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  1. #include <iostream>
  2. #include <algorithm>
  3. #include <unordered_map>
  4. #include <vector>
  5.  
  6. using namespace std;
  7.  
  8.  
  9.  
  10. void variant_1(){
  11.    //Тупой вариант
  12.    //Если массив структур "покупатель" не имеет дубликатов и нужно просто отсортировать массив, а общую стоимость покупок нужно глобальную выдавать
  13.  
  14.  
  15.    struct pokupatel{
  16.       string famulia,imya,nomer_carti,naimenovanie;
  17.       int stoimost;
  18.    };
  19.  
  20.    pokupatel massiv[]={    //Заданный масив структур покупатель
  21.                            {"Filatov","Andrey","3123-5235-6322-6232","Petrushka",20},
  22.                            {"Mihailov","Sergey","6236-2355-2366-6344","Ukrop",30},
  23.                            {"Mihailov","Sergey","6236-2355-2366-6344","Moloko",90},
  24.                            {"Mihailova","Elena","9999-8888-7777-5555","Spichki",3},
  25.                            {"Mihailova","Sveta","9999-8888-7777-6666","godnaya petrushka",9000},
  26.                       };
  27.  
  28.    //--------------------------------------
  29.  
  30.  
  31.    //Отсортирую в порядке увеличения стоимости отдельной покупки (на всякий случай)
  32.    std::sort(&massiv[0],&massiv[sizeof(massiv)/sizeof(*massiv)],[](pokupatel& a,pokupatel& b){return a.stoimost<b.stoimost;});
  33.  
  34.  
  35.    //Выведу эту штуку
  36.    cout<<" Svedeniya o pokupkah:\n\
  37.  Imya       Familia    Karta                  Cena    Nazvanie                 Obshaya cena\n\
  38.  -----------------------------------------------------------------------\n";
  39.          int o=0;
  40.    for (auto a:massiv){
  41.       printf(" %-10s %-10s %-18s |  %-5d   %-20s  |  %-5d\n",a.imya.c_str(),a.famulia.c_str(),a.nomer_carti.c_str(),a.stoimost,a.naimenovanie.c_str(),(o+=a.stoimost));
  42.    }
  43. }
  44.  
  45.  
  46.  
  47. void variant_2(){
  48.    //Умный вариант
  49.    //Если массив структур "покупатель" имеет дубликаты, и нужно из них собрать массив покупателей
  50.  
  51.  
  52.    struct pokupatel{
  53.       string famulia,imya,nomer_carti,naimenovanie;
  54.       int stoimost;
  55.    };
  56.  
  57.    pokupatel massiv[]={    //Заданный масив структур покупатель
  58.                            {"Filatov","Andrey","3123-5235-6322-6232","Petrushka",20},  // |
  59.                            {"Mihailov","Sergey","7543-3457-2535-2321","Ukrop",30},     // | - эти ребята какую-то дичь купили
  60.                            {"Mihailov","Sergey","7543-3457-2535-2321","Moloko",90},    // |
  61.                            {"Mihailova","Elena","6236-2355-2366-6344","Moloko",90},  //Елена купила кучу спичек и молоко
  62.                            {"Mihailova","Elena","6236-2355-2366-6344","Spichki",3},
  63.                            {"Mihailova","Elena","6236-2355-2366-6344","Spichki",3},
  64.                            {"Mihailova","Elena","6236-2355-2366-6344","Spichki",3},
  65.                            {"Mihailova","Elena","6236-2355-2366-6344","Spichki",3},
  66.                            {"Mihailova","Elena","6236-2355-2366-6344","Spichki",3},
  67.                            {"Mihailova","Elena","6236-2355-2366-6344","Spichki",3},
  68.                            {"Mihailova","Elena","6236-2355-2366-6344","Spichki",3},
  69.                            {"Mihailova","Elena","6236-2355-2366-6344","Spichki",3},
  70.                            {"Mihailova","Elena","6236-2355-2366-6344","Spichki",3},
  71.                            {"Mihailova","Sveta","9999-8888-7777-5555","Petrushka",20}, //Света купила кучу петрушки и спички
  72.                            {"Mihailova","Sveta","9999-8888-7777-5555","Petrushka",20},
  73.                            {"Mihailova","Sveta","9999-8888-7777-5555","Petrushka",20},
  74.                            {"Mihailova","Sveta","9999-8888-7777-5555","Petrushka",20},
  75.                            {"Mihailova","Sveta","9999-8888-7777-5555","Petrushka",20},
  76.                            {"Mihailova","Sveta","9999-8888-7777-5555","Spichki",3},
  77.                       };
  78.  
  79.    //--------------------------------------
  80.  
  81.    std::unordered_map<string,int> bb;
  82.    for (auto a:massiv) if (auto m = bb.emplace(a.nomer_carti+" "+a.imya+" "+a.famulia,a.stoimost);!m.second) (*m.first).second+=a.stoimost;
  83.    using pp=std::pair<string,int>;
  84.    std::vector<pp> arr{bb.begin(),bb.end()};
  85.    std::sort(arr.begin(),arr.end(),[](auto& a, auto& b){return a.second<b.second; });
  86.    for (auto a:arr)
  87.      printf(" %-37s : %-5d\n",a.first.c_str(),a.second);
  88.  
  89. }
  90.  
  91.  
  92. int main(){
  93.  
  94.    variant_2();
  95.   // variant_1();
  96.    return 0;
  97.  
  98. }
  99.  
Success #stdin #stdout 0s 4296KB
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stdin
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Standard input is empty
stdout
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 3123-5235-6322-6232 Andrey Filatov    : 20   
 9999-8888-7777-5555 Sveta Mihailova   : 103  
 6236-2355-2366-6344 Elena Mihailova   : 117  
 7543-3457-2535-2321 Sergey Mihailov   : 120
https://ideone.com/g2t3Nd
language:
C++14 (gcc 8.3)
created:
4 years ago
visibility:
public

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