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  1. #include "pch.h"
  2. #include <iostream>
  3.  
  4. using namespace std;
  5.  
  6. struct Point //структура (почти класс)
  7. {
  8. 	double x; //поле
  9. 	double y;
  10.  
  11. 	Point()
  12. 	{
  13. 	}
  14.  
  15. 	Point(double xx, double yy = 5) //конструктор
  16. 		: x(xx), y(yy)
  17. 	{
  18. 		if (x < 0)
  19. 			x = 0;
  20. 		if (y < 0)
  21. 			y = 0;
  22. 	}
  23.  
  24. 	double dist() //метод
  25. 	{
  26. 		return sqrt(x * x + y * y);
  27. 	}
  28.  
  29. 	double scl(Point other)
  30. 	{
  31. 		return x * other.x + y * other.y;
  32. 	}
  33. };
  34.  
  35. int main()
  36. {
  37. 	Point p(4.2, 5.3); // экземпляр структуры (объект)
  38.  
  39. 	Point p(3.9);
  40.  
  41. 	Point p2;
  42. 	p2.x = 3.5;
  43. 	p2.y = p.x;
  44.  
  45. 	cout << p.dist() << endl;
  46. 	cout << p.scl(p2) << endl;
  47. }
  48.  
  49.  
Compilation error #stdin compilation error #stdout 0s 0KB
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stdin
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Standard input is empty
compilation info 
prog.cpp:1:10: fatal error: pch.h: No such file or directory
 #include "pch.h"
          ^~~~~~~
compilation terminated.
stdout
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Standard output is empty
https://ideone.com/d3B0Uk
language:
C++ (gcc 8.3)
created:
6 years ago
visibility:
public

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