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;

}