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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* * *** * * ** ** * *** ** * *** * ** * * * * gety();
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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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}

int main()

{


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

}

Answer 2

Hidden content!
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using * * std;



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

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

}


** * * * *

{
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}



int main()

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


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** * * * * 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;

}