Merge pull request #446 from Mayuri-cell/Mayuri-cell-patch-4

Circle points

Author: smv1999

General Questions/circle_and_point.c

@@ -0,0 +1,37 @@
+/* Title : To find whether a given point lies on the circumference
+           of the circle , inside the circle or outside the circle .
+
+   Description : User needs to provide the center co-ordinates and radii
+                 of a circle . And the point for which you want to find.
+                 */
+#include<stdio.h>
+#include<conio.h>
+int main()
+{
+  float h , k;
+  printf("\n Enter the X , Y center co-ordinates of a circle : \n");
+  scanf("%f %f",&h ,&k);
+  printf("\n Enter the radius :\n");
+  float radii;
+  scanf("%f",&radii);
+  float eqn;
+  float x ,y;
+  printf("\n Enter the X and Y co-ordinates of point A : \n");
+  scanf("%f %f",&x ,&y);
+  float t=(h*h)+(k*k)-(radii*radii);
+  eqn=(x*x)-(2*h*x)+(y*y)-(2*k*y)+t;
+  printf("Equation of the circle : (x-%0.2f)^2 + (y-%0.2f)^2 -%0.2f \n",h,k,radii*radii);
+  if(eqn<0)
+  {
+    printf("\n Inside the circle ");
+  }
+  else if(eqn>0)
+  {
+    printf("\n Outside the circle ");
+  }
+  else if(eqn==0)
+  {
+    printf("\n On the circumference of the circle .\n");
+  }
+  return 0;
+}