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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() {--zaehl;}
  9.     void verschiebe(int dx, int dy);
  10.     void ausgabe();
  11. protected:                                     
  12.     int x,y;
  13.     static int zaehl;       // Anzahl der Elemente
  14. };
  15.  
  16. int PUNKT::zaehl=1;
  17.  
  18. void PUNKT::verschiebe(int dx, int dy) {
  19.     x=dx;
  20.     y=dy;
  21. }
  22.  
  23. void PUNKT::ausgabe() {
  24.     std::cout << zaehl << " Punkt " << x << "/" << y << std::endl;
  25. }
  26.  
  27. int main(int count, char **args) {
  28.  
  29.     std::vector<PUNKT> test;
  30.     test.push_back(PUNKT(2,3));
  31.     test.push_back(PUNKT(2,3));
  32.     test.push_back(PUNKT(2,3));
  33.     test[0].ausgabe();
  34.     test.clear();
  35.     test[0].ausgabe();
  36.  
  37.     return 0;
  38. }
Success #stdin #stdout 0s 3432KB
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stdin
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Standard input is empty
stdout
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-2 Punkt 2/3
-5 Punkt 2/3
https://ideone.com/Qrj8uj
language:
C++ (gcc 8.3)
created:
12 years ago
visibility:
public

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