Constructor, Scope resolution, class, object

PHOTO EMBED

Sat Jun 25 2022 10:13:06 GMT+0000 (UTC)

Saved by @Ranjan_kumar #c++

//There have 3 constructors with same name called overloading
                  

#include <bits/stdc++.h>
using namespace std;
class rectangle             //class
{
   private:
   int length;
   int breadth;
   public:
   
   rectangle()              //non-parameterised constructor
   {
      length=5;
      breadth=4;
   }
   rectagle(int l=5,int b)        //parameterised constructor
   {
      setLength(l);
      setBreadth(b);
   }
   rectangle(rectangle &r)       //copy constructor
   {
      length=r.length;
      breadth=r.breadth;
   }
   void setLength(int l)
   {
      if(l>0) length=l;
      else length=1;
   }
   void setBreadth(int b)
   {
      if(b>0) breadth=b;
      else breadth=1;
   }
   int getLength()
   {
      return length;
   }
   int getBreadth();     //Define outside class with scope resolution

   int area()
   {
      return length*breadth;
   }
   int perimeter();      //Define outside class with scope resolution
};

int rectangle::perimeter()   //Define outside class with scope            {                                    // resolution
      return 2*(length+breadth);
     }
                            
  
int rectangle::getBreadth()   //Define outside class with scope          {                                  //resolution
      return breadth;
   }

int main()
{
rectangle r1;                 //object r1
r1.setLength(15);
r1.setBreadth(2);
rectangle r2(r1);             //object r2
cout<<r1.area()<<"\n";
cout<<r1.perimeter()<<"\n";
cout<<r2.perimeter()<<"\n";
	return 0;
}
content_copyCOPY