Question

12. Declare the operator< as a friend function. }: II This is the end of the ThreeDimensions class 13. Write the operator< function for the ThreeDimensions class. It shall print the values of x, y, z, and length to the ostream object that is the left hand operand. 14. Write a main funcdon that has a TwoDimension object with dimensions 3 and 4 ThreeDimension object with dimensions 12, 16, and 15. Print these two objects. and a 15a. Could the operator<< function that works with the TwoDimensions class be written as a member function? (yes or no) 15b. Why?

Answer 1

#include<iostream>
using namespace std;

class TwoDimensions{
   private:
       double x,y;
   public:
   TwoDimensions(double _x , double _y){
       x=_x;
       y=_y;
   }
   friend ostream & operator << (ostream & out, const TwoDimensions & ob){
       out<<"x : "<<ob.x<<" y: "<<ob.y<<"\n";
       return out;
   }
};

class ThreeDimensions{
   private:
       double x,y,z;
   public:
   ThreeDimensions(double _x , double _y , double _z){
       x=_x;
       y=_y;
       z = _z;
   }
   friend ostream & operator << (ostream & out, const ThreeDimensions & ob){
       out<<"x : "<<ob.x<<" y: "<<ob.y<<" z: "<<ob.z<<"\n";
       return out;
   }
};

int main(){
   TwoDimensions ob1(3,4);
   ThreeDimensions ob2(12,16,15);
  
   cout<<ob1;
   cout<<ob2;
   return 0;
  
}
//No it could not be a member function