实验3

#ifndef GRAPH_H
#define GRAPH_H

// 类Graph的声明 
class Graph {
    public:
        Graph(char ch, int n);   // 带有参数的构造函数 
        void draw();     // 绘制图形 
    private:
        char symbol;
        int size;
};


#endif

#include <iostream>
#include "graph.h"
using namespace std;

int main() {
    Graph graph1(‘*‘,5);
    graph1.draw();
    
    system("pause");
    system("cls");
    
    Graph graph2(‘$‘,7);
    graph2.draw();
    
    return 0; 
} 

#include "fraction.h"
#include <iostream>
using namespace std;


void Fraction::add(Fraction x,Fraction y){
    Fraction sum;
    sum.top=x.top*y.bottom+x.bottom*y.top;
    sum.bottom=x.bottom*y.bottom;
    cout<<"相加"<<sum.top<<"/"<<sum.bottom<<endl; 
}


void Fraction::min(Fraction x,Fraction y){
    Fraction min;
    min.top=x.top*y.bottom-y.top*x.bottom;
    min.bottom=x.bottom*y.bottom;
    cout<<"相减"<<min.top<<"/"<<min.bottom<<endl;
}


void mul(Fraction x,Fraction y){
    Fraction mul;
    mul.top=x.top*y.top;
    mul.bottom=x.bottom*y.bottom;
    cout<<"相乘"<<mul.top<<"/"<<mul.bottom<<endl;
}


void div(Fraction x,Fraction y){
    Fraction div;
    div.top=x.top*y.bottom;
    div.bottom=x.bottom*y.top;
    cout<<"相除"<<div.top<<"/"<<div.bottom<<endl;
}


void compare(Fraction x,Fraction y){
    if(x.bottom==y.bottom)
    {if(x.top>y.top)
         cout<<"比较"<<x.top<<"/"<<x.bottom<<">"<<y.top<<"/"<<y.bottom<<endl;
     else
         cout<<"比较"<<x.top<<"/"<<x.bottom<<"<"<<y.top<<"/"<<y.bottom<<endl;
    }
    else
    {x.bottom=x.bottom*y.bottom;
     x.top=x.top*y.bottom;
     y.bottom=x.bottom*y.bottom;
     y.top=y.top*x.bottom;
     if(x.top>b.top)
         cout<<"比较"<<x.top<<"/"<<x.bottom<<">"<<y.top<<"/"<<y.bottom<<endl;
     else
         cout<<"比较"<<x.top<<"/"<<x.bottom<<"<"<<y.top<<"/"<<y.bottom<<endl;
    }
}


void show(){
}

#ifndef FRACTION_H
#define FRACTION_H
class Fraction{
    public:
        Fraction(int top1=0,int bottom1=1):top(top1),bottom(bottom1) {
        }
        void add(Fraction x,Fraction y);
        void min(Fraction x,Fraction y);
        void mul(Fraction x,Fraction y);
        void div(Fraction x,Fraction y);
        void compare(Fraction x,Fraction y);
        void show();
    private:
        int top;
        int bottom;
};
#endif

#include <iostream>
#include "Fraction.h"
using namespace std;
int main() {
    Fraction a;
    a.show();
    Fraction b(3,4);
    b.show();
    Fraction c(5);
    b.show();
    Fraction example;
    example.add(b,c);
    example.min(b,c);
    example.mul(b,c);
    example.div(b,c);
    example.compare(b,c);
}