c++实现重载分数的四则运算

秒速五厘米 2022-05-10 08:56 174阅读 0赞

#include<iostream>
    using namespace std;
    
    class Point
    {
    private:
    	int c_point;
    	int m_point;
    	char code;
    public:
    	Point()
    	{
    		code='/';
    	}
    	Point(int n1,int n2)
    	{
    		c_point=n1;
    		m_point=n2;
    		code='/';
    	}
    	void Output()
    	{
    		if(m_point==0)cout<<"error";
    		else
    			if(m_point==1)cout<<c_point;
    			else
    				cout<<"("<<c_point<<code<<m_point<<")";
    	}
    	int Big(int n1,int n2)          //最大公约数
    	{
    		int s=1;
    		int n=n1,m=n2;
    		while(s!=0)
    		{
    			s=n1%n2;
    			n1=n2;               
    			n2=s;
    		}
    		if(n1!=1&&n%n1==0&&m%n1==0)
    			return n1;
    		else
    			return 0;
    	}
    	//int Small_Multiple()
    	Point operator +(Point b)
    	{
    		Point c;
    		int n1,n2,s=1;
    		n1=m_point;
    		n2=b.m_point;
    		if(n1==n2)
    		{
    			c.c_point=c_point+b.c_point;
    			c.m_point=m_point=b.m_point;
    		}
    		else
    		{
    			while(s!=0)
    			{
    				s=n1%n2;
    				n1=n2;              
    				n2=s;
    			}
    			s=m_point*b.m_point/n1;         //最小公倍数
    			c.m_point=s;
    			c.c_point=c_point*(s/m_point)+b.c_point*(s/b.m_point);
    		}
    		int t;
    		t=Big(c.c_point,c.m_point);
    		while(t!=0)
    		{
    			c.c_point=c.c_point/t;
    			c.m_point=c.m_point/t;
    			t=Big(c.c_point,c.m_point);
    		}
    		return c;
    	}
    	Point operator -(Point b)
    	{
    		Point c;
    		int n1,n2,s=1;
    		n1=m_point;
    		n2=b.m_point;
    		if(n1==n2)
    		{
    			c.c_point=c_point-b.c_point;
    			c.m_point=m_point=b.m_point;
    		}
    		else
    		{
    			while(s!=0)
    			{
    				s=n1%n2;
    				n1=n2;               //最大公约数
    				n2=s;
    			}
    			s=m_point*b.m_point/n1;         //最小公倍数
    			c.m_point=s;
    			c.c_point=c_point*(s/m_point)-b.c_point*(s/b.m_point);
    		}
    		int t;
    		t=Big(c.c_point,c.m_point);
    		while(t!=0)
    		{
    			c.c_point=c.c_point/t;
    			c.m_point=c.m_point/t;
    			t=Big(c.c_point,c.m_point);
    		}
    		return c;
    	}
    	Point operator *(Point b)
    	{
    		Point c;
    		c.c_point=c_point*b.c_point;
    		c.m_point=m_point*b.m_point;
    		int t;
    		t=Big(c.c_point,c.m_point);
    		while(t!=0)
    		{
    			c.c_point=c.c_point/t;
    			c.m_point=c.m_point/t;
    			t=Big(c.c_point,c.m_point);
    		}
    		return c;
    	}
    	Point operator /(Point b)
    	{
    		Point c;
    		c.c_point=c_point*b.m_point;
    		c.m_point=m_point*b.c_point;
    		int t;
    		t=Big(c.c_point,c.m_point);
    		while(t!=0)
    		{
    			c.c_point=c.c_point/t;
    			c.m_point=c.m_point/t;
    			t=Big(c.c_point,c.m_point);
    		}
    		return c;
    	}
    };
    int main()
    {
    	int n1,n2,m1,m2;
    	//char a1,b1;
    	cout<<"请输入两个数的分子，分母分别为:";
    	//cin>>n1>>a1>>n2>>m1>>b1>>m2;
    	cin>>n1>>n2>>m1>>m2;
    	Point a(n1,n2),b(m1,m2);
    	cout<<"这两个分数为:";
    	a.Output();cout<<"   ";
    	b.Output();cout<<endl;
    	//本来想在这定义一个选择变量，选择是要进行那个运算符运算
    	a.Output();
    	cout<<"+";
    	b.Output();
    	cout<<"=";
    	Point c;
    	c=a+b;
    	c.Output();
    	cout<<endl;
    
    	a.Output();
    	cout<<"-";
    	b.Output();
    	cout<<"=";
    	c=a-b;
    	c.Output();
    	cout<<endl;
    
    	a.Output();
    	cout<<"*";
    	b.Output();
    	cout<<"=";
    	c=a*b;
    	c.Output();
    	cout<<endl;
    
    	a.Output();
    	cout<<"/";
    	b.Output();
    	cout<<"=";
    	c=a/b;
    	c.Output();
    	cout<<endl;
    	return 0;
    }