C++ this指针

#include iostreamusing namespace std;class Box {public:// Constructor definitionBox(double l = 2.0, double b = 2.0, double h = 2.0) {

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#include <iostream>

using namespace std;

class Box {
   public:
      // Constructor deFinition
      Box(double l = 2.0, double b = 2.0, double h = 2.0) {
         cout <<"Constructor called." << endl;
         length = l;
         breadth = b;
         height = h;
      }
      double Volume() {
         return length * breadth * height;
      }
      int compare(Box Box) {
         return this->Volume() > Box.Volume();
      }

   private:
      double length;     // Length of a Box
      double breadth;    // Breadth of a Box
      double height;     // Height of a Box
};

int main(voID) {
   Box Box1(3.3, 1.2, 1.5);    // Declare Box1
   Box Box2(8.5, 6.0, 2.0);    // Declare Box2

   if(Box1.compare(Box2)) {
      cout << "Box2 is smaller than Box1" <<endl;
   } else {
      cout << "Box2 is equal to or larger than Box1" <<endl;
   }

   return 0;
}
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