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  1. #include <iostream>
  2. #include <queue>
  3.  
  4. using namespace std;
  5.  
  6. // Jakas klasa.
  7. class X {
  8. public:
  9.  
  10.   int x;
  11.  
  12.   X(int x) : x(x) {}
  13. };
  14.  
  15. // Funktor porownujacy.
  16. class XComparator {
  17. public:
  18.  
  19.   bool operator()(const X *x1, const X *x2) {
  20.     return (x1->x < x2->x);
  21.   }
  22. };
  23.  
  24. int main() {
  25.  
  26.   // Definicja kolejki z funktorem porownujacym.
  27.   priority_queue<X *, vector<X *>, XComparator> test;
  28.  
  29.   // Dodanie elementow.
  30.   test.push(new X(5));
  31.   test.push(new X(10));
  32.   test.push(new X(-1));
  33.   test.push(new X(7));
  34.  
  35.   // Jezeli dziala, powinno byc 10.
  36.   cout << test.top()->x;
  37.  
  38.   // Zwolnienie pamieci.
  39.   while (!test.empty()) {
  40.     delete test.top();
  41.     test.pop();
  42.   }
  43.  
  44.   return 0;
  45. }
Success #stdin #stdout 0.01s 2856KB
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10
https://ideone.com/wNi1r
language:
C++ (gcc 8.3)
created:
11 years ago
visibility:
public

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