Polymorphism: Difference between revisions

import std.stdio;

class Point {

int x, y;

this(int x0=0, int y0=0) { x = x0; y = y0; }

int getX() { return x; }

void setX(int x) { this.x = x; }

int getY() { return y; }

void setY(int y) { this.y = y; }

}

class Circle : Point {

int r;

this(int x0=0, int y0=0, int r0=0) { super(x0,y0); r=r0; }

this(Point p, int r0=0) { super(p.getX,p.getY); r = r0; }

int getR() { return r; }

void setR(int r) { this.r = r; }

}

void main() {

auto p = new Point();

auto c = new Circle();

writefln(p);

writefln(c);

}