一、题目名称：模拟肯德基收银系统
二、题目内容：
同学们应该都去麦当劳或肯德基吃过快餐吧？请同学们参考肯德基官网的信息模拟肯德基快餐店的收银系统，合理使用C++或Java或Python结合设计模式（2种以上）至少实现系统的以下功能：
1.正常餐品结算和找零。
2.基本套餐结算和找零。
3.使用优惠劵购买餐品结算和找零。
4.可在一定时间段参与店内活动（自行设计或参考官网信息）。
5.模拟打印小票的功能（写到文件中）。
基本要求：
1.程序设计风格良好，控制台界面友好，最多两人一组完成任务。
2.实现功能测试代码，确保程序的健壮性。
3.画出使用的设计模式图。
提高要求：
1.实现可视化界面（使用MFC）。
2.实现会员储值卡功能，完成储值卡消费。
实现当天营业额和餐品销量计算和统计，用数据库记录。
三、算法设计：
四、代码
1.点餐系统代码
#include<iostream>
#include<string>
#include<fstream>
using namespace std;
class Food
{
protected:
string name;
double price;
int num;
public:
virtual double get_sum()
{
double sum = price * num;
return sum;
}
virtual void set_name(string name)
{
this->name = name;
}
virtual string get_name()
{
return name;
}
virtual void set_price(double price)
{
this->price = price;
}
virtual double get_price()
{
return price;
}
virtual void set_num(int num)
{
this->num = num;
}
virtual int get_num()
{
return num;
}
};
class Hamburger :public Food
{
public:
virtual double get_sum()
{
double sum = price * num;
return sum;
}
};
class Snack :public Food
{
public:
virtual double get_sum()
{
double sum = price * num;
return sum;
}
};
class Drink :public Food
{
public:
virtual double get_sum()
{
double sum = price * num;
return sum;
}
};
class Set :public Food
{
public:
virtual double get_sum()
{
double sum = price * num;
return sum;
}
};
class Factory
{
public:
virtual Food* food() = 0;
};
class Factory_Hamburger :public Factory
{
public:
Food* food()
{
return new Hamburger;
}
};
class Factory_Snack :public Factory
{
public:
Food* food()
{
return new Snack;
}
};
class Factory_Drink :public Factory
{
public:
Food* food()
{
return new Drink;
}
};
class Factory_Set :public Factory
{
public:
Food* food()
{
return new Set;
}
};
class xiaopiao
{
public:
virtual void output() = 0;
} ;
class H1 : public xiaopiao
{
public:
void get_num(int n)
{
num = n;
}
void output()
{
if(0 != num)
{
ofstream outfile("receipt.dat", ios::out);
cout << "巨无霸--" << num << "份" <<endl;
outfile << "巨无霸--" << num << "份" << endl;
outfile.close();
}
}
protected:
int num;
};
class H2 : public xiaopiao
{
public:
void get_num(int n)
{
num = n;
}
void output()
{
if(0 != num)
{
ofstream outfile("receipt.dat", ios::out);
cout << "双层吉士汉堡--" << num << "份" <<endl;
outfile << "双层吉士汉堡--" << num << "份" << endl;
outfile.close();
}
}
protected:
int num;
};
class H3 : public xiaopiao
{
public:
void get_num(int n)
{
num = n;
}
void output()
{
if(0 != num)
{
ofstream outfile("receipt.dat", ios::out);
cout << "麦辣鸡腿汉堡--" << num << "份" <<endl;
outfile << "麦辣鸡腿汉堡--" << num << "份" << endl;
outfile.close();
}
}
protected:
int num;
};
class S1 : public xiaopiao
{
public:
void get_num(int n)
{
num = n;
}
void output()
{
if(0 != num)
{
ofstream outfile("receipt.dat", ios::out);
cout << "大薯条--" << num << "份" <<endl;
outfile << "大薯条--" << num << "份" << endl;
outfile.close();
}
}
protected:
int num;
};
class S2 : public xiaopiao
{
public:
void get_num(int n)
{
num = n;
}
void output()
{
if(0 != num)
{
ofstream outfile("receipt.dat", ios::out);
cout << "麦乐鸡--" << num << "份" <<endl;
outfile << "麦乐鸡--" << num << "份" << endl;
outfile.close();
}
}
protected:
int num;
};
class D1 : public xiaopiao
{
public:
void get_num(int n)
{
num = n;
}
void output()
{
if(0 != num)
{
ofstream outfile("receipt.dat", ios::out);
cout << "可口可乐--" << num << "份" <<endl;
outfile << "可口可乐--" << num << "份" << endl;
outfile.close();
}
}
protected:
int num;
};
class D2 : public xiaopiao
{
public:
void get_num(int n)
{
num = n;
}
void output()
{
if(0 != num)
{
ofstream outfile("receipt.dat", ios::out);
cout << "七喜--" << num << "份" <<endl;
outfile << "七喜--" << num << "份" << endl;
outfile.close();
}
}
protected:
int num;
};
class D3 : public xiaopiao
{
public:
void get_num(int n)
{
num = n;
}
void output()
{
if(0 != num)
{
ofstream outfile("receipt.dat", ios::out);
cout << "橙汁--" << num << "份" <<endl;
outfile << "橙汁--" << num << "份" << endl;
outfile.close();
}
}
protected:
int num;
};
class SET1 : public xiaopiao
{
public:
void get_num(int n)
{
num = n;
}
void output()
{
if(0 != num)
{
ofstream outfile("receipt.dat", ios::out);
cout << "巨无霸超值套餐--" << num << "份" <<endl;
outfile << "巨无霸超值套餐--" << num << "份" << endl;
outfile.close();
}
}
protected:
int num;
};
class SET2 : public xiaopiao
{
public:
void get_num(int n)
{
num = n;
}
void output()
{
if(0 != num)
{
ofstream outfile("receipt.dat", ios::out);
cout << "双层吉士汉堡超值套餐--" << 1 << "份" <<endl;
outfile << "双层吉士汉堡超值套餐--" << 1 << "份" << endl;
outfile.close();
}
}
protected:
int num;
};
//运用策略模式简化
class Context
{
public:
Context(xiaopiao *p) : pStrategy(p)
{
}
void Interface()
{
pStrategy->output();
}
private:
xiaopiao *pStrategy;
};
class collect
{
private:
public:
void main_menu()
{
cout << "---------------------" << endl;
cout << "欢迎进入肯德基点餐系统！" << endl;
cout << "---------------------" << endl;
cout << "请问你选择单点(1)或者套餐(2)：" << endl;
}
void single_menu()
{
cout << "---------------------" << endl;
cout << "请选择您要点的产品: " << endl;
cout << "主食: " << endl;
cout << " 1.巨无霸 --17元 " << endl;
cout << " 2.双层吉士汉堡--15元 " << endl;
cout << " 3.麦辣鸡腿汉堡--15元 " << endl;
cout << "配餐: " << endl;
cout << " 4.大薯条 --11元 " << endl;
cout << " 5.麦乐鸡 --9元 " << endl;
cout << "饮料: " << endl;
cout << " 6.可口可乐 --7元 " << endl;
cout << " 7.七喜 --7元 " << endl;
cout << " 8.橙汁 --10元 " << endl;
cout << "若点餐结束，请输入0以结束点餐！" << endl;
}
void set_menu()
{
cout << "---------------------" << endl;
cout << "请选择您要点的套餐: " << endl;
cout << " 1.巨无霸超值套餐 --25元" << endl;
cout << " （包含巨无霸一份、大薯条一份、可口可乐一份）" << endl;
cout << " 2.双层吉士汉堡超值套餐 --23元" << endl;
cout << " （包含双层吉士汉堡一份、大薯条一份、可口可乐一份）" << endl;
cout << "若点餐结束，请输入0以结束点餐！" << endl;
}
void menu()
{
main_menu();
int choose;
int hamburger[3], snack[2], drink[3],set[2];
for (int i = 0; i < 3; i++) { hamburger[i] = 0; drink[i] = 0; }
for (int i = 0; i < 2; i++) { snack[i] = 0; set[i] = 0; }
cin >> choose;
if (1 == choose)
{
single_menu();
int ch,flag=1;
while(flag)
{
cout << "请输入对应商品的序号:" ;
cin >> ch;
switch (ch)
{
case(0):
{
flag = 0;
break;
}
case(1):
{
cout << "请输入需要几份?:";
int number;
cin >> number;
hamburger[0] = number;
break;
}
case(2):
{
cout << "请输入需要几份?:";
int number;
cin >> number;
hamburger[1] = number;
break;
}
case(3):
{
cout << "请输入需要几份?:";
int number;
cin >> number;
hamburger[2] = number;
break;
}
case(4):
{
cout << "请输入需要几份?:";
int number;
cin >> number;
snack[0] = number;
break;
}
case(5):
{
cout << "请输入需要几份?:";
int number;
cin >> number;
snack[1] = number;
break;
}
case(6):
{
cout << "请输入需要几份?:";
int number;
cin >> number;
drink[0] = number;
break;
}
case(7):
{
cout << "请输入需要几份?:";
int number;
cin >> number;
drink[1] = number;
break;
}
case(8):
{
cout << "请输入需要几份?:";
int number;
cin >> number;
drink[2] = number;
break;
}
default:
{
cout << "请输入正确的序号！" << endl;
break;
}
}
}
}
else if (2 == choose)
{
set_menu();
int ch, flag = 1;
while (flag)
{
cout << "请输入对应商品的序号:";
cin >> ch;
switch (ch)
{
case(0):
{
flag = 0;
break;
}
case(1):
{
cout << "请输入需要几份?:";
int number;
cin >> number;
set[0] = number;
break;
}
case(2):
{
cout << "请输入需要几份?:";
int number;
cin >> number;
set[1] = number;
break;
}
default:
{
cout << "请输入正确的序号！" << endl;
break;
}
}
}
}
//生成汉堡工厂类
Factory_Hamburger* fac_h = new Factory_Hamburger();
//生成具体的汉堡类
Food* hamburger1 = fac_h->food();
Food* hamburger2 = fac_h->food();
Food* hamburger3 = fac_h->food();
//实例化各个汉堡
//巨无霸
hamburger1->set_name("巨无霸");
hamburger1->set_price(17);
hamburger1->set_num(hamburger[0]);
//双层吉士汉堡
hamburger2->set_name("双层吉士汉堡");
hamburger2->set_price(15);
hamburger2->set_num(hamburger[1]);
//麦辣鸡腿汉堡
hamburger3->set_name("麦辣鸡腿汉堡");
hamburger3->set_price(15);
hamburger3->set_num(hamburger[2]);
//生成小吃工厂类
Factory_Snack* fac_s = new Factory_Snack();
//生成具体的小吃类
Food* snack1 = fac_s->food();
Food* snack2 = fac_s->food();
//实例化各个小吃
//大薯条
snack1->set_name("大薯条");
snack1->set_price(11);
snack1->set_num(snack[0]);
//麦乐鸡
snack2->set_name("麦乐鸡");
snack2->set_price(9);
snack2->set_num(snack[1]);
//生成饮料工厂类
Factory_Drink* fac_d = new Factory_Drink();
//生成具体的饮料类
Food* drink1 = fac_d->food();
Food* drink2 = fac_d->food();
Food* drink3 = fac_d->food();
//实例化各个饮料
//可口可乐
drink1->set_name("可口可乐");
drink1->set_price(7);
drink1->set_num(drink[0]);
//七喜
drink2->set_name("七喜");
drink2->set_price(7);
drink2->set_num(drink[1]);
//橙汁
drink3->set_name("橙汁");
drink3->set_price(7);
drink3->set_num(drink[2]);
//生成套餐工厂类
Factory_Set* fac_se = new Factory_Set();
//生成具体的套餐类
Food* set1 = fac_se->food();
Food* set2 = fac_se->food();
//实例化各个套餐
//巨无霸超值套餐
set1->set_name("巨无霸超值套餐");
set1->set_price(25);
set1->set_num(set[0]);
//双层吉士汉堡超值套餐
set2->set_name("双层吉士汉堡超值套餐");
set2->set_price(23);
set2->set_num(set[1]);
//找零部分
cout << "---------------------" << endl;
double sum = 0;
sum = sum + hamburger1->get_sum();
sum = sum + hamburger2->get_sum();
sum = sum + hamburger3->get_sum();
sum = sum + snack1->get_sum();
sum = sum + snack2->get_sum();
sum = sum + drink1->get_sum();
sum = sum + drink2->get_sum();
sum = sum + drink3->get_sum();
sum = sum + set1->get_sum();
sum = sum + set2->get_sum();
cout << "您共计消费:" << sum << endl;
cout << "请问您是否使用优惠券？(输入0已接受)";
int ch;
cin >> ch;
int yhq=0;
if (0 == ch)
{
cout << "您拥有如下优惠券:" << endl;
cout << "-1.满50减5" << endl;
cout << "-2.满100减15" << endl;
cout << "-3.满200减40" << endl;
cout << "每次消费仅能使用一张优惠券,请选择使用的优惠券" << endl;
int flag = 1;
while (flag)
{
int ch;
cin >> ch;
if (ch == 1)
{
if (sum > 50) { sum -= 5; cout << "使用消费券成功!"; }
else { cout << "您的消费金额还不能使用优惠券！" << endl; }
flag = 0;
}
if (ch == 2)
{
if (sum > 100) { sum -= 15; cout << "使用消费券成功!";}
else { cout << "您的消费金额还不能使用优惠券！" << endl; }
flag = 0;
}
if (ch == 3)
{
if (sum > 200) { sum -= 40; cout << "使用消费券成功!";}
else { cout << "您的消费金额还不能使用优惠券！" << endl; }
flag = 0;
}
if (ch == 0)
{
cout << "不使用优惠券" << endl;
flag = 0;
}
}
}
cout << "请问您支付多少:";
double pay;
cin >> pay;
double payback = pay - sum;
while (0 > payback)
{
cout << "您好，您的钱不够本次消费(微笑.jpg),请重给，谢谢您哦~";
cin >> pay;
payback = pay - sum;
}
cout << "共计收您" << pay << "元。" << endl;
cout << "找零为:" << payback << "元" << endl;
int cho;
cout << "---------------------" << endl;
cout << "请选择是否打印小票:(输入0以打印)" << endl;
cin >> cho;
if (0 == cho)
{
//打印小票部分
/*
ofstream outfile("receipt.dat", ios::out);
cout << "---------------------" << endl;
outfile << "---------------------" << endl;
cout << "欢迎来到肯德基欢乐餐厅！" << endl;
outfile << "欢迎来到肯德基欢乐餐厅！" << endl;
cout << "您共计点餐:" << endl;
outfile << "您共计点餐:" << endl;
cout << endl;
outfile << endl;
if (0 != hamburger[0]) { cout << "巨无霸--" << hamburger[0] << "份" <<endl;outfile << "巨无霸--" << hamburger[0] << "份" << endl; }
if (0 != hamburger[1]) { cout << "双层吉士汉堡--" << hamburger[1] << "份" << endl;outfile << "双层吉士汉堡--" << hamburger[1] << "份" << endl; }
if (0 != hamburger[2]) { cout << "麦辣鸡腿汉堡--" << hamburger[2] << "份" << endl; outfile << "麦辣鸡腿汉堡--" << hamburger[2] << "份" << endl;}
if (0 != snack[0]) { cout << "大薯条--" << snack[0] << "份" << endl;outfile << "大薯条--" << snack[0] << "份" << endl; }
if (0 != snack[1]) { cout << "麦乐鸡--" << snack[1] << "份" << endl; outfile << "麦乐鸡--" << snack[1] << "份" << endl;}
if (0 != drink[0]) { cout << "可口可乐--" << drink[0] << "份" << endl;outfile << "可口可乐--" << drink[0] << "份" << endl; }
if (0 != drink[1]) { cout << "七喜--" << drink[1] << "份" << endl; outfile << "七喜--" << drink[1] << "份" << endl;}
if (0 != drink[2]) { cout << "橙汁--" << drink[2] << "份" << endl;outfile << "橙汁--" << drink[2] << "份" << endl; }
if (0 != set[0]) { cout << "巨无霸超值套餐--" << set[0] << "份" << endl;outfile << "巨无霸超值套餐--" << set[0] << "份" << endl; }
if (0 != set[1]) { cout << "双层吉士汉堡超值套餐--" << set[1] << "份" << endl; outfile << "双层吉士汉堡超值套餐--" << set[1] << "份" << endl;}
cout << "---------------------" << endl;
outfile << "---------------------" << endl;
cout << "共计收您" << pay << "元。" << endl;
outfile << "共计收您" << pay << "元。" << endl;
cout << "找零为:" << payback << "元" << endl;
outfile << "找零为:" << payback << "元" << endl;
*/
ofstream outfile("receipt.dat", ios::out);
cout << "---------------------" << endl;
outfile << "---------------------" << endl;
cout << "欢迎来到肯德基欢乐餐厅！" << endl;
outfile << "欢迎来到肯德基欢乐餐厅！" << endl;
cout << "您共计点餐:" << endl;
outfile << "您共计点餐:" << endl;
cout << endl;
outfile << endl;
H1 *h1 = new H1;
h1->get_num(hamburger[0]);
H2 *h2 = new H2;
h2->get_num(hamburger[1]);
H3 *h3 = new H3;
h3->get_num(hamburger[2]);
S1 *s1 = new S1;
s1->get_num(snack[0]);
S2 *s2 = new S2;
s2->get_num(snack[1]);
D1 *d1 = new D1;
d1->get_num(drink[0]);
D2 *d2 = new D2;
d2->get_num(drink[1]);
D3 *d3 = new D3;
d3->get_num(drink[2]);
SET1 *set1 = new SET1;
set1->get_num(set[0]);
SET2 *set2 = new SET2;
set2->get_num(set[1]);
Context *ph1 = new Context(h1);
Context *ph2 = new Context(h2);
Context *ph3 = new Context(h3);
Context *ps1 = new Context(s1);
Context *ps2 = new Context(s1);
Context *pd1 = new Context(d1);
Context *pd2 = new Context(d2);
Context *pd3 = new Context(d3);
Context *pset1 = new Context(set1);
Context *pset2 = new Context(set2);
ph1->Interface();
ph2->Interface();
ph3->Interface();
ps1->Interface();
ps2->Interface();
pd1->Interface();
pd2->Interface();
pd3->Interface();
pset1->Interface();
pset2->Interface();
cout << endl;
outfile << endl;
cout << "---------------------" << endl;
outfile << "---------------------" << endl;
cout << "---------------------" << endl;
outfile << "---------------------" << endl;
cout << endl;
outfile << endl;
cout << "共计收您" << pay << "元。" << endl;
outfile << "共计收您" << pay << "元。" << endl;
cout << "找零为:" << payback << "元" << endl;
outfile << "找零为:" << payback << "元" << endl;
outfile.close();
//运用策略模式简化上列大量if语句
}
}
};
int main()
{
collect c;
c.menu();
}
2.测试代码
#include <iostream>
#include <fstream>
using namespace std;
class xiaopiao
{
public:
virtual void output() = 0;
} ;
class H1 : public xiaopiao
{
public:
void get_num(int n)
{
num = n;
}
void output()
{
ofstream outfile("receipt.dat", ios::out);
cout << "巨无霸--" << num << "份" <<endl;
outfile << "巨无霸--" << num << "份" << endl;
outfile.close();
}
protected:
int num;
};
class H2 : public xiaopiao
{
public:
void get_num(int n)
{
num = n;
}
void output()
{
ofstream outfile("receipt.dat", ios::out);
cout << "双层吉士汉堡--" << num << "份" <<endl;
outfile << "双层吉士汉堡--" << num << "份" << endl;
outfile.close();
}
protected:
int num;
};
class H3 : public xiaopiao
{
public:
void output()
{
ofstream outfile("receipt.dat", ios::out);
cout << "麦辣鸡腿汉堡--" << 1 << "份" <<endl;
outfile << "麦辣鸡腿汉堡--" << 1 << "份" << endl;
outfile.close();
}
};
class S1 : public xiaopiao
{
public:
void output()
{
ofstream outfile("receipt.dat", ios::out);
cout << "大薯条--" << 1 << "份" <<endl;
outfile << "大薯条--" << 1 << "份" << endl;
outfile.close();
}
};
class S2 : public xiaopiao
{
public:
void output()
{
ofstream outfile("receipt.dat", ios::out);
cout << "麦乐鸡--" << 1 << "份" <<endl;
outfile << "麦乐鸡--" << 1 << "份" << endl;
outfile.close();
}
};
class D1 : public xiaopiao
{
public:
void output()
{
ofstream outfile("receipt.dat", ios::out);
cout << "可口可乐--" << 1 << "份" <<endl;
outfile << "可口可乐--" << 1 << "份" << endl;
outfile.close();
}
};
class D2 : public xiaopiao
{
public:
void output()
{
ofstream outfile("receipt.dat", ios::out);
cout << "七喜--" << 1 << "份" <<endl;
outfile << "七喜--" << 1 << "份" << endl;
outfile.close();
}
};
class D3 : public xiaopiao
{
public:
void output()
{
ofstream outfile("receipt.dat", ios::out);
cout << "橙汁--" << 1 << "份" <<endl;
outfile << "橙汁--" << 1 << "份" << endl;
outfile.close();
}
};
class SET1 : public xiaopiao
{
public:
void output()
{
ofstream outfile("receipt.dat", ios::out);
cout << "巨无霸超值套餐--" << 1 << "份" <<endl;
outfile << "巨无霸超值套餐--" << 1 << "份" << endl;
outfile.close();
}
};
class SET2 : public xiaopiao
{
public:
void output()
{
ofstream outfile("receipt.dat", ios::out);
cout << "双层吉士汉堡超值套餐--" << 1 << "份" <<endl;
outfile << "双层吉士汉堡超值套餐--" << 1 << "份" << endl;
outfile.close();
}
};
class Context
{
public:
Context(xiaopiao *p) : pStrategy(p)
{
}
void Interface()
{
pStrategy->output();
}
private:
xiaopiao *pStrategy;
};
int main()
{
ofstream outfile("receipt.dat", ios::out);
cout << "---------------------" << endl;
outfile << "---------------------" << endl;
cout << "欢迎来到麦当劳欢乐餐厅！" << endl;
outfile << "欢迎来到麦当劳欢乐餐厅！" << endl;
cout << "您共计点餐:" << endl;
outfile << "您共计点餐:" << endl;
cout << endl;
outfile << endl;
H1 *h1 = new H1;
h1->get_num(2);
H2 *h2 = new H2;
h2->get_num(3);
H3 *h3 = new H3;
S1 *s1 = new S1;
S2 *s2 = new S2;
D1 *d1 = new D1;
D2 *d2 = new D2;
D3 *d3 = new D3;
SET1 *set1 = new SET1;
SET2 *set2 = new SET2;
Context *ph1 = new Context(h1);
Context *ph2 = new Context(h2);
Context *ph3 = new Context(h3);
Context *ps1 = new Context(s1);
Context *ps2 = new Context(s1);
Context *pd1 = new Context(d1);
Context *pd2 = new Context(d2);
Context *pd3 = new Context(d3);
Context *pset1 = new Context(set1);
Context *pset2 = new Context(set2);
ph1->Interface();
ph2->Interface();
ph3->Interface();
ps1->Interface();
ps2->Interface();
pd1->Interface();
pd2->Interface();
pd3->Interface();
pset1->Interface();
pset2->Interface();
if (h1) delete h1;
if (h2) delete h2;
if (h3) delete h3;
if (s1) delete s1;
if (s2) delete s2;
if (d1) delete h1;
if (d2) delete d2;
if (d3) delete d3;
if (set1) delete set1;
if (set2) delete set2;
}
五、结果展示
六、总结
1.本次作业为KFC点餐系统，刚开始的想法是用Java做，但是在看了许多资料结合自己的情况，最终采用C++来写程序，C++确实较Java熟悉了很多。
2.这次只做了基本要求，没有做提高要求，我会在后面的学习中，结合可视化界面和数据库连接，将点餐系统完善。
3.主要运用到设计模式中的策略模式和工厂模式，其中工厂模式负责生产餐厅中的各种食物的对象，策略模式负责在生成小票时避免出现冗杂的if语句。
4.从RPG游戏和KFC点餐系统两次的作业来看，这两次的代码认为量来说都是比较大的，对于其中的一些函数功能的使用，还有设计模式的理解并且不到位。
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