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;

}