Find the coordinate in which the point (x,y) lies
C program to accept x and y coordinate of a point and find the coordinate in which the point lies.
Coordinate system can be depicted as follows:
Program
#include<stdio.h>
#include<conio.h>
void main()
{
int x, y;
printf("Enter the x and y coordinates of a point\t:");
scanf("%d%d",&x,&y);
if(x == 0 && y == 0)
printf("\nPoint lies at the origin");
else if(x > 0 && y > 0)
printf("\nPoint lies in first quadrant");
else if(x < 0 && y > 0)
printf("\nPoint lies in second quadrant");
else if(x < 0 && y < 0)
printf("\nPoint lies in third quadrant");
else if(x > 0 && y < 0)
printf("\nPoint lies in fourth quadrant");
else if(y == 0)
printf("\nPoint lies on X-axis");
else if(x == 0)
printf("\nPoint lies on Y-axis");
getch();
}
Output
********** Run1 **********
Enter the x and y coordinates of a point :4
5
Point lies in first quadrant
********** Run1 **********
Enter the x and y coordinates of a point :4
-3
Point lies in fourth quadrant
Explanation
There are 7 conditions that needs to be checked to determine where does the points lies in the cartesian plane
| If at origin then, | x = 0 and y = 0 |
| If in first quadrant then, | x > 0 and y > 0 |
| If in second quadrant then, | x < 0 and y > 0 |
| If in third quadrant then, | x < 0 and y < 0 |
| If in fourth quadrant then, | x > 0 and y < 0 |
| If in x-axis then, | y = 0 |
| If in y-axis then, | x = 0 |