#ifndef GRAPH_H

#define GRAPH_H

class Graph {

public:

    Graph(char ch, int n);

    void draw();

private:

    char symbol;

    int size;

};

#endif

#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, k;

    for (i = ;i < size;i++)

    {

        for (j = ;j < size -  - i;j++)

            cout << " ";

        for (k = ;k <  * i + ;k++)

            cout << symbol;

        cout << endl;

    }

}

#include <iostream>

#include "graph.h"

using namespace std;

int main() {

    Graph graph1('*', );

    graph1.draw();

    system("pause");

    Graph graph2('$', );

    graph2.draw();

    system("pause");

    return ;

}

#ifndef FRACTION_H

#define FRACTION_H

class Fraction {

public:

    Fraction(int t = , int b = ) : top(t), bottom(b) {

    }

    Fraction(const Fraction &fr) : top(fr.top), bottom(fr.bottom) {

    }

    void fractionadd(Fraction &f, Fraction &p);

    void fractionmin(Fraction &f, Fraction &p);

    void fractionmul(Fraction &f, Fraction &p);

    void fractiondiv(Fraction &f, Fraction &p);

    void fractioncom(Fraction &f, Fraction &p);

    void show();

private:

    int top;

    int bottom;

};

#endif // !FRACTION_H#pragma once

#include"fraction.h"

#include<iostream>

using namespace std;

void Fraction::show() {

    if (top == ) cout <<  << endl;

    else if (bottom == ) cout << top << endl;

    else if (top / bottom < ) cout << "-" << top << "/" << bottom << endl;

    else cout << top << "/" << bottom << endl;

}

void Fraction::fractionadd(Fraction &f, Fraction &p) {

    int t1, b1, t2, b2, m, n, temp, x, y, z;

    t1 = f.top;

    t2 = p.top;

    b1 = f.bottom;

    b2 = p.bottom;

    y = b1 * b2;

    x = t1 * b2 + t2 * b1;

    m = x;

    n = y;

    if (m < n)

    {

        temp = m;

        m = n;

        n = temp;

    }

    for (z = n;z >= ;z--)

    {

        if (x%z ==  && y%z == ) break;

    }

    x = x / z;

    y = y / z;

    cout << x << "/" << y << endl;

}

void Fraction::fractionmin(Fraction &f, Fraction &p) {

    int t1, t2, b1, b2, x, y, m, n, temp, z;

    t1 = f.top;

    t2 = p.top;

    b1 = f.bottom;

    b2 = p.bottom;

    y = b1 * b2;

    x = t1 * b2 - t2 * b1;

    m = x;

    n = y;

    if (m < n)

    {

        temp = m;

        m = n;

        n = temp;

    }

    for (z = n; z >= ; z--)

    {

        if (x%z ==  && y%z == ) break;

    }

    x = x / z;

    y = y / z;

    cout << x << "/" << y << endl;

}

void Fraction::fractionmul(Fraction &f, Fraction &p) {

    int t1, t2, b1, b2, x, y, m, n, temp, z;

    t1 = f.top;

    t2 = p.top;

    b1 = f.bottom;

    b2 = p.bottom;

    y = b1 * b2;

    x = t1 * t2;

    m = x;

    n = y;

    if (m < n)

    {

        temp = m;

        m = n;

        n = temp;

    }

    for (z = n; z >= ; z--)

    {

        if (x%z ==  && y%z == ) break;

    }

    x = x / z;

    y = y / z;

    cout << x << "/" << y << endl;

}

void Fraction::fractiondiv(Fraction &f, Fraction &p) {

    int t1, t2, b1, b2, x, y, m, n, temp, z;

    t1 = f.top;

    t2 = p.bottom;

    b1 = f.bottom;

    b2 = p.top;

    y = b1 * b2;

    x = t1 * t2;

    m = x;

    n = y;

    if (m < n)

    {

        temp = m;

        m = n;

        n = temp;

    }

    for (z = n; z >= ; z--)

    {

        if (x%z ==  && y%z == ) break;

    }

    x = x / z;

    y = y / z;

    cout << x << "/" << y << endl;

}

void Fraction::fractioncom(Fraction &f, Fraction &p) {

    int t1, t2, b1, b2, x, y;

    t1 = f.top;

    t2 = p.top;

    b1 = f.bottom;

    b2 = p.bottom;

    y = b1 * b2;

    x = t1 * b2 - t2 * b1;

    if (x < ) cout << f.top << "/" << f.bottom << "<" << p.top << "/" << p.bottom << endl;

    else if (x > ) cout << f.top << "/" << f.bottom << ">" << p.top << "/" << p.bottom << endl;

    else if (x == ) cout << f.top << "/" << f.bottom << "=" << p.top << "/" << p.bottom << endl;

}

#include"fraction.h"

#include<iostream>

using namespace std;

int main() {

    Fraction a;

    a.show();

    Fraction b(, );

    b.show();

    Fraction c();

    c.show();

    int x, y;

    cin >> x >> y;

    Fraction d(x, y);

    d.show();

    a.fractionadd(b, d);

    a.fractionmin(b, d);

    a.fractionmul(b, d);

    a.fractiondiv(b, d);

    a.fractioncom(b, d);

    system("pause");

}