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  1. #include <iostream>
  2.  
  3. class Foo {
  4. public:
  5.     int x;
  6.     virtual void print();
  7. };
  8.  
  9. class Bar: public Foo {
  10. public:
  11.     int y;
  12.     virtual void print();
  13. };
  14.  
  15. void Foo::print() {
  16.     std::cout << "x: " << this->x << '\n';
  17. }
  18.  
  19. void Bar::print() {
  20.     std::cout << "x: " << this->x << " y: " << this->y << '\n';
  21. }
  22.  
  23. void print(Foo foo) {
  24.     foo.print();
  25. }
  26.  
  27. void print2(Foo &foo) {
  28.     foo.print();
  29. }
  30.  
  31. void print3(Foo *foo) {
  32.     foo->print();
  33. }
  34.  
  35. int main() {
  36.     Bar bar;
  37.     bar.x = 5;
  38.     bar.y = 10;
  39.  
  40.     print(bar);
  41.     print2(bar);
  42.     print3(&bar);
  43. }
Success #stdin #stdout 0s 4268KB
comments (?)
stdin
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Standard input is empty
stdout
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x: 5
x: 5 y: 10
x: 5 y: 10
https://ideone.com/yz8Tql
language:
C++14 (gcc 8.3)
created:
6 years ago
visibility:
public

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