习题4

完成程序：药品物资管理

要求：

1.利用结构体来存储目前拥有的药物的名称、种类、数量、买入价格、卖出价格。

2.利用枚举来设置药物的种类（回复mp和回复hp）。

3.编写函数来控制药物的买入和卖出，卖出价为买入价格的3/4。

4.编写函数来显示拥有的药物的剩余钱数。

5.通过输入数字来控制函数调用。

6.实现分离式编译。

 

//drug.h

#pragma once
#ifndef DRUG_H_
#define DRUG_H_
#include <string>

using namespace std;

enum Type {PlusHP,PlusMP};

struct Drug
{
	string name;
	Type type;
	int count;
	float buyPrice;
	float sellPrice;
};

const float ratio = 0.75f;
constexpr float sellPrice(Drug &d) { return d.buyPrice*ratio; }

void buyDrug(Drug &d, float& money, int num);
void sellDrug(Drug &d, float&money, int num);
void display(const Drug &d1, const Drug &d2, const float money);
string showType(const Drug &d);

#endif // !DRUG_H_

//drug.cpp

#include "pch.h"
#include "drug.h"
#include <iostream>

void buyDrug(Drug &d, float& money, int num)
{
	if (money > d.buyPrice * num)
	{
		money -= d.buyPrice*num;
		d.count += num;
		cout << "购买成功！" << endl;
	}
	else
	{
		cout << "警告：拥有的钱不足够购买" << num << "个药品！！！" << endl;
	}
}

void sellDrug(Drug &d, float&money, int num)
{
	if (d.count >= num)
	{
		d.count -= num;
		money += d.sellPrice * num;
		cout << "卖出成功！" << endl;
	}
	else
	{
		cout << "警告：没有" << num << "个药物可以售卖！！！" << endl;
	}
}

void display(const Drug &d1, const Drug &d2, const float money)
{
	cout << "目前拥有的药物：" << endl;
	cout << "1：名称：" << d1.name << "  数量：" << d1.count << "  种类：" << showType(d1) << "  购入价格：" << d1.buyPrice << "  卖出价格：" << d1.sellPrice << endl;
	cout << "1：名称：" << d2.name << "  数量：" << d2.count << "  种类：" << showType(d2) << "  购入价格：" << d2.buyPrice << "  卖出价格：" << d2.sellPrice << endl;
	cout << "拥有钱数：" << money << endl;
	cout << "显示完成！" << endl;
}

string showType(const Drug &d)
{
	switch (d.type)
	{
	case 0:
		return "PlusHP";
		break;
	case 1:
		return "PlusMP";
		break;
	default:
		break;
	}
}

//习题4.cpp

#include "pch.h"
#include "drug.h"
#include <iostream>

int main()
{
	Drug mpDrug = { "回魔药水",PlusMP,10,150,sellPrice(mpDrug) };
	Drug hpDrug = { "回血药水",PlusHP,20,100,sellPrice(hpDrug) };
	float totalMoney = 1000;

	cout << "1：购买回血药品 / 2：购买回魔药品 / 3：卖出回血药品 / 4：卖出回魔药品 / 5：输出目前拥有的药水和金钱 / 6：退出" << endl;
	cout << "请输入操作：" << endl;
	int input = 0;
	int num = 0;
	while (cin >> input && input > 0 && input < 6)
	{
		if (input == 1)
		{
			cout << "请输入购买数量：" << endl;
			if (cin >> num && num > 0)
			{
				buyDrug(hpDrug, totalMoney, num);
				cout << "请继续输入操作：" << endl;
			}
			else
			{
				cout << "输入错误，请重新输入：" << endl;
			}
		}
		else if (input == 2)
		{
			cout << "请输入购买数量：" << endl;
			if (cin >> num && num > 0)
			{
				buyDrug(mpDrug, totalMoney, num);
				cout << "请继续输入操作：" << endl;
			}
			else
			{
				cout << "输入错误，请重新输入：" << endl;
			}
		}
		else if (input == 3)
		{
			cout << "请输入卖出数量：" << endl;
			if (cin >> num && num > 0)
			{
				sellDrug(hpDrug, totalMoney, num);
				cout << "请继续输入操作：" << endl;
			}
			else
			{
				cout << "输入错误，请重新输入：" << endl;
			}
		}
		else if (input == 4)
		{
			cout << "请输入卖出数量：" << endl;
			if (cin >> num && num > 0)
			{
				sellDrug(mpDrug, totalMoney, num);
				cout << "请继续输入操作：" << endl;
			}
			else
			{
				cout << "输入错误，请重新输入：" << endl;
			}
		}
		else
		{
			display(hpDrug, mpDrug, totalMoney);
			cout << "请继续输入操作：" << endl;
		}
	}
	
	return 0;
}

 

 

 

 

 

//自写：

//Medicine.h

#pragma once
#ifndef MEDICINE_H_
#define MEDICINE_H_
#include <iostream>
#include <string>

using namespace std;

enum Sort :short
{
	PlusHP=0,
	PlusMP=1
};

struct Medicine
{
	string name;
	int count; 
	Sort sort;
	float buying_price;
	float selling_price;
};

void BuyMedicine(Medicine& med, float& money);
void SellMedicine(Medicine& med, float& money);
void DisplayAllMedicineAndMoney(Medicine med1,Medicine med2, const float money);

#endif // !MEDICINE_H_

//Medicine.cpp

#include"pch.h"
#include "Medicine.h"

void BuyMedicine(Medicine& med, float& money)
{
	int buyCount;
	cout << "请输入购买数量：" << endl;
	cin >> buyCount;

	float totalPrice = buyCount * med.buying_price;
	if (totalPrice < money && buyCount > 0)
	{
		money -= totalPrice;
		med.count += buyCount;
		cout << "购买成功！" << endl;
	}
	else
	{
		cout << "购买失败" << endl;
	}
}

void SellMedicine(Medicine& med, float& money)
{
	int sellCount;
	cout << "请输入卖出数量：" << endl;
	cin >> sellCount;

	if (med.count >= sellCount && sellCount > 0)
	{
		money += sellCount * med.selling_price;
		med.count -= sellCount;
		cout << "卖出成功！" << endl;
	}
	else
	{
		cout << "卖出失败" << endl;
	}
}

void DisplayAllMedicineAndMoney(Medicine med1, Medicine med2, const float money)
{
	cout << "目前拥有的药品：" << endl;
	cout << "1：名称：" << med1.name << "  数量：" << med1.count << "  种类：" << (med1.sort == 0 ? "PlusHP" : "PlusMP") << "  购入价格：" << med1.buying_price << "  卖出价格：" << med1.selling_price << endl;
	cout << "2：名称：" << med2.name << "  数量：" << med2.count << "  种类：" << (med2.sort == 1 ? "PlusMP" : "PlusHP") << "  购入价格：" << med2.buying_price << "  卖出价格：" << med2.selling_price << endl;
	cout << "拥有钱数：" << money << endl;
	cout << "显示完成！" << endl;
}

//习题4.cpp

#include "pch.h"
#include "Medicine.h"

int main()
{
	Medicine HP_Return = { "回血药水",20,PlusHP,100,75 };
	Medicine MP_Return = { "回魔药水",10,PlusMP,150,112.5 };
	float money = 1000.0f;

	cout << "1.购买回血药品 / 2.购买回魔药品 / 3.卖出回血药品 / 4.卖出回魔药品 / 5.输出目前拥有的药水和金钱 / 6.退出" << endl;
	bool isContinue = true;
	int inputNum;
	while (isContinue)
	{
		cout << "请输入操作：" << endl;
		cin >> inputNum;
		switch (inputNum)
		{
		case 1:
			BuyMedicine(HP_Return, money);
			break;
		case 2:
			BuyMedicine(MP_Return, money);
			break;
		case 3:
			SellMedicine(HP_Return, money);
			break;
		case 4:
			SellMedicine(MP_Return, money);
			break;
		case 5:
			DisplayAllMedicineAndMoney(HP_Return, MP_Return, money);
			break;
		case 6:
			isContinue = false;
			break;
		default:
			break;
		}
	}
}