Question

In C++, A point class has the following definition:

class Point{

private:

int x;

int y;

public:

Point(int, int);

A vector has two points as a start point (x,y) and end point (x,y). Write the header file and implementation file of the Vector class containing constructor, other functions, and also a function returning length of Vector determined from start point and end point coordinates. Write also the client code.

Answer 1

----------------------Point.h------------------

#ifndef MY_POINT

#define MY_POINT

#include<iostream>

#include<cmath>

using namespace std;

class Point{

    private:

   

        int x;

        int y;

   

    public:

   

        Point(int, int);

        int getX();

        int getY();

};

#endif

-------------------------point.cpp-------------------------

#include "Point.h"

Point::Point(int x, int y)

{

    this->x = x;

    this->y = y;

}

int Point::getX()

{

    return this->x;

}

int Point::getY()

{

    return this->y;

}

-----------------------Vector.h------------------------

#include "Point.cpp"

#include<cmath>

class Vector{

    // point class object to store the information of two points

    Point *p1, *p2;

   

    public:

       

        // constructor

        Vector(int x1, int y1, int x2, int y2);

       

        // getter methods

        Point* getP1();

        Point* getP2();

       

        double calculateLengthOfvector();

};

-------------------------Vector.cpp-----------------------------

#include "Vector.h"

// constructor

Vector::Vector(int x1, int y1, int x2, int y2)

{

    this->p1 = new Point( x1, y1 );

    this->p2 = new Point( x2, y2 );

}

// return the pointer to first point

Point* Vector::getP1()

{

    return this->p1;

}

// return the pointer to second point

Point* Vector::getP2()

{

    return this->p2;

}

double Vector::calculateLengthOfvector()

{

    // calculate distance between two points

    double dist = sqrt( pow( this->p1->getX() - this->p2->getX() , 2 ) + pow( this->p1->getX() - this->p2->getY(), 2 ) );

}

---------------------main.cpp------------------

#include "Vector.cpp"

int main()

{

    int x1, y1, x2, y2;

   

    cout<<"Enter coordinates for first point : ";

    cin>>x1>>y1;

   

    cout<<"Enter coordinates for second point : ";

    cin>>x2>>y2;

   

    Vector v1(x1, y1, x2, y2);

   

    cout<<"Distance of vector : "<<v1.calculateLengthOfvector();

   

    return 0;

}