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();
* * * ** * ** * ** * * **

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

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

}

double ThreeD::getx()

{
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}

double ThreeD::gety()

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

}

double ThreeD::getz()

{
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}



void ThreeD::dist(ThreeD other)

{
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* *** * ** * ** *** * * * ***** ** * **
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* * ***** * ** ** * * * **
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}

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

}