05-11 Lab exercise 2: 3D points class inherited from 2D point class

Question

Suppose we have the following two points in a 3D space:

The distance between point1 and point2 is:

Please create ThreeD class inherited from Point class which is used in previous exercise and then use ThreeD class to calculate the distance between two 3D points.

Hint:

• Add two more public functions to Point class to get the value of X and Y
• ThreeD initialize: 

• class ThreeD:public Point

• The following constructor of ThreeD class reuses the constructor of the Point class and the only way values can be passed to the Point constructor is via the use of a member initialization list.

• ThreeD(double i, double j, double k):Point(i,j){z = k;}

   

Example input:

1 1 1
2 3 4

Example output:

Distance is: 3.74166

Comments

Called for Help

Answer 1

Hidden content!
#include <iostream>

#include<math.h>

using namespace std;



class ThreeD
* ** * * *** **
** ***** * * **** * * * *
*** * ***** * * ** ** ** * * *** * **** **** x,y,z;
* * **** * * *** * * **** * **
*** * ** * *** * ** *** * * * ** * * *** i, double j, double k);
**** * * ** * * * ***** * * * * * ** * ***** dist(ThreeD other);
*** ** ** **** ** ** * * * * ****** * getx();
**** **** * * *** * **** **** * **** * ** ** ** *** * * gety();
*** ** * * ** **** * ** * * ** * * * *** *** getz();
* ***** *** ** ** * * *

ThreeD::ThreeD(double i, double j, double k)

{
** **** * ** **** * ** * **
* * ***** * * *
** * ** ******** * ***

}

double ThreeD::getx()

{
* ******* ** * * * * * * x;

}

double ThreeD::gety()

{
*** **** ** ** ** *** y;

}

double ThreeD::getz()

{
* ** *** *** * * * ** *** z; * * * * ***** *** * * ******** **** ** * * * ** ** *

}



void ThreeD::dist(ThreeD other)

{
** ** ** ******* * * * * * sol;
****** * *** ***** * * *** * ** x2,y2,z2;
* * * * *** ** ****** ** * ** * ***** **
* * * * ** * * *** ***** ** **
** ***** ** * * * * ** *** * * *
*** *** *** ** * ** * * *
* ** ** * ** ** ****** *
**** * * * *** *** **** * * * * *** * is: *** ** * **** * ** ****** *



}

int main()

{


** * * * * ** **** * *** i,j,k;
**** * ** * ** **** * ***** * * * ** * * * ** * ** *
** ** * * * *** * * * * a(i,j,k);
* * ** ***** **** ** *** ** ** * ** * * * ** *
** * *** *** *** * ** * * b(i,j,k);
* * ** * * * ******* *** * *


* ** ** * *** ** ** ** ** * * 0;

}

Answer 2

Hidden content!
** ** * * *** *
** ** **
** * ** * * * **
* * * * * **** * ** *



using **** std;



class Point{
* * * ** * **
* * ** **** ** *** * *
* * ** * ** * * ** *** * xpos, double ypos, double zpos);
* * ** ***** * * ******* * * *
* * *** *** ***** * * * *
*** **** ***** * * *** ** ** ******
** * * ** * * *** ***** ** ** xpos, double ypos, double zpos);
**** * * ** * *
** * **** ** *** * * *** * * x;
* * ** ** * * **** * y;
** * * * *** * ** z;

};


****** **

{
*** * **** ***** ** = 0;
* **** *** * * * ** * = 0;
***** * * *** * * * = 0;

}


**** * ** xpos, double ypos, double zpos)

{
* *** * ** ** ** * * * = xpos;
** * * ****** *** *** = ypos;
* * * * **** *** ****** * = zpos;

}


** *** **

{
* ** * * * *** * * ** * * *** x;

}


** * **** ** *

{
* * ** * * ** * * * * y;

}


* **** **

{
** ** * * * * ******* z;

}



void * *** * * * xpos, double ypos, double zpos)

{
* *** *** **** ** = xpos;
* * * *** * * = ypos;
*** * * * * ** * = zpos;

}


** **
* * * ** *
***** * *** ***** * * * ** * * Apos, Point Bpos);
* * * ** * * * * * *** ****
*** ** ** *
* ** ******* * ** A;
* ** ****** * **** * * ** * B;

};


* * * ** Apos, Point Bpos)

{
* ****** ** ** **** * * * * **** * ** **
*** * ******* ** * * *** * * * * ** ** ** * * **

}


* ** * ** ***

{
* ** ****** ** ** ***** *** * * * * - ** * 2.0) + *** ** - *** 2.0) + * * ** - ** * 2.0));

}



int main()

{
* * ** * * * * * ** * ax, ay, az, bx, by, bz;


* *** *** * ** ***** * * * * ax * *** * ay * * ** az * ** ** * bx * * *** * by ** * ** bz;
*** *** * * ** * * * * A(ax, ay, az);
* * *** *** * * * * * B(bx, by, bz);


* * * * *** * ** * * Z(A, B);


****** * * **** *** * * * * ** * * * * * ** is: *** * * * ** * * ** * *** endl;


* * ** ***** * * ** * *** ** 0;

}

Comments

This is not correct answer. We require ThreeD class is inherited from Point class which is used in previous exercise

Answer 3

Hidden content!
class Point

{
* ** ** *** * *** ** * **
*** ** * * * ****** * x, y; // x and y ***** ** ** *
** * ** ** * ** *

*** * * ** ** ** * ** * * * * * **** * inline ** **** of * *** *
* * ** * * ** ** ***** * * ** i, double ** * * y(j){}

* *** ** * * *** * * * **
* * * * * * ** * ** *** ** inline ** * of member ** *
* ** * ** *** **** * *** ** * *** * *** = NewX;}
** ****** *** * * * * * ** = NewY;}
** * * * * * * * ** getX() const ** * x;}
** * ****** ** ****** * ** getY() const * * y;}

};



class * *** Point

{
** *** ** ** *** *
* ** * * *** ** * **** * * ** ** **** **** * * z;
* *** *** ** * * * **

*** * ** * * * * * * * *** *** **** * ** ** ** ** * Inline * * *** of ** *
* ** ** * *** **** ** * * of the base class is not * **
**** ** *** ** * The ** * * * * of ThreeD class reuses the

***** * ** * * ** * ** * * * of the Point class and the only way * *
* * * *** * ** **** * *** can be * * to the Point * * **** is via the use
*** * * ** ** * *** of a * * **** * list.
* ***** * ** * ** * **** *** * i, double j, * * * = k;}


* **** * * * * *** ** * ** * * ** * = **
*** ** ** * * *** ** * * *** z;}

};





int main()

{
* ** * ** * * * * * * * * * ** 1);
* *** *** * * * * * *** 2, 3);
*** * *** * * * ** ** *** * * * * * *** for the 3d object are: * ** * ** * **
* * * * **** **** * *** **** * * * * * * ** * ** ** * * * ** * * * ** * * * ** * ** ** ** * * endl;
* *** * **** * ***** *** *** 0;

}