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  1. /*************************/
  2. /*/  ---CPP11 ISO---    /*/
  3. /*/                     /*/
  4. /*/  dodaj ako ti nije  /*/
  5. /*/  vec defaultno      /*/
  6. /*/  pri kompilaciji    /*/
  7. /*/  -std=c++11         /*/
  8. /*************************/
  9.  
  10. #include <iostream>
  11. #include <vector>
  12. #include <algorithm>
  13.  
  14. using namespace std;
  15. typedef unsigned int uint;
  16.  
  17. #define NOT_IN_ORDER 0xff  // definiraj invariant (ono sto ne pase)
  18.                            // vidi nize i bit ce jasnije
  19.  
  20.  
  21. // struct Menu nosi osnovne podatke
  22. struct Menu
  23. {
  24.     Menu(string menuItem , float menuPrice);
  25.  
  26.     string MenuItem;
  27.     float MenuPrice;
  28.  
  29. };
  30.  
  31. Menu::Menu(string menuItem , float menuPrice)
  32.     : MenuItem(menuItem) , MenuPrice(menuPrice)
  33. {
  34. }
  35.  
  36.  
  37. // u klasi Restaurant rijesavamo cijeli zadatak
  38. class Restaurant
  39. {
  40. public:
  41.     Restaurant();
  42.  
  43.     // serve i display su dostupni
  44.     // ostalo nema potrebe biti public
  45.     // jer samo Restaurant interno
  46.     // barata onime sto je pod private
  47.     void serve();
  48.     void display();
  49.  
  50.  
  51. private:
  52.     vector<Menu> m_menus
  53.     {
  54.         // c++11 dopusta iniciranje u samoj klasi
  55.         // iskoristit cemo to upravo sad
  56.         Menu("Plain_Egg",1.45),
  57.         Menu("Bacon_and_Egg",2.45),
  58.         Menu("Muffin",0.99),
  59.         Menu("French_Toast",1.45),
  60.         Menu("Fruit_Basket",2.49),
  61.         Menu("Cereal",0.69),
  62.         Menu("Coffee",0.50),
  63.         Menu("Tea",0.75)
  64.     };
  65.  
  66.     // ovime vrsimo provjeru unesenog MenuItem-a
  67.     uint processWhat(string what);
  68.  
  69.     // u order punimo index odnosno offsete m_menus-a
  70.     // vidi nize da bude jasnije
  71.     vector<uint> order;
  72.  
  73. };
  74.  
  75. Restaurant::Restaurant()
  76. {
  77.     cout<< "u ponudi restauranta imamo :\n\n";
  78.  
  79.     // c++11 auto je dobra stvar koja ubrzava code
  80.     // dakle iskoristimo ga
  81.     for(auto x : m_menus)
  82.         cout<< x.MenuItem << " " << x.MenuPrice << endl;
  83. }
  84.  
  85.  
  86. void Restaurant::serve()
  87. {
  88.     cout<< "\nchoose menu\n\n";
  89.  
  90.     string terminateString = "done";
  91.     string what = "";
  92.  
  93.     while(what != terminateString)
  94.     {
  95.         cin>> what;
  96.  
  97.         uint offset = processWhat(what);
  98.         if(offset != NOT_IN_ORDER)
  99.         {
  100.             // ukoliko je narudzba jednaka posojecem menu
  101.             // u order stavljamo offset iz m_menus-a
  102.             // vidi jos nize
  103.             order.push_back(offset);
  104.             cout<< "OK , another one or type done for exit\n";
  105.             }
  106.         else
  107.             cout<< "not in order , try again or type done for exit\n";
  108.  
  109.     }
  110.  
  111.     display();
  112. }
  113.  
  114.  
  115. uint Restaurant::processWhat(string what)
  116. {
  117.     vector<Menu>::iterator it = find_if(m_menus.begin(),m_menus.end(), [&] (Menu a)
  118.     {	//c++11 lambda
  119.         return (a.MenuItem == what);
  120.     }
  121.                                        );
  122.     // ukoliko menu koji je user upisao postoji
  123.     // njegov offset u m_menus-u dobijes pointer aritmetikom
  124.     // it - m_menus.begin() a ukoliko menu ne postoji vrati invariant
  125.     return (it == m_menus.end() ? NOT_IN_ORDER : (it - m_menus.begin()));
  126. }
  127.  
  128.  
  129. void Restaurant::display()
  130. {
  131.     // na kraju ispis svega
  132.     float price = 0;
  133.  
  134.     cout<< "\nNARUDZBA SADRZI :\n";
  135.     for(auto x : order)
  136.     {
  137.         cout<< m_menus[x].MenuItem << endl;
  138.         price += m_menus[x].MenuPrice;
  139.     }
  140.  
  141.     cout<< "\n\n\nTOTAL : " << price << "$\nDODJITE NAM OPET\n\n";
  142. }
  143.  
  144.  
  145.  
  146. int main()
  147. {
  148.     Restaurant BUG_RESTAURANT;
  149.     BUG_RESTAURANT.serve();
  150.  
  151.  
  152.     // pozdrav i sretno
  153.     return 0;
  154. }
  155.  
Success #stdin #stdout 0s 3440KB
comments (?)
stdin 
Bacon_and_Egg Muffin Coffee done
stdout 
u ponudi restauranta imamo :

Plain_Egg 1.45
Bacon_and_Egg 2.45
Muffin 0.99
French_Toast 1.45
Fruit_Basket 2.49
Cereal 0.69
Coffee 0.5
Tea 0.75

choose menu

OK , another one or type done for exit
OK , another one or type done for exit
OK , another one or type done for exit
not in order , try again or type done for exit

NARUDZBA SADRZI :
Bacon_and_Egg
Muffin
Coffee



TOTAL : 3.94$
DODJITE NAM OPET
https://ideone.com/7p3yRh
language:
C++14 (gcc 8.3)
created:
11 years ago
visibility:
public

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