第三次上机实验

 

 

2.图形

#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; 
} 

#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

// 类graph的实现
 
#include "graph.h" 
#include <iostream>
using namespace std;

// 带参数的构造函数的实现 
Graph::Graph(char ch, int n): symbol(ch), size(n) {
}


// 成员函数draw()的实现
// 功能：绘制size行，显示字符为symbol的指定图形样式 
void Graph::draw() {
    int i,j;
    for(i=0;i<size;i++)
    {
        for(j=1;j<=size+i;j++)
        {
            if(j<size-i)
            {
                printf(" ");
            }
            else
            {
            printf("%c",symbol); 
            }
        }
        printf("\n");
    }
}

 

 

 

 

 

 

3.分数计算

#include <iostream>
#include "未命名4.h"
using namespace std;

int main()
{
    int j,k,l,m;
    cin>>j>>k>>l>>m;
    fs a(j,k);
    fs b(l,m);
    count c(a,b);
    c.add();
    c.mul();
    c.del();
    c.divi();
    c.bj();
}

#ifndef GRAPH_H
#define GRAPH_H


#include<iostream>
using namespace std;
class fs
{
    public :
        fs(int a=0,int b=1)
        {
        x=a;
        y=b;
        }
        int x,y;
    private:
        
}; 
class count
{
    public :
        count(fs p3,fs p4)
        {
            p1=p3;
            p2=p4;
        }
        count(count &l);
        int add();
        int del();
        int mul();
        int divi();
        int bj();
        fs p1,p2;
    private :

};


#endif

#include "未命名4.h" 
#include <iostream>
using namespace std;
int count::add()
{
    int i=0,j=0;
    i=(p1.x*p2.y+p2.x*p1.y);
    j=p2.y*p1.y;
    if(i==0)
    {
        j=0;
    }
    cout<<i<<"/"<<j<<endl;
}
int count::del()
{
    int i=0,j=0;
    

    i=(p1.x*p2.y-p2.x*p1.y);
    j=p2.y*p1.y;
    
    if(i==0)
    {
        j=0;
    }
    cout<<i<<"/"<<j<<endl;
}
int count ::mul()
{
    int i=0,j=0;
    i=(p1.x*p2.x);
    j=(p1.y*p2.y);
    if(i==0||j==0)
    {
        j=0;
        i=0;
    }
    cout<<i<<"/"<<j<<endl;
}
int count ::divi()
{
    int i=0,j=0;
    i=(p1.y*p2.x);
    j=(p1.x*p2.y);
    if(i==0||j==0)
    {
        j=0;
        i=0;
    }
    cout<<i<<"/"<<j<<endl;
}
int count::bj()
{
    if(p1.x*p2.y>p1.y*p2.x)
    {
        cout<<p1.x<<"/"<<p1.y<<">"<<p2.x<<"/"<<p2.y;
    }
    else if(p1.x*p2.y<p1.y*p2.x)
    {
        cout<<p1.x<<"/"<<p1.y<<"<"<<p2.x<<"/"<<p2.y;
    }
    else
    {
         cout<<p1.x<<"/"<<p1.y<<"="<<p2.x<<"/"<<p2.y;
    } 
}