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  1. #include <iostream>
  2. #include <string>
  3. #include <vector>
  4. #include <unordered_map>
  5. #include <utility>
  6. #include <stdlib.h> 
  7. using namespace std;
  8.  
  9. class Item
  10. {
  11.     private:
  12.         string m_name;
  13.         float m_cost;
  14.     public:
  15.         Item(string t_name,float t_cost):m_name(t_name),m_cost(t_cost)
  16.         {
  17.  
  18.         }
  19.         string getName()
  20.         {
  21.             return m_name;
  22.         }
  23.         float getCost()
  24.         {
  25.             return m_cost;
  26.         }
  27. };
  28. class VendingMachine
  29. {
  30.     private:
  31.         vector<Item> m_totalItems;
  32.         unordered_map<string,Item>m_products;
  33.         float m_remainingCharges{0};
  34.         float m_moneyInserted{0};
  35.         size_t itemCount{0};
  36.     public:
  37.         VendingMachine()
  38.         {
  39.  
  40.         }
  41.         void addItemToVendingMachine(string t_name,size_t t_cost)
  42.         {
  43.             float temp=static_cast<float>(t_cost)/static_cast<float>(100);  
  44.             Item item(t_name,temp);
  45.             m_totalItems.push_back(item);
  46.             m_products.insert(make_pair(t_name,item));
  47.         }
  48.         bool chooseProduct(string t_name)
  49.         {
  50.             for(auto item:m_totalItems)
  51.             {
  52.                 if(item.getName()==t_name)
  53.                 {
  54.                     m_remainingCharges=item.getCost();
  55.                     return true;
  56.                 }
  57.                 itemCount++;
  58.             }
  59.             cout<<"Item not currently available: "+t_name<<endl;
  60.             return false;
  61.         }
  62.         void insertCoin(size_t t_coin)
  63.         {   
  64.             float temp=static_cast<float>(t_coin);
  65.             if(t_coin<=50)
  66.             {
  67.                 temp/=100;
  68.                 cout.precision(10);
  69.                 cout<<scientific<<"temp:"<<temp<<" vs.double "<<0.1<<" or float "<<0.1f<<endl;
  70.             }
  71.             if(temp==0.01f or temp==0.05f or temp==0.1f or temp==1.00f or temp==2.00f or temp==0.25f or temp==0.50f)
  72.             {
  73.                 m_moneyInserted+=temp;
  74.                 m_remainingCharges-=m_moneyInserted;
  75.             }
  76.             else
  77.             {
  78.                 cout<<"Does not accept: "<< t_coin<<" ,please insert correct coin."<<endl;
  79.                 return;
  80.             }
  81.         }
  82.         pair<Item,float> getProduct()
  83.         {
  84.             auto item=m_totalItems[itemCount];
  85.             auto itemBack=m_totalItems.back();
  86.             m_totalItems[itemCount]=itemBack;
  87.             m_totalItems.pop_back();
  88.             return make_pair(item,abs(m_remainingCharges));
  89.         }
  90.  
  91.         float refund()
  92.         {
  93.             if(m_remainingCharges<0)
  94.                 return abs(m_remainingCharges);
  95.             else
  96.                 return 0;
  97.         }
  98.         void resetOperator()
  99.         {
  100.              m_remainingCharges=0;
  101.              m_moneyInserted=0;
  102.              itemCount=0;
  103.         }
  104. };
  105. int main()
  106. {
  107.     Item item("Candy",0.50);
  108.     cout<<item.getName()<<" ";
  109.     cout<<item.getCost()<<endl;
  110.     VendingMachine machine;
  111.     machine.addItemToVendingMachine("CANDY",10);
  112.     machine.addItemToVendingMachine("SNACK",50);
  113.     machine.addItemToVendingMachine("Coke",25);
  114.     machine.insertCoin(10);
  115.     machine.insertCoin(25);
  116.     machine.insertCoin(50);
  117.     machine.chooseProduct("CANDY");
  118.     auto temp=machine.getProduct();
  119.     cout<<temp.first.getName()<<endl;
  120.     cout<<temp.second<<endl;
  121.     machine.resetOperator();
  122.     return 0;  
  123. };
  124.  
Success #stdin #stdout 0s 4408KB
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stdin
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Standard input is empty
stdout
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Candy 0.5
temp:1.0000000149e-01 vs.double 1.0000000000e-01 or float 1.0000000149e-01
temp:2.5000000000e-01 vs.double 1.0000000000e-01 or float 1.0000000149e-01
temp:5.0000000000e-01 vs.double 1.0000000000e-01 or float 1.0000000149e-01
CANDY
1.0000000149e-01
https://ideone.com/k2Wab0
language:
C++14 (gcc 8.3)
created:
5 years ago
visibility:
public

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