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

Assuming dst is of type int*, sizeof(dst) will return the size of the pointer itself (i.e. 4 on a 32 bit system, 8 on a 64 bit system), so your second example will only every copy this many bytes, while the first one will correctly use the actual size of the content.