Objective-C: how to get 123 from 0.123 or generically xyz... from 0.xyz...?

Question

As title states, if I have a float, I need to get the fraction part as an integer, how do I do it?

I was thinking:

1. get index(position) of decimal point
2. then I can know how many digits after decimal point
3. get those digits as substring
4. convert it to an integer

is there any better/smarter way?

update:

I forgot to mention, the float has format like: X.YZ so there are at most two digits after decimal point.

Answer 1

You use the modf function:

double integral;
double fractional = modf(some_double, &integral);

refer this fractional part of NSDecimalnumber