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  1. #include <bits/stdc++.h>
  2. using namespace std;
  3.  
  4. const double eps = 1e-9;
  5.  
  6. bool isEqual(double a, double b) {
  7. 	return fabs(a-b) < eps;
  8. }
  9.  
  10. bool isLessOrEqual(double a, double b) {
  11. 	return (isEqual(a, b) || a < b);
  12. }
  13.  
  14. bool isLess(double a, double b) {
  15. 	return (a < b && !isEqual);
  16. }
  17.  
  18. struct point {
  19. 	double x, y;
  20. 	// constructor
  21. 	point() {
  22. 		// cout << "Constructor kosong" << endl;
  23. 	}
  24. 	point(double _x, double _y) {
  25. 		// cout << "Constructor dgn 2 double" << endl;
  26. 		x = _x;
  27. 		y = _y;
  28. 	}
  29. 	double euclidean(point other) {
  30. 		return sqrt((x-other.x)*(x-other.x) + (y-other.y)*(y-other.y));
  31. 	}
  32. 	double manhattan(point other) {
  33. 		return abs(x-other.x) + abs(y-other.y);
  34. 	}
  35. };
  36.  
  37. const double PI = acos(-1);
  38.  
  39. struct circle {
  40. 	point center;
  41. 	double radius;
  42. 	circle() {}
  43. 	circle(point _center, double _radius) {
  44. 		center = _center;
  45. 		radius = _radius;
  46. 	}
  47. 	double area() {
  48. 		return PI*radius*radius;
  49. 	}
  50. 	bool isTouching(circle other) {
  51. 		double distance = center.euclidean(other.center);
  52. 		return isLessOrEqual(distance, radius+other.radius);
  53. 	}
  54. };
  55.  
  56. int main() {
  57. 	circle l1, l2;
  58. 	cin >> l1.center.x >> l1.center.y >> l1.radius;
  59. 	cin >> l2.center.x >> l2.center.y >> l2.radius;
  60. 	if(l1.isTouching(l2))
  61. 		cout << "bersentuhan" << endl;
  62. 	else
  63. 		cout << "tidak bersentuhan" << endl;
  64. 	return 0;
  65. }
Success #stdin #stdout 0.01s 5280KB
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bersentuhan
https://ideone.com/vMhrSB
language:
C++ (gcc 8.3)
created:
14 days ago
visibility:
public

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