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  1. #include<stdio.h>
  2. #include<stdlib.h>
  3. #include<math.h>
  4.  
  5. #define pi 2*acos(0)
  6.  
  7. struct Point2D
  8. {
  9.     double x,y;
  10.  
  11.     Point2D(double x_pos=0,double y_pos=0){
  12.         x = x_pos;y=y_pos;
  13.     }
  14.  
  15.     double Distance(Point2D B){
  16.         return sqrt((x-B.x)*(x-B.y)+(y-B.y)*(y-B.y));
  17.     }
  18. };
  19.  
  20. struct Circle
  21. {
  22.     Point2D center;
  23.     double radius;
  24.  
  25.     Circle(double x_pos,double y_pos, double r){
  26.         center.x=x_pos;
  27.         center.y=y_pos;
  28.         radius = r;
  29.     }
  30.  
  31.     double Area(){
  32.         return pi*radius*radius;
  33.     }
  34. };
  35.  
  36.  
  37.  
  38. int main(){
  39.     Circle c = Circle(0,0,6);
  40.  
  41.     printf("%lf\n",c.Area());
  42.  
  43.     return 0;
  44. }
Success #stdin #stdout 0.01s 5304KB
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https://ideone.com/PtpMgX
language:
C++14 (gcc 8.3)
created:
1 year ago
visibility:
public

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