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。
