Can any pointer using malloc be considered an array?

Question

So, I am learning C right now, and wanted some clarification on some things.

I've learned that if we wanted to create a dynamic arrays we could use the following line of code:

int *arr = malloc(10 * sizeof(int));

I understand that, in this case, arr is a pointer being allocated the equivalent of an array of 10 ints in terms of bytes. I also understand that you can treat arr as an array (from arr[0] to arr[9].

Does that mean all pointers that are allocated memory can be treated as an array?

Like could this be treated as an array?

int *single = malloc(sizeof(int)); 

Or could this be treated as an array?

int *half = malloc(sizeof(int) * 1.5)

Answer 1

• Ignoring the array size, yes all pointers can be used arrays (meaning you can index them).
• The number of elements should be an integer, with truncation for valid access (i.e., 1.5 means 1 item).
• You request number of bytes from malloc, it makes sense that this is a multiple of the item size.
• You should read about pointer arithmetic.
• Array names can also be used as pointers (e.g., *array) but you can't assign to them or modify them (e.g., ++array).