when does a array act as a pointer in c?

Question

i know that the array name could be used as a pointer(although it\'s a converted form), but my question is , Is there some other instance where array acts as a pointer.

Answer 1

The identifier itself tells the base address of the memory block.

int arr[SIZE];

 arr
+------+------+----       ----+------+
|      |      |     . . .     |      |
+------+------+----       ----+------+
 arr[0] arr[1]  arr[2]  arr[n-1] arr[n]



The `arr' holds the address of the base address of the block

int *arr = malloc (sizeof (int) * SIZE);

 arr
+------+
|addr1 |------------+
+------+            |
addr_of_arr         |
                    |
                    |
                    V
                  +------+------+----       ----+------+
                  |      |      |     . . .     |      |
                  +------+------+----       ----+------+
                  addr1[0] addr[1]    addr1[n-1] addr1[n]