C++ Program to Apply Above-Below-on Test to Find the Position of a Point with respect to a Line

#include<time.h>

#include<stdlib.h>

#include<iostream>

#include<math.h>

using namespace std;

const int LOW = 0;

const int HIGH = 10;

int main(int argc, char **argv)

{

    time_t seconds;

    time(&seconds);

    srand((unsigned int) seconds);

    int x1, x2, y1, y2;

    x1 = rand() % (HIGH - LOW + 1) + LOW;

    x2 = rand() % (HIGH - LOW + 1) + LOW;

    y1 = rand() % (HIGH - LOW + 1) + LOW;

    y2 = rand() % (HIGH - LOW + 1) + LOW;

    cout << "The Equation of the 1st line is : (" << (y2 - y1) << ")x+(" << (x1

            - x2) << ")y+(" << (x2 * y1 - x1 * y2) << ") = 0\n";

    int x, y;

    cout << "\nEnter the point:";

    cin >> x;

    cin >> y;

    int s = (y2 - y1) * x + (x1 - x2) * y + (x2 * y1 - x1 * y2);

    if (s < 0)

        cout << "The point lies below the line or left side of the line";

    else if (s > 0)

        cout << "The point lies above the line or right side of the line";

    else

        cout << "The point lies on the line";

    return 0;

}