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#include <iostream>
 
using namespace std;
 
// Base class
class Shape {
	 protected:
      int width;
      int height;
 
   public:
 
   Shape(int w,int h){
   	width=w;
   	height=h;
   }
 
      // pure virtual function providing interface framework.
      virtual int getArea() = 0;
 
 
};
 
// Derived classes
class Rectangle: public Shape {
   public:
      int getArea() { 
         return (width * height); 
      }
};
 
class Triangle: public Shape {
   public:
      int getArea() { 
         return (width * height)/2; 
      }
};
 
int main(void) {
   Rectangle Rect(5,7);
   Triangle  Tri(8,5);
 
 
 
   // Print the area of the object.
   cout << "Total Rectangle area: " << Rect.getArea() << endl;
 
 
 
   // Print the area of the object.
   cout << "Total Triangle area: " << Tri.getArea() << endl; 
 
   return 0;
}

prog.cpp: In function ‘int main()’:
prog.cpp:40:22: error: no matching function for call to ‘Rectangle::Rectangle(int, int)’
    Rectangle Rect(5,7);
                      ^
prog.cpp:25:7: note: candidate: constexpr Rectangle::Rectangle(const Rectangle&)
 class Rectangle: public Shape {
       ^~~~~~~~~
prog.cpp:25:7: note:   candidate expects 1 argument, 2 provided
prog.cpp:25:7: note: candidate: constexpr Rectangle::Rectangle(Rectangle&&)
prog.cpp:25:7: note:   candidate expects 1 argument, 2 provided
prog.cpp:41:21: error: no matching function for call to ‘Triangle::Triangle(int, int)’
    Triangle  Tri(8,5);
                     ^
prog.cpp:32:7: note: candidate: constexpr Triangle::Triangle(const Triangle&)
 class Triangle: public Shape {
       ^~~~~~~~
prog.cpp:32:7: note:   candidate expects 1 argument, 2 provided
prog.cpp:32:7: note: candidate: constexpr Triangle::Triangle(Triangle&&)
prog.cpp:32:7: note:   candidate expects 1 argument, 2 provided

Standard output is empty