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  1. #include <iostream>
  2. #include <math.h>
  3.  
  4.  
  5. struct Point
  6. {
  7. 	float x;
  8. 	float y;
  9.  
  10. 	float distance( Point & p )
  11. 	{
  12. 		return sqrt( ( ( p.x - x ) * ( p.x - x ) ) + ( ( p.y - y ) * ( p.y - y ) ) );
  13. 	}
  14. };
  15.  
  16.  
  17. struct Line
  18. {
  19. 	Point start;
  20. 	Point end;
  21.  
  22. 	float length()
  23. 	{
  24. 		return start.distance( end );
  25. 	}
  26.  
  27. 	Point midpoint()
  28. 	{
  29. 		return { ( start.x + end.x ) / 2, ( start.y + end.y ) / 2 };
  30. 	}
  31. };
  32.  
  33.  
  34.  
  35. Line lines[2]
  36. {
  37. 	{ {  0,  0 }, {  30,  40 } },
  38. 	{ { 10, 10 }, {  20,  20 } },
  39. };
  40.  
  41.  
  42. int main()
  43. {
  44. 	for ( int i = 0; i < 2; i++ )
  45. 	{
  46. 		Line & line = lines[i];
  47.  
  48. 		Point start = line.start;
  49. 		Point end = line.end;
  50. 		float length = line.length();
  51. 		Point midpoint = line.midpoint();
  52.  
  53. 		printf(" Length of line [ (%5.2f, %5.2f), (%5.2f, %5.2f) ] is %.2f, midpoint is (%5.2f, %5.2f)\n",
  54. 			start.x,
  55. 			start.y,
  56. 			end.x,
  57. 			end.y,
  58. 			length,
  59. 			midpoint.x,
  60. 			midpoint.y
  61. 		);
  62. 	}
  63.  
  64. 	return 0;
  65. }
Success #stdin #stdout 0.01s 5516KB
comments (?)
stdin 
Standard input is empty
stdout 
 Length of line [ ( 0.00,  0.00), (30.00, 40.00) ] is 50.00, midpoint is (15.00, 20.00)
 Length of line [ (10.00, 10.00), (20.00, 20.00) ] is 14.14, midpoint is (15.00, 15.00)
https://ideone.com/QXuJNa
language:
C++ 4.3.2 (gcc-4.3.2)
created:
3 years ago
visibility:
secret

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