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  1. #include <iostream>
  2.  
  3. class X {
  4. public:
  5.   static unsigned int counter;
  6.  
  7.   X() {
  8.     ++counter;      
  9.   }
  10. };
  11.  
  12. unsigned int X::counter = 0;
  13.  
  14. int main() {
  15.   X x;
  16.   std::cout << x.counter;
  17.  
  18.   return 0;
  19. }
Success #stdin #stdout 0s 2896KB
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1
https://ideone.com/5GvGW5
language:
C++14 (gcc 8.3)
created:
11 years ago
visibility:
public

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