Dispenser-1
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Classes: Machine Counter Dispenser UI -presents the user with an interface(menu) -Accept legal comands -Rejects illegal commands -Holds a value that is pass to ..... |
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Attributes |
Methods |
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Dispenser |
-cans in stock -price -name of product
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-sell – release can |
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Machine |
-1 dispenser for each kind of drink -1 counter |
-DoAction (ui)
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Counter |
-available change -amount tendered |
-add money -give change -return money -make sale |
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Attributes |
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Class Counter { private: int m_ nAmountTendered; int n_nChangeAvailable; int GiveChange(int nPrice); public: Counter(int nChange=1000); int AddMoney(in nAMount); bool MakeSale(int nPrice); int ReturnMoney(); int GetAmount() Const; //Accessor function, //const: execution of this method is not going to change the state or value of the object or naything in the object }; |
Counter::Counter(int n Change) { m_nAmountTendered = 0; m_nChangeAvailable = nChange; } int Counter::AddMoney(int nAmount) { m_nAmountTendered += nAmount return m_nAmountTendered; } int Counter::GiveChange(int nPrice) { int nChange = M_nAmountTendered – nPrice; if (nChange > m_nChangeAvailable) { nChange = m_nChangeAvailable; m_nChangeAvailable = 0; return nChange; } m_nChangeAvailable -= nChange; return nChange; } bool Counter::MakeSale(int nPrice) { if (m_nAmountTendered < nPrice) { cout << "Not enough cash"; cout << endl; return false; } int nchange = GiveChange(nPrice); cout << "Sale Complete" cout << endl; if (nChange > 0) { cout << "Returned: " << nChange; cout << endl; } m_nAmountTendered = 0; return true; } int Counter::Return Money() { int ntemp = m_nAmount Tendered; m_nAmountTendered = 0; return nTemp; }
int Counter::GetAmount() const { return m_nAmountTendered; }
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Class Dispenser { int m_nCans; int m_nPrice; char M-szName[NAME_SIZE +1]; Public: Dispenser() Void SetValues(char* szName, int nPrice, int nCans = 25); int GetCanCount() conts; int GetPrice() const; char* GetName() const; //accessor function bool ReleaseCan(); }; |
Dispenser::Dispenser() //don’t need now with //Machine::Machine(): Initalization List Constructor { m_nCans=0; m_nPrice=0; m_szName[0] = ‘\0’; } //S/B w/ Initializtiion List Dispenser::Despenser(char* szName, int nPrice, int nCans) } void Dispenser::SetValues(char* szName, int nPrice, int nCans) { strncpy(m_szname, szname,NAMESIZE); m_szname[NAME_SIZE] = ‘\0’; //m_szname @ NAME_SIZE m_nCans = nCans; m-nPrice = nPrice; } int Dispenser::GetCanCount() const { return m_nCans; } int Dispenser::Get Price() const { return m_nPrice; } Char* Dispenser::GetName() const { returnm_szName; } bool Dispenser::ReleaseCan() { if(GetCanCount() > 0) { m-nCans--; return true; } return false; } |
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Class Machine { Dispenser m_Jolt; Dispenser m_Diet; Dispenser m_OJ; Dispenser m_Sprite; Dispenser m_Prune; Counter m_CC: Public: Machine(); //constructor void DoAction(int nCommand); }; |
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Dispenser-2
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Class Counter { public: int GetAmount(); int AddMoney(int nAmount); int DispenseChange(int nAMount); int ReturnMoney(); }; Class Dispenser{ bool Release can(); int GetCanCount();const; int GetPrice()const; char* GetName() const; {; Class Machine { void DoAction(int nCommand); }; Class UI { private: int m_nCommand; void ShowMenu(); public: UI(): int GetValueFromUser(); int GetCommand() const; bool IsExit(); } |
void UI::Show Menu() { system ("cls"); cout << "Please select one of the following options: \n" cout << "\n\t L: Loonie\n"; cout << "\n\t Q: Quarter \n"; . . . . . cout <<"\n\t J: Jolt Cola \n"; cout << "\n\t O: Orange Juice\n"; cout <<"\n\t M: Redraw Menu\n"; cout << "\n\t x: Exit Program\n<<endl; }
#define LEGAL_COMMANDS "LQDNRJOCPSMXlqdnrjocpsmx" int UI::Get Value From User() { char szCmd[1+1]; while(true) { cout << "Enter a command>"; if (GetChars(szCmd,1,LEGAL_COMMANDS) ==0) { Show Menu(): } else { szCmd[0] = toupper(szCmd[0]); m_nCommand = szCmd[0]; //m_nCommand=touper(szCmd[0]); //replaces above 2 lines return m_nCommand; } } }
int UI::GetCommand()const { return m_nCommand; }
bool UI::IsExit() { return m_nCommand == (int) ‘X’; } UI::UI() { m_nCommand = 0; Show Menu(); } |
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#include "UI.h" #include "Machine,h" int main () { UI ui; Machine S; ui.GetValueFromUser(); while (ui.IsExit() == false) { s.DoAction(ui.GetCommand()); ui.GetValueFromUser(); } return 0; } |
void Machine ::DoAction(int nCmd) { Switch(n(nrd) { Case ‘L’: m.cc.AddMoney(100); return; case’Q’: m_CC.AddMoney(25); return; case ‘R’: m_CC.TrturnMoney(); return; . . . . . . . . . case ‘J’: if (m_CC.GetAmount(0 .= M-Jolt.GetPrice()) { if (m_Jolt.ReleaseCan() == true) { int nRet = m_CC.MakeSale(m_Jolt.GetPrice()); cout << "One Can of" << m_Jolt.GetName() << "Sold " << mRet << "cents returned" << endl; } else { cout << "Sold Out!" <<endl; } } |
