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

{
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}

double ThreeD::getx()

{
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}

double ThreeD::gety()

{
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}

double ThreeD::getz()

{
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}



void ThreeD::dist(ThreeD other)

{
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*** ** *** * * ******* *** * * * ** * is: * * *** ** ** **** ** *



}

int main()

{


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


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

}

Answer 2

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



using * ** std;



class Point{
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* * * **** ** * ****
** **** **** * ** *** *** *** xpos, double ypos, double zpos);
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* *** *** * * * * * *
** * * * * * * * *** ***
**** ** ****** **** * * ** ** xpos, double ypos, double zpos);
* ** ** ** * *
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* ** * ** ****** * * ** ** * 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;

}