how to calculate only decimal

[Chubby]

For example, If I enter like 2.75, I only want to get the .75 * 60. So I would have 2.45.

I do this because I have homework that like this number.

[yulingo]

use modf() http://www.cplusplus.com/reference/cmath/modf

[Chubby]

Thx for reply... but I dont understand completely on how to modf (). From the example, I understand that I have to use cmath in order to use modf ().

[Chubby]

cant use modf on xcode!

[yulingo]

You do realize that this is a C++/C forum, and not an Objective-C forum?