl;
	}
	//构造完毕，yeah
class ifraction:public fraction
{
	public:
		ifraction(int a,int b,int c):fraction(b,c){num=c;}
		friend void display();
		friend void convertf();
	private:
		int num;
}; 
void ifraction::convertf()
	{
		int t=tt(),b=bb();
		int m=t%b;
		t=t-m*b;
		int k=t>b?t:b;
		for(int i=k;i>=2;i--)
		{
			if(t%i==0&&b%i==0)
			{
				t=t/i;
				b=b/i; 
			} 
			break;
		}
		cout<<m<<"+"<<t/b<<endl;
	}
void display()
{cout<<num<<"+"<<top/bottom<<endl;}
int main()
{
	fraction f(2,4),f1(1,2),f3(0,0);
	f3=f1+f2;
    cout<<f3.top<<"/"<<f3.bottom<<endl; 
	f3=f1-f2;
	cout<<f3.top<<"/"<<f3.bottom<<endl; 
	f3=f1*f2;
	cout<<f3.top<<"/"<<f3.bottom<<endl; 
	f3=f1/f2;
	cout<<f3.top<<"/"<<f3.bottom<<endl; 
	return 0;
}