Angle conversion cpp program

CPP program for angle conversion

#include<iostream.h>

#include<conio.h>

class radian

{ private:

          float rad;

  public:

          radian();

          radian(float);

          void display();

};

radian::radian()

{        rad=0.0;}

radian::radian(float d)

{        rad=d;}

void radian::display()

{        cout<<rad;}

class degree

{ private:

           int deg;

  public:

          degree();

          operator radian();

          void getdata();

          void display();

};

degree::degree()

{        deg=0.0;}

void degree::getdata()

{        cout<<" Enter the Angle in Degree : ";

          cin>>deg;

}

degree::operator radian()

{        float temp;

          temp=deg*(3.14/180);

          return radian(temp);

}

void degree::display()

{        cout<<deg;}

void main()

{        degree d;

          radian r;

          clrscr();

          d.getdata();

          r=d;

          d.display();

          cout<<" Degree is equal to ";

          r.display();

          getch();

}