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  1. #include <iostream>
  2.  
  3. template <std::size_t SideCount, typename T>
  4. class EquilateralPolygon
  5. {
  6. public:
  7.     explicit EquilateralPolygon(T sideLength) : sideLength(sideLength) {}
  8.     std::size_t GetSideCount() const { return SideCount; }
  9.     T GetSideLength() const { return sideLength; }
  10.  
  11.     T calculatePerimeter() const { return SideCount * sideLength; }
  12. private:
  13.     T sideLength;
  14. };
  15.  
  16. template <std::size_t SideCount, typename T>
  17. void displayPerimeter(const EquilateralPolygon<SideCount, T>& p) {
  18.     std::cout << "perimeter length: " << p.calculatePerimeter() << std::endl;
  19. }
  20.  
  21. using EquilateralTriangle = EquilateralPolygon<3, std::size_t>;
  22. using Square = EquilateralPolygon<4, std::size_t>;
  23.  
  24.  
  25. int main() {
  26. 	Square s(5);
  27. 	std::cout << "number of sides a square has: " << s.GetSideCount() << std::endl;
  28.  
  29. 	EquilateralTriangle t(5);
  30. 	std::cout << "number of sides a triangle has: " << t.GetSideCount() << std::endl;
  31.  
  32. 	displayPerimeter(s);
  33. 	displayPerimeter(t);
  34. }
  35.  
Success #stdin #stdout 0s 3460KB
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stdin
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Standard input is empty
stdout
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number of sides a square has: 4
number of sides a triangle has: 3
perimeter length: 20
perimeter length: 15
https://ideone.com/w2UnA4
language:
C++14 (gcc 8.3)
created:
9 years ago
visibility:
public

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