CONSTRUCTOR OVERLOADING

Program to find the area of a rectangle using constructor overloading.

#include<iostream.h>

#include<conio.h>

class area

{

   int a,l,b;

   public:

   area() // simple constructor definition.

   {

      l=5;

      b=6;

      cout<<"Simple constructor called\n";

      cout<<"length="<<l<<"\nbreadth="<<b<<endl;

   }

   area(int x,int y) // parameterised constructor

   {

      l=x;

      b=y;

   }

   void calc();

   void print();

};

void area::calc()

{

    a=l*b;

}

void area::print()

{

    cout<<"Area is : "<<a<<endl;

}

void main()

{

    int l,b;

    clrscr();

    area a1; // simple constructor is called.

    a1.calc();

    a1.print();

    cout<<"Enter length and breadth for parameterised         constructor:\n";

    cin>>l>>b;

    area a2(l,b); // parameterised constructor is called.

    a2.calc();

    a2.print();

    getch();

}

output