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  1. #include <iostream>
  2. using namespace std;
  3.  
  4. #define row_size 4
  5.  
  6. void print_matrix(int matrix[][row_size], int col_size)
  7. {
  8. 	for(int i = 0; i < col_size; i++) {
  9. 		for(int j = 0; j < row_size; j++) {
  10. 			cout << matrix[i][j] << " ";
  11. 		}
  12. 		cout << endl;
  13. 	}
  14. }
  15.  
  16. int main() {
  17. 	// your code goes here
  18. 	int data[][row_size] = { {1,2,3,4}, {5,6,7,8}, {9,10,11,12} };
  19. 	int col_size = sizeof(data) / sizeof(data[0]);
  20. 	print_matrix(data, col_size);
  21.  
  22. 	int index_shift = row_size / 2 + row_size % 2;
  23.  
  24. 	for(int i = 0; i < col_size; i++) 
  25. 	{
  26. 		for(int j = 0; j < row_size/2; j++)
  27. 		{
  28. 			int swap = data[i][j];
  29. 			data[i][j] = data[i][ index_shift + j];
  30. 			data[i][index_shift + j] = swap;
  31. 		}
  32. 	}
  33. 	cout << "--------------" << endl;
  34. 	print_matrix(data, col_size);
  35. }
Success #stdin #stdout 0s 15240KB
comments (?)
stdin
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Standard input is empty
stdout
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1 2 3 4 
5 6 7 8 
9 10 11 12 
--------------
3 4 1 2 
7 8 5 6 
11 12 9 10
https://ideone.com/qrs3pP
language:
C++14 (gcc 8.3)
created:
8 years ago
visibility:
public

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