18. WAP to determine whether a point (x,y) lies inside a circle, on the circle or outside the circle.

#include<stdio.h>
#include<conio.h>
#include<math.h>
void main()
{
   int x1,y1,x2,y2,radius,dist,firstPart,secondPart;
   printf("Enter the X co-ordinate of the Circle: ");
   scanf("%d",&x1);
   printf("Enter the Y co-ordinate of the Circle: ");
   scanf("%d",&y1);
   printf("Enter the radius Circle: ");
   scanf("%d",&radius);
   printf("Enter the X co-ordinate of the Point: ");
   scanf("%d",&x2);
   printf("Enter the Y co-ordinate of the Point: ");
   scanf("%d",&y2);
   firstPart = pow( x1 - x2 , 2 );
   secondPart = pow( y1 - y2 , 2 );
   dist = pow( firstPart + secondPart , 0.5 );
   if(dist > radius)
      printf("\nPoint lies outside the Circle.");
   else if(dist < radius)
      printf("\nPoint lies inside the Circle.");
   else
    printf("\nPoint lies on the Circle.");
   getch();
}


Output:

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