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  1. #include <iostream>
  2.  
  3. using namespace std;
  4.  
  5. class Foo {
  6.     int x = 0;
  7. public:
  8.     void inc() { x++; }
  9.     int  get() { return x; }
  10. };
  11.  
  12. class Bar {
  13.     Foo *f;
  14. public:
  15.     Bar(Foo *foo) { f = foo; }
  16.     int get() const { f->inc(); return f->get(); }
  17. };
  18.  
  19. int bar(const Bar &bar) {
  20.     return bar.get();
  21. }
  22.  
  23. int main() {
  24.     Foo f;
  25.     Bar b(&f);
  26.     cout << f.get() << endl;
  27.     cout << bar(b)  << endl;
  28.     cout << f.get() << endl;
  29. }
Success #stdin #stdout 0s 2852KB
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language:

						
C++14 (gcc 8.3)

					

					

						
created:
								
						
13 years ago

					

					

						
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