WAP for default & parameterised constructor

#include<iostream.h>

#include<conio.h>

class Line{

  public:

Line(double len);

void setlength(double len);

double getlength(void);

  private:

 double length;

};

Line::Line(double len)

{

  length=len;

}

void Line::setlength(double len)

{

  length=len;

}

double Line::getlength(void)

{

   return length;

}

void main(){

 Line l1(6.3);

 clrscr();

 cout<<"

 Default : "<<l1.getlength();

 l1.setlength(3.44);

 cout<<"

 Paramerised : "<<l1.getlength();

 getch();

}