// 캬~X~X.. 졸~] ~K~K~U~X~K ~E| .~E| ~U~Y~P ~Y~@~D~\ ~E~K거리~K~@ ~M ~U봤~]~L. ~L~L~D~\ ~L~S~\~J~T~M 80~T~D~\ ~]~C~A~]~X ~K~\~D~]~D..--; // ~L~@~U~]~X ~X~H~Y~X리~O~D ~P~\거 ~Y| .. | | 거 ~^~H~]~L ~P~U주길 // DeleteMe ~W~I ~] 미~Y~D~]~X 컬~_~A ~D~@ 기~J~]~D .. ~V~V~L ~U~L| .. // 문| ~\~]~X ~T~S~\ ~@~D // ~U~D~^~X~\ ~]~V~@~J~T if/else-if~J~T ~T~S~\ ~Q복~]~]| ~E~K~H~K. ~]걸 ~V~V~L | ~\거~U| ~H~X ~^~H~]~D~L~Z~T? Command Pattern? Polymorphism? ~X~]~@ 그~C Table Lookup? --JuNe if(command == "help") { Helper::showCommand(); } else if(command == "mymoney") { cout << sm.getRestMoney() << endl; } else if(command == "inventory") { user.showBuyedGoods(); } else if(command == "ask") { string good(&str[token+1], &str[str.size()]); sm.answerCost(good); } else if(command == "deposit") { string m(&str[token+1], &str[str.size()]); int money = StringConvertToInt(m); user.depositMoney(sm, money); } else if(command == "exit") { exit(0); } else if(command == "menu") { sm.showMenu(); } else if(command == "buy") { int token2 = getToken(str,2); string good(&str[token+1], &str[token2]); string cnt(&str[token2+1], &str[str.size()]); int count = StringConvertToInt(cnt); user.buyGoods(sm, sm.findGoods(good), count); } else if(command == "cancel") { int token2 = getToken(str,2); string good(&str[token+1], &str[token2]); string cnt(&str[token2+1], &str[str.size()]); int count = StringConvertToInt(cnt); user.cancleGoods(sm, sm.findGoods(good), count); } // ~V~V~L ~U~X면 if/else if ~Q복~]~D ~W~F~U~H~X ~^~H~]~D~L | 민~U~X~K~@ ~O리모~T~X~]~D ~]~Z~U~X기~\ ~V~H~J~K~H~K.(근~M ~]거 ~O리모~T~X~] ~^~B~X?--;) // map<string, Cmd*> ~]~_~K~]~\~\ string~W~P~J~T 커맨~S~\를,Cmd ~A~^~X~J~J~T HelpCmd~A~^~X~J, Deposit~A~^~X~J ~S~S~]~X ~@모 ~A~^~X~J, ~I ~E| ~A~^~X~J~S~]~X // 조~C~A ~A~^~X~J를 ~O~]~D~\ ~D~V줬~J~K~H~K. ~O~Y| ~A ~T~]~T~]~D ~U~X기 ~\~D~U~D~\..--; Parser~C~]~D~U| ~U~L map ~E~L~]~T~W~P~K ~E| ~S~]~D ~D~V주면~D~\ 그 ~E| ~W~P // ~U~K~U~X~J~T ~A~^~X~J를 ~O~Y| ~A ~U| ~K~U주면~D~\ ~D~W~H~J~K~H~K. ~F~L멸~^~P~W~P~D~\~J~T ~U| ~\~U~X~J~T ~C~O~D ~^~J~@ ~U~J~U~X구~Z~T. ~B~X~D~L~@~\ ~C~A~K~^~H | 민~]~D ~V~H~@~L..--; // ~]~C~V~W~T ~K~] ~U~H~B~X~X~D~Z~T. // 그~^~X~D~\ ~B~X~D~L~@~\ | ~P본 ~C #include <iostream> #include <string> #include <vector> #include <cassert> #include <map> using namespace std; class SuperMarket; class User; class Parser; class Helper; class Goods; class Packages; class Cmd; class Goods { private : string _name; int _cost; public : Goods(const string& name, int cost) : _name(name), _cost(cost) {} const string& getName() const { return _name; } int getCost() const { return _cost; } }; class Packages { private : Goods _good; int _count; public : Packages(const Goods& good, int count) : _good(good), _count(count) {} const Goods& getGoods() const { return _good; } int getCount() const { return _count; } void setCount(int n) { _count = n; } }; class SuperMarket { private : int _receivedMoney; vector<Goods> _havingGoods; public : SuperMarket() { Goods g1("candy",1000); _havingGoods.push_back(g1); Goods g2("diskette",1200); _havingGoods.push_back(g2); Goods g3("mouse",5000); _havingGoods.push_back(g3); _receivedMoney = 0; } void receiveMoney(int money) { _receivedMoney = money; cout << "OK" << endl; } void showMenu() const { cout << " ~T~I " << endl; for(int i = 0 ; i < _havingGoods.size() ; ++i) { cout << _havingGoods[i].getName() << " " << _havingGoods[i].getCost() << endl; } } void sellGoods(const Goods& goods, int count) { _receivedMoney -= goods.getCost() * count; } int getRestMoney() const { return _receivedMoney; } const vector<Goods>& getGoods() const { return _havingGoods; } void answerCost(const string& goodsName) const { bool isFind = false; for(int i = 0 ; i < _havingGoods.size() ; ++i) { if(_havingGoods[i].getName() == goodsName) { cout << _havingGoods[i].getCost() << endl; isFind = true; break; } } if(!isFind) { cout << "그~_ 물건 ~W~F~]~L!" << endl; } } const Goods& findGoods(const string& goodsName) const { for(int i = 0 ; i < _havingGoods.size() ; ++i) { if(_havingGoods[i].getName() == goodsName) { return _havingGoods[i]; } } } }; class User { private : vector<Packages> _buyedGoods; public : void depositMoney(SuperMarket& sm, int money) const { sm.receiveMoney(money); } void showBuyedGoods() { if(_buyedGoods.size() == 0) cout << "None" << endl; else { for(int i = 0 ; i < _buyedGoods.size() ; ++i) { cout << _buyedGoods[i].getGoods().getName() << " " << _buyedGoods[i].getCount() << endl; } } } void buyGoods(SuperMarket& sm, const Goods& goods, int count) { if(sm.getRestMoney() < goods.getCost() * count) cout << "can't buy" << endl; else { sm.sellGoods(goods, count); Packages p(goods, count); _buyedGoods.push_back(p); } } void cancleGoods(SuperMarket& sm, const Goods& goods, int count) { bool isFind = false; int nth = 0; for(int i = 0 ; i < _buyedGoods.size() ; ++i) { if(goods.getName() == _buyedGoods[i].getGoods().getName()) { isFind = true; nth = i; } } if(!isFind) cout << "그 물건 ~U~H~C~@~V~Z~T." << endl; else { if(_buyedGoods[nth].getCount() < count) { cout << "~B ~C보~K ~M~T ~N~] 취~F~L 못~U~K~H~K." << endl; } else if(_buyedGoods[nth].getCount() == count) { if(_buyedGoods[nth].getCount() == 0) { _buyedGoods.erase(_buyedGoods.begin() + nth); } } else { _buyedGoods[nth].setCount( _buyedGoods[nth].getCount() - count ); } } } }; class Helper { public : static void showCommand() { cout << "* deposit <money> -- ~O~H~]~D money~L~A ~X~H~H~U~\~K. " << endl; cout << "* mymoney -- ~B~]~@ ~O~H~]~D 보~W~@~K." << endl; cout << "* buy <product> <count> -- product 물건~]~D count ~L~A ~B~K." << endl; cout << "* inventory -- ~B 물건~]~X 목~]~]~D 보~W~@~K ." << endl; cout << "* cancel <product> <count> -- ~B product 물건~]~D count~\~L~A 취~F~L~U~\~K ." << endl; cout << "* ask <product> -- procuct 물건~]~X ~@격~]~D 묻~J~T~K ." << endl; cout << "* menu -- 구매 ~@~J~U~\ 물건~]~X 목~]~]~D 보~W~@~K ." << endl; cout << "* exit -- ~@~L를 ~B~X~D~K ." << endl; } }; class Cmd { public : virtual void executeCommand(SuperMarket& sm, User& user, const string& str) = 0; static int getToken(const string& str, int nth) { int ret = str.size(); int count = 0; for(int i = 0 ; i < str.size() ; ++i) { if(str[i] == ' ') { ret = i; ++count; if(count == nth) return ret; } } return ret; } int StringConvertToInt(string& str) { int ret = 0; for(int i = 0 ; i < str.length() ; ++i) { ret += CharToInt(str[i]) * Power(10,(str.length() - i)); } return ret; } int CharToInt(char ch) { return ch - 48; } int Power(int c, int e) { int ret = 1; for(int i = 0 ; i < e - 1 ; ++i) { ret *= c; } return ret; } }; class HelpCmd : public Cmd { public : void executeCommand(SuperMarket& sm, User& user, const string& str) { Helper::showCommand(); } }; class MyMoneyCmd : public Cmd { public : void executeCommand(SuperMarket& sm, User& user, const string& str) { cout << sm.getRestMoney() << endl; } }; class InventoryCmd : public Cmd { public : void executeCommand(SuperMarket& sm, User& user, const string& str) { user.showBuyedGoods(); } }; class AskCmd : public Cmd { public : void executeCommand(SuperMarket& sm, User& user, const string& str) { int token = getToken(str, 1); string good(&str[token+1], &str[str.size()]); sm.answerCost(good); } }; class DepositCmd : public Cmd { public : void executeCommand(SuperMarket& sm, User& user, const string& str) { int token = getToken(str, 1); string m(&str[token+1], &str[str.size()]); int money = StringConvertToInt(m); user.depositMoney(sm, money); } }; class ExitCmd : public Cmd { public : void executeCommand(SuperMarket& sm, User& user, const string& str) { exit(0); } }; class MenuCmd : public Cmd { public : void executeCommand(SuperMarket& sm, User& user, const string& str) { sm.showMenu(); } }; class BuyCmd : public Cmd { public : void executeCommand(SuperMarket& sm, User& user, const string& str) { int token = getToken(str,1); int token2 = getToken(str,2); string good(&str[token+1], &str[token2]); string cnt(&str[token2+1], &str[str.size()]); int count = StringConvertToInt(cnt); user.buyGoods(sm, sm.findGoods(good), count); } }; class CancleCmd : public Cmd { public : void executeCommand(SuperMarket& sm, User& user, const string& str) { int token = getToken(str,1); int token2 = getToken(str,2); string good(&str[token+1], &str[token2]); string cnt(&str[token2+1], &str[str.size()]); int count = StringConvertToInt(cnt); user.cancleGoods(sm, sm.findGoods(good), count); } }; class Parser { private : map<string, Cmd*> _tableCmd; public : Parser() { _tableCmd["help"] = new HelpCmd(); _tableCmd["mymoney"] = new MyMoneyCmd(); _tableCmd["inventory"] = new InventoryCmd(); _tableCmd["ask"] = new AskCmd(); _tableCmd["deposit"] = new DepositCmd(); _tableCmd["exit"] = new ExitCmd(); _tableCmd["menu"] = new MenuCmd(); _tableCmd["buy"] = new BuyCmd(); _tableCmd["cancle"] = new CancleCmd(); } void translateCommand(SuperMarket& sm, User& user, const string& str) { int token = Cmd::getToken(str,1); string command(&str[0], &str[token]); _tableCmd[command]->executeCommand(sm, user, str); } virtual ~Parser() { map<string, Cmd*> :: iterator i; for(i = _tableCmd.begin() ; i != _tableCmd.end() ; ++i) { delete &(i->second); } } }; int main() { User user; SuperMarket superMarket; Parser parser; char command[30]; while(1) { cout << endl << ">>> " ; cin.getline(command, 30); parser.translateCommand(superMarket, user, command); } return 0; }