Multi-line DEFINE directives?

Question

I am not an expert, so go easy on me. Are there any differences between these two code segments?

#define BIT3 (0x1
<
<
3)
static int a;

Answer 1

The first one should not work. Lines should be separated with backslash THEN newline. Like so:

#define SOME_MACRO "whatever" \
"more" \
"yet more"