How to pass a two-dimensional array to a function in C?

Question

My function prototype is

int** rotate(int **arr, int row, int col, int fl);

where arr is the two dimensional array, row<

Answer 1

From the example, I assume that you are using a static definition of arr.

The Pointer to pointer is not the same as a 2D array.

Change

int** rotate(int **arr, int row, int col, int fl);

to

int** rotate(int arr[][20], int row, int col, int fl);

Note that the no of columns will have to be defined before compilation.