闲着无聊的C++程序

#include<iostream>
#include<string>
using namespace std;
/***************饮料类的基本实现******************/
/****
	
	 Author：shen
	 Date：2019/01/19/22:13
		*/
class beverage {
private:
	int choice;
	double price_1;  //pepsi价格
	double price_2;
	double protein;//蛋白质含量
	double energy;//能量含量
	double  fat;//脂肪含量
	double sugar;//碳水化合物含量
	double saturated_fatty_acids;//饱和脂肪酸含量
	
protected:
	int stars = 0;
	string Name_beverage_1 = "Pepsi";
	string Name_beverage_2 = "七喜- 7 up";

public:

	beverage() {
		price_1 = 7.0; price_2 = 6.9; protein = 0.0; energy = 0.0; //构造函数 初始化各项数据
		fat = 0.0;	  sugar = 0.0; 
		saturated_fatty_acids = 0.0;
		cout << "欢迎使用饮料服务 请输入 1或 2来选择您所需要的饮料";
		cin >> choice;
	}

	void show_bever_Name();//显示饮料的名字
	void show_price();//显示饮料价格
	void show_basic_ingredient();//显示基本的成分
	double total_price(int num1,int num2);//求解饮料的总消费
	void server(int stars);

	~beverage() { std::cout << "欢迎光临饮料服务，请对本次服务进行点评。";
					std::cin >> stars;
					server(stars);
	};//析构函数
};
void  beverage::show_bever_Name() {
	if (choice == 1)
		cout << "你选择了" << Name_beverage_1<<"\n";
	else
		cout << "你选择了" << Name_beverage_2<<"\n";
}
void beverage::show_price() {
	if (choice == 1)cout << "Pepsi 的价格是 " << price_1<<"\n";
	else
		cout << "7 UP 的价格是" << price_2<<"\n";
}
void beverage::show_basic_ingredient() {
	if (choice == 1) {
		energy = 190;
		sugar = 11.2;
		cout << "Pepsi 营养成分表如下:\n";
	}
	else {
		cout << "7 up 营养成分表如下:\n";
		energy = 131;
		sugar = 7.7;
	}
	cout << "每100毫升\n";
	cout << "能量" << energy << "千焦\n";
	cout << "蛋白质" << protein << "克\n";
	cout<<"脂肪"<<fat<<"克\n";
	cout<<"碳水化合物"<<sugar<<"克\n";
	cout<<"饱和脂肪酸"<<saturated_fatty_acids<<"克\n";

}
double beverage:: total_price( int num1, int num2) {
	return price_1 * num1 + price_2 * num2;
}
void beverage:: server(int stars) {
	if (stars < 3)
		cout << "非常抱歉让您失望了\n";
	else
		cout << "谢谢您的支持\n";
}
int main() {

	beverage* b1 = new beverage();
	b1->show_bever_Name();
	b1->show_price();
	b1->show_basic_ingredient();
	system("pause");
}