fork download
copy 
  1. #include <stdio.h>
  2.  
  3. typedef struct Point {
  4.     float x,//abscice
  5.           y;//ordonate
  6. } TPoint;
  7.  
  8. typedef struct Circle {
  9.     TPoint O;
  10.     float R;
  11. } TCircle;
  12.  
  13. float sqrt2(float n) {
  14.     float x = n,
  15.           y = 1.0,
  16.           eps = 0.0000001;
  17.  
  18.     while(x-y>eps) {
  19.       x = (x+y)/2;
  20.       y = n / x;
  21.     }
  22.     return x;
  23. }
  24.  
  25. float sqr(float x) {return x*x;}
  26.  
  27. int main(int argc, char const *argv[]) {
  28.  
  29.   float x,y,R,//the circle
  30.         x0,y0;//the point
  31.   printf("Introduceti Cercul: C(O,R)\n");
  32.   scanf("%f %f %f", &x,&y,&R);
  33.   printf("Introduceti Point: P(x,y)\n");
  34.   scanf("%f %f", &x0,&y0);
  35.  
  36.   float dist = sqrt2(sqr(x-x0)+sqr(y-y0));
  37.   printf("Distance from the center of the circle to the Point = %f\n",dist);
  38.   dist -= R;
  39.  
  40.   if(dist < 0) {
  41.      printf("%s\n", "The point is inside the Circle.");
  42.   } else if(dist == 0) {
  43.      printf("%s\n", "The point is on the Circle.");
  44.   } else {
  45.      printf("%s\n", "The point is outside the Circle.");
  46.   }
  47.  
  48.   return 0;
  49. }
  50.  
Success #stdin #stdout 0.01s 5388KB
comments (?)
stdin
copy 
0 0 2
1 1
stdout
copy 
Introduceti Cercul: C(O,R)
Introduceti Point: P(x,y)
Distance from the center of the circle to the Point = 1.414214
The point is inside the Circle.
https://ideone.com/X5gn60
Check whether a point position is inside, outside or on the Circle.
language:
C (gcc 8.3)
created:
1 year ago
visibility:
secret

Share or Embed source code

Discover > Sphere Engine API

The brand new service which powers Ideone!

Discover > IDE Widget

Widget for compiling and running the source code in a web browser!