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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* * *** * ** ** * ******** * ** ***** *** * * ** dist(ThreeD other);
* * **** * * ***** * * * * ** ***** * *** ** * ** * * getx();
* * * ***** * ** * **** * ** *** * ** * 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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* ** * ***** * ** *** a(i,j,k);
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* * ** * * * b(i,j,k);
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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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*** * ** * * ** **
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*** * **** **** * * *** ** * * * 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;

}