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  1. #include <iostream>
  2. using namespace std;
  3.  
  4. template <class T>
  5. class Unko
  6. {
  7. private:
  8. 	T* pointer;
  9. public:
  10. 	explicit Unko(T* t) {
  11. 		pointer = t;
  12. 		cout << "Eat! (" << pointer << ')' << endl;
  13. 	}
  14. 	~Unko() {
  15. 		delete pointer;
  16. 		cout << "Poo! (" << pointer << ')' << endl;
  17. 	}
  18. 	T& operator * () const { return *pointer; }
  19. 	T* operator -> () const { return pointer; }
  20.  
  21. 	void swap(Unko& unko) {
  22. 		T *tmp;
  23. 		tmp = pointer;
  24. 		pointer = unko.pointer;
  25. 		unko.pointer = tmp;
  26. 	}
  27. 	explicit operator bool () const { return pointer != NULL; }
  28. 	Unko(const Unko& unko) = delete;
  29.     Unko& operator=(const Unko& unko) = delete;
  30. };
  31.  
  32. template <class T>
  33. class Unko<T[]>
  34. {
  35. private:
  36. 	T* pointer;
  37. public:
  38. 	explicit Unko(T* t) {
  39. 		pointer = t;
  40. 		cout << "Eat! (" << pointer << ')' << endl;
  41. 	}
  42. 	~Unko() {
  43. 		delete [] pointer;
  44. 		cout << "Poo! (" << pointer << ')' << endl;
  45. 	}
  46. 	T& operator [] (int n) const { return *(pointer + n); }
  47. 	void swap(Unko& unko) {
  48. 		T *tmp;
  49. 		tmp = pointer;
  50. 		pointer = unko.pointer;
  51. 		unko.pointer = tmp;
  52. 	}
  53. 	explicit operator bool () const { return pointer != NULL; }
  54. 	Unko(const Unko& unko) = delete;
  55.     Unko& operator=(const Unko& unko) = delete;
  56. };
  57.  
  58. class Value
  59. {
  60. private:
  61. 	int value;
  62. public:
  63. 	Value(int v) : value(v) {}
  64. 	~Value() { cout << "Oh! God!" << endl; }
  65. 	int getValue() { return value; }
  66. 	void setValue(int v) { value = v; }
  67. };
  68.  
  69. int main() {
  70. 	cout << "start" << endl;
  71. 	{
  72. 		Unko<int> unko(new int);
  73. 		Unko<int> poop(new int);
  74. 		*unko = 100;
  75. 		*poop = 200;
  76. 		unko.swap(poop);
  77. 		cout << "unko: " << *unko << endl;
  78. 	}
  79. 	{
  80. 		Unko<Value> val(new Value(777));
  81. 		cout << "value: " << val->getValue() << endl;
  82. 		val->setValue(999);
  83. 		cout << "value: " << val->getValue() << endl;
  84. 	}
  85. 	{
  86. 		Unko<int[]> arr(new int[10]);
  87. 		for (int i = 0 ; i < 10; i++) {
  88. 			arr[i] = i * i;
  89. 			cout << "arr[" << i << "] = " << arr[i] << endl;
  90. 		}
  91. 	}
  92. 	cout << "finish" << endl;
  93. 	return 0;
  94. }
Success #stdin #stdout 0s 3476KB
comments (?)
stdin
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Standard input is empty
stdout
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start
Eat! (0x8cc9008)
Eat! (0x8cc9018)
unko: 200
Poo! (0x8cc9008)
Poo! (0x8cc9018)
Eat! (0x8cc9018)
value: 777
value: 999
Oh! God!
Poo! (0x8cc9018)
Eat! (0x8cc9028)
arr[0] = 0
arr[1] = 1
arr[2] = 4
arr[3] = 9
arr[4] = 16
arr[5] = 25
arr[6] = 36
arr[7] = 49
arr[8] = 64
arr[9] = 81
Poo! (0x8cc9028)
finish
https://ideone.com/hUBk8S
language:
C++ (gcc 8.3)
created:
11 years ago
visibility:
public

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