Simplicity

How would you define an unsigned int of 32 bits (you can imagine about 64 bits) to be infinite?

some might

const unsigned int kMaxUnsignedInt = 0xFFFFFFFF;

Others (shifting lovers) may

const unsigned int kMaxUnsignedInt =  (((1<<30) - 1) << 2 ) | 3;

Few may

const unsigned int kMaxUnsignedInt = ~0;

I did

const unsigned int kMaxUnsignedInt = -1;

What would you do?

On a side note
What would the following code do?

const unsigned int kMaxUnsigndInt = (1<<31) - 1;