编写购物车结算程序（C++）

Posted 2022-08-03 7TribeZ

问题描述

#include<iostream>
#include<string>
using namespace std;

class Commodity

public:
	Commodity(string name, double price, double num)
	
		this->name = name;
		this->price = price;
		this->num = num;
	
	Commodity()
	
		name = "";
		price = 0.0;
		num = 0.0;
	
	Commodity(Commodity&a)
	
		this->name = a.name;
		this->price = a.price;
		this->num = a.num;
	

	double getprice()
	
		return price;
	
	void printInfo()
	

		cout << name << "," << price << "," << num << endl;
	

private:
	string name;
	double price;
	double num;

;
class Cart

public:
	int i = 0;

	Cart() 

	void addItem(Commodity & a)
	
		item[i] = a;
		i++;
	
	void checkout()
	
		double sum = 0;
		for (int i = 0; i<5; i++)
		
			sum += item[i].getprice();
		
		cout << "您需要支付" << sum << "元." << endl;
	
	void printInvoice()
	
		for (int i = 0; i<5; i++)
		
			item[i].printInfo();
		

	
private:
	Commodity item[20];
;
int main()

	Commodity tShirt("T shirt", 79, 2);
	Commodity suit("suit", 1099, 1);
	Commodity hat("hat", 129, 3);
	Commodity tv("tv set", 4899, 1);
	Commodity ac("air condition", 5280, 1);

	Cart myCart;
	myCart.addItem(tShirt);
	myCart.addItem(suit);
	myCart.addItem(hat);
	myCart.addItem(tv);
	myCart.addItem(ac);

	myCart.checkout();
	myCart.printInvoice();
	system("pause");
	return 0;

顺带一提，我之前都用codeblocks编的，然后这个程序用codeblock编结果不对，然后用vs编译结果对了。之后有空再去找一下原因吧。我可能要转移到vs编cpp了。