C++ Make a new class Point3D which inherits from the Point2D class you have. The

Question

C++

Make a new class Point3D which inherits from the Point2D class you have. The class has one more data member for the z coordinate. There are two constructors, a default one and one with 3 coordinates. Add the new member functions getZ, setZ and moveAlongZ. Override moveToOrigin and printLocation to do the right thing for all 3 coordinates.
Make a few Point3D objects and exercise their functionality.

here is the code:

#include <iostream>
#include <string>

using namespace std;

class Point2D
{
private:
double x;
double y;
public:
Point2D() { x = 0; y = 0; }
Point2D(double xVal, double yVal) { x = xVal; y = yVal; }
double getX() {
  return x;
}

double getY() {
  return y;
}

void setX(double xVal) {
  x = xVal;
}

void setY(double yVal) {
  y = yVal;
}

void moveHorizontally(double xVal) {
  x += xVal;
}

void moveVertically(double yVal) {
  y += yVal;
}

void moveToOrigin() {
  x = 0;
  y = 0;
}

void printLocation() {
  cout << "Point at (" << x << ", " << y << ")" << endl;
}
};

int main()
{
Point2D p1;
p1.setX(3); p1.setY(2);
p1.printLocation();
p1.moveHorizontally(5);
p1.printLocation();

p1.moveVertically(5);
p1.printLocation();

return 0;
}

Explanation / Answer

The Point3D class will be as below:

class Point3D : public Point2D{
private:
double z;

Point3D()
{z=0;
}

Point3d(double xVal,double yVal, double zVal)
{
Point2D(xVal,yVal);
z=zVal;
}

double getZ()
{
return z;
}

void setZ(doube zVal)
{
z = zVal;
}

void moveAlongZ(double zVal)
{
z+= zVal;
}

void moveToOrigin()
{
setX(0);
setY(0);
z=0;
}

void printLocation()
{
double x = getX();
double y = getY();
cout<<"Point at(<<x<<","<<y<<","<<z")"<<end;
}
}

}

and main funciton will look like

int main()
{
Point2D p1;
p1.setX(3); p1.setY(2);
p2.set(5);
p1.printLocation();
p2.printLocation();
p1.moveHorizontally(5);
p1.printLocation();
p1.moveVertically(5);
p1.printLocation();
p2.moveAlongZ(4);
pr.printLocation();

return 0;
}

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