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  1. #include <iostream>
  2. using namespace std;
  3.  
  4. void print2DArray_with5Columns(int (*ptr_row)[5])
  5. {
  6. 	for (int i = 0; i < 3; i++)
  7. 	{
  8. 		for (int j = 0; j < 3; j++)
  9. 		{
  10. 			std::cout << ptr_row[i][j] << " ";
  11. 		}
  12. 		std::cout << std::endl;
  13. 	}
  14.  
  15. }
  16.  
  17. void print2DArray_withPtrToPtr(int **ptr_row)
  18. {
  19. 	for (int i = 0; i < 3; i++)
  20. 	{
  21. 		for (int j = 0; j < 3; j++)
  22. 		{
  23. 			std::cout << ptr_row[i][j] << " ";
  24. 		}
  25. 		std::cout << std::endl;
  26. 	}
  27.  
  28. }
  29.  
  30. int main()
  31. {
  32. 	int** ptr_array_5by5;
  33.  
  34. 	ptr_array_5by5 = new int*[3];
  35. 	for (int i = 0; i < 3; i++)
  36. 	{
  37. 		ptr_array_5by5[i] = new int[3];
  38. 		for (int j = 0; j < 3; j++)
  39. 		{
  40. 			ptr_array_5by5[i][j] = i*j;
  41. 		}
  42. 	}
  43.  
  44. 	print2DArray_with5Columns(reinterpret_cast<int (*)[5]>(ptr_array_5by5));
  45.  
  46. 	std::cout << std::endl;
  47.  
  48. 	print2DArray_withPtrToPtr(ptr_array_5by5);
  49.  
  50. 	return 0;
  51. }
Success #stdin #stdout 0s 3428KB
comments (?)
stdin 
Standard input is empty
stdout 
165097496 165097512 165097528 
0 0 17 
2 17 0 

0 0 0 
0 1 2 
0 2 4
https://ideone.com/lVzNrN
language:
C++14 (gcc 8.3)
created:
9 years ago
visibility:
public

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