sellwatermelon.cpp

只是一个简单的源程序。虽然不是太好

//王婆卖瓜原程序
#include <iostream.h>
//水果类的声明及实现
class fruit
{
	static int Tnumber,Rnumber;//静态数据成员
	static double Weight;
public:
	void totalweight(double weig)//重量
	{
		Weight+=weig;
		cout<<"至今所卖的总重量是："<<Weight<<endl;
	}
	void totalnumber(int num)//卖的数量
	{
		Tnumber+=num;
		cout<<"至今所卖的总个数是："<<Tnumber<<endl;
	}
	void returnnumber(int num)//退的数量
	{
		Rnumber+=num;
		cout<<"至今所退的个数是："<<Rnumber<<endl;
	}
};

int fruit::Tnumber=0;//静态数据成员初始化
int fruit::Rnumber=0;
double fruit::Weight=0;

void main()
{
	fruit Xigua;
	char Input;
	int Snumber,Renumber;
	double weight;
	cout<<"Sell or Return:"<<endl;
	cin>>Input;
	while (Input=='s' || Input=='r')//给用户提供很好的需求  利用循环来实现
	{
		if(Input=='s')
		{
			cout<<"Input sellnumber:"<<endl;
			cin>>Snumber;
			cout<<"Input weight:"<<endl;
			cin>>weight;
			Xigua.totalnumber(Snumber);
			Xigua.totalweight(weight);
			Xigua.returnnumber(0);
            cout<<"Sell or Return:"<<endl;
			cin>>Input;
		}
		else
		{
			cout<<"input Return number"<<endl;
			cin>>Renumber;
			Xigua.returnnumber(Renumber);
			Xigua.totalnumber(0);
			Xigua.totalweight(0);
			cout<<"Sell or Return:"<<endl;
			cin>>Input;
		}

	}
}