Code:
#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;
}
Output:
The Equation of the 1st line is : (3)x+(0)y+(-3) = 0
Enter the point:1 4
The point lies on the line
The Equation of the 1st line is : (5)x+(-1)y+(-25) = 0
Enter the point:1 1
The point lies below the line or left side of the line
The Equation of the 1st line is : (-6)x+(8)y+(-24) = 0
Enter the point:19 21
The point lies above the line or right side of the line
------------------
(program exited with code: 0)
Press return to continue
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