Making large constants in C source more readable?

Question

I\'m working on some code for a microprocessor.
It has a few large, critical constants.

#define F_CPU 16000000UL

In this case, this is the C

Answer 1

You can use scientific notation:

#define F_CPU 1.6e+007

Or:

#define K 1000

#define F_CPU (1.6*K*K)