实验4

#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 
//       size和symbol是类Graph的私有成员数据 
void Graph::draw() {
    // 补足代码，实现「实验4.pdf」文档中展示的图形样式 
    int i, j, k;
    for (i = 1; i <= size; i++)
    {
        for (j = (size + 1) / 2; j >= 1; j--)
        {
            cout << " " << endl;
        }
        for (k = 1; k = i; k++)
        {
            cout << symbol;
        }
        cout << endl;
    }
}

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


int main() {
    Graph graph1('*',5), graph2('$',7) ;  // 定义Graph类对象graph1, graph2 
    graph1.draw(); // 通过对象graph1调用公共接口draw()在屏幕上绘制图形 
    graph2.draw(); // 通过对象graph2调用公共接口draw()在屏幕上绘制图形
    
    return 0; 
} 

 

#ifndef FRACTION_H_INCLUDED
#define FRACTION_H_INCLUDED
#pragma once
class Fraction {
public:
    Fraction();
    Fraction(int t, int b);
    Fraction(int t);
    void show(); 
    void add(Fraction &f1);//加
    void sub(Fraction &f1);//减
    void mul(Fraction &f1);//乘
    void div(Fraction &f1);//除
    void compare(Fraction f1, Fraction f2);//比较
private:
    int top; int bottom;
};

fraction.h

#include<iostream>
#include"Fraction.h"
using namespace std;
int main() {
    Fraction f1;
    Fraction f2(2);
    Fraction f3(2, 4);
    Fraction f4(-3, 4);
    Fraction f5(3, -4);
    Fraction f6(-3, -4);
    f1.show(); f2.show(); f3.show(); f4.show(); f5.show(); f6.show();//不同形式的分数显示
    f3.sub(f4); f3.add(f4); f5.mul(f6); f5.div(f6);   //分数的加减乘除
    f1.compare(f2, f4);  //分数比较
    return 0;
}

F

#include<iostream>
#include"Fraction.h"
using namespace std;
int sim(int t, int j) {    //sim函数，功能为找出分子与分母的最大公约数
    int a, b, i, m, c, n;
    a = t; b = j;
    if (a >= b)m = b;
    else m = a;
    for (i = 1; i <= m; i++)
    {
        if (a%i == 0 && b%i == 0)c = i;
    }
    return c;
}
Fraction::Fraction() { 
    top = 0; bottom = 1;
}
Fraction::Fraction(int t, int b) {
    top = t; bottom = b;
}
Fraction::Fraction(int t) {
    top = t; bottom = 1;
}
void Fraction::add(Fraction &f1) {   //加法add函数的实现
    Fraction f2;
    f2.top = top * f1.bottom + f1.top*bottom;
    f2.bottom = bottom * f1.bottom;
    f2.show();
}
void Fraction::sub(Fraction &f1) {    //减法sub函数的实现
    Fraction f2;
    f2.top = top * f1.bottom - f1.top*bottom;
    f2.bottom = bottom * f1.bottom;
    f2.show();
}
void Fraction::mul(Fraction &f1) {    //乘法mul函数的实现
    Fraction f2;
    f2.top = top * f1.top;
    f2.bottom = bottom * f1.bottom;
    f2.show();
}
void Fraction::div(Fraction &f1) {    //除法div函数的实现
    Fraction f2;
    f2.top = top * f1.bottom;
    f2.bottom = bottom * f1.top;
    f2.show();
}
void Fraction::show() {               //show函数的实现
    if (top > 0 && bottom > 0) {
        int c;
        c = sim(top, bottom);
        cout << top / c << "/" << bottom / c << endl;//化简
    }
    if (top < 0 && bottom>0) {
        int c; c = sim(-top, bottom);
        cout << top / c << "/" << bottom / c << endl;//化简
    }
    if (top > 0 && bottom < 0) {
        int c; c = sim(top, -bottom);
        cout << -top / c << "/" << -bottom / c << endl;//将分母的负号移动至分子上
    }
    if (top < 0 && bottom < 0) {
        int c; c = sim(-top, -bottom);
        cout << -top / c << "/" << -bottom / c << endl;//分子分母同为负数时去除负号
    }
    if (top == 0) cout << top << "/" << bottom << endl;
}
void Fraction::compare(Fraction f1, Fraction f2) {    //分数比较compare函数的实现
    float a = float(f1.top) / float(f1.bottom); float b = float(f2.top) / float(f2.bottom);
    if (a <= b) { cout << f1.top << "/" << f1.bottom << "<="; f2.show(); cout << endl; }
    if (a > b) { cout << f1.top << "/" << f1.bottom << ">"; f2.show(); cout << endl; }
}

fraction.cpp

raction.cpp

 

不知道问题出在哪里。。。询问了@buluguy也没有解决