Hi,
I'm trying to understand how example program Ex3_09 calculates the powers of the numbers. I think I understand the for loop statement, but what's doing the actual calculating here? Where's the statement that says to take 2 and raise it to each power? Or is it just magic?

Thank You!

Ruben

From the code, power += power, that's the same as let say 2^2 which is the same as saying 2+2= 4 or 2^2. So its the "power += power" that does it.

Just remember, this is calculating powers of two. I forgot to mention that.

I tried changing the power type to unsigned long and displaying the first 31 powers, but this had the unexpected result that the 31st power was displayed as a negative number (i.e. the variable power was being treated as long).

I found that the only way to get power treated as unsigned long was to declare the iterator i an unsigned long as well.

Why is that?