What is the significance of 0.0f when initializing (in C)?

Question

I\'ve seen code where people initialize float variables like this:

float num = 0.0f;

Is there a significant difference between this and jus

Answer 1

Well, strictly speaking, 0 is an integer, so float num = 0 requires a casting from integer to float. But I suppose the compiler does this for you anyway. I guess people use 0.0f in order to emphasize that this is a float, so nobody mistakes it for an integer.