ch2/exercises1/exe11.c

   1 /*To find whether a point lies on,inside or outside a circle */
   2
   3 #include<stdio.h>
   4 #include<math.h>
   5 #include<stdlib.h>
   6
   7 int main()
   8 {
   9         int x1,y1,rad;
  10         int x,y;
  11         float d;
  12         int temp;
  13
  14         printf("Enter the center of the circle X1, Y1 :");
  15         scanf("%d %d",&x1,&y1);
  16         printf("Enter the radius of the circle:");
  17         scanf("%d",&rad);
  18
  19         printf("Enter the point (x,y):");
  20         scanf("%d %d",&x,&y);
  21
  22         /*computing the distance between the two points*/
  23         temp = pow(x1-x,2)+pow(y1-y,2);
  24         d = sqrt(temp);
  25
  26
  27         if(d==rad)
  28                 printf("The point (%d,%d) lies on the circle\n",x,y);
  29         else if(d<rad)
  30                 printf("The point lies inside the circle\n");
  31         else
  32                 printf("The point lies outside the circle\n");
  33
  34         return 0;
  35 }