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  1. #include <iostream>
  2.  
  3. using std::cout;
  4. using std::endl;
  5.  
  6. /* Class Shape */
  7. class Shape
  8. {
  9. protected:
  10.     int width, height;
  11. public:
  12.     Shape( int a=0, int b=0)
  13.     {
  14.         width = a;
  15.         height = b;
  16.     }
  17.  
  18.     int area()
  19.     {
  20.         cout << "Parent class area :" <<endl;
  21.         return 0;
  22.     }
  23. };
  24.  
  25.  
  26. /* Class Triangle */
  27. class Triangle: public Shape
  28. {
  29. public:
  30.     Triangle( int a=0, int b=0)
  31.     {
  32.         Shape(a, b);
  33.     }
  34.     int area ()
  35.     {
  36.         cout << "Triangle class area :" <<endl;
  37.         return (width * height / 2);
  38.     }
  39. };
  40.  
  41. int main( )
  42. {
  43.     Triangle tri(10,7);
  44.  
  45.     tri.Shape::area();
  46.  
  47.     std::cout << " versus " << std::endl;
  48.  
  49.     tri.Triangle::area();
  50. }
Success #stdin #stdout 0s 3340KB
comments (?)
stdin 
Standard input is empty
stdout 
Parent class area :
 versus 
Triangle class area :
https://ideone.com/x6zP9t
language:
C++14 (gcc 8.3)
created:
10 years ago
visibility:
public

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