2D Array help pls

Question

The expected output looks something like this:

Enter number of rows: 3
Enter number of columns: 3
Enter element at row 0, column 0: 1
Enter element at row 0, column 1: 2
Enter element at row 0, column 2: 3
Enter element at row 1, column 0: 4
Enter element at row 1, column 1: 5
Enter element at row 1, column 2: 6
Enter element at row 2, column 0: 7
Enter element at row 2, column 1: 8
Enter element at row 2, column 2: 9
9 8 7
6 5 4
3 2 1

Here is my code
https://code.sololearn.com/c7MmfHQnkpbu/?ref=app

Answer 1

Hint:
a possible way is just to save of input values from the back of the array, of course if a swap function is not required.

Another way is to map a 2D array to 1D. The index number of 1D array is f(row, col) a function of row and col.