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  1. #include <iostream>    
  2. #include <vector>
  3.  
  4.  
  5. class PUNKT{
  6. public:
  7.     PUNKT(int px=0, int py=0): x(px),y(py) {++zaehl;}
  8.     PUNKT(const PUNKT& other): x(other.x),y(other.y) {++zaehl;}
  9.     ~PUNKT() {--zaehl;}
  10.     static void ausgabe();
  11. private:                                     
  12.     int x,y;
  13.     static int zaehl;       // Anzahl der Elemente
  14. };
  15.  
  16. int PUNKT::zaehl=0;
  17.  
  18. void PUNKT::ausgabe() {
  19.     std::cout << zaehl << '\n';
  20. }
  21.  
  22. int main(int count, char **args) {
  23.  
  24.     std::vector<PUNKT> test;
  25.     test.push_back(PUNKT(2,3));
  26.     test.push_back(PUNKT(2,3));
  27.     test.push_back(PUNKT(2,3));
  28.     PUNKT::ausgabe();
  29.     test.clear();
  30.     PUNKT::ausgabe();
  31.     return 0;
  32. }
Success #stdin #stdout 0s 3472KB
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https://ideone.com/ut2UKt
language:
C++ (gcc 8.3)
created:
12 years ago
visibility:
public

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