C memset seems to not write to every member

Question

I wrote a small coordinate class to handle both int and float coordinates.

template 
class vector2
{
public:
    vector2() { memset(this, 0, s         


        

Answer 1

The problem is this is a Pointer type, which is 4 bytes (on 32bit systems), and ints are 4 bytes (on 32bit systems). Try:

sizeof(*this)

Edit: Though I agree with others that initializer lists in the constructor are probably the correct solution here.