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  1. #include <iostream>
  2. #include <string> 
  3.  
  4. class Matrix {
  5. 	std::string **m;
  6. 	int m_x, m_y;
  7. public:
  8. 	Matrix(int x, int y) : m_x(x), m_y(y) {
  9. 		m = new std::string*[x];
  10. 		for (int i = 0; i < x; ++i)
  11. 			m[i] = new std::string[y];
  12. 	}
  13.  
  14. 	~Matrix() {
  15. 		for (int i = 0; i < m_x; ++i)
  16. 			delete[] m[i];
  17. 		delete[] m;
  18. 	}
  19.  
  20. 	void print() const {
  21. 		for(int i = 0; i < m_x; ++i) {
  22. 			for (int j = 0; j < m_y; ++j) {
  23. 				std::cout << '[' << m[i][j] << ']';
  24. 			}
  25. 			std::cout << std::endl;
  26. 		}
  27. 	}
  28.  
  29. 	class Proxy {
  30. 		std::string *mm;
  31. 	public:
  32. 		Proxy(std::string *s) : mm(s) {}
  33.  
  34. 		std::string& operator[](int index) {
  35. 			return mm[index];
  36. 		}
  37. 	};
  38.  
  39. 	Proxy operator[](int index) {
  40. 		return Proxy(m[index]);
  41. 	}
  42. };
  43.  
  44. int main()
  45. {
  46. 	Matrix *m = new Matrix(5, 5);
  47. 	m->print();
  48. 	(*m)[2][2] = "It Works";
  49. 	std::cout << (*m)[2][2] << std::endl;
  50. 	m->print();
  51. 	delete m;
  52. 	return 0;
  53. }
Success #stdin #stdout 0s 5652KB
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Standard input is empty
stdout
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[][][][][]
[][][][][]
[][][][][]
[][][][][]
[][][][][]
It Works
[][][][][]
[][][][][]
[][][It Works][][]
[][][][][]
[][][][][]
https://ideone.com/CDGd98
language:
C++ (gcc 8.3)
created:
2 years ago
visibility:
public

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