memcpy(), what should the value of the size parameter be?

Question

I want to copy an int array to another int array. They use the same define for length so they\'ll always be of the same length.

What are the pros/cons of the followi

Answer 1

How about?

memcpy(dst, src, &src[ARRAY_LENGTH] - &src[0]);

This should work even if the size of individual elements was smaller than the size taken by each item in the actual array.