title: Check if integer is multiple of 8
body: <p>Hi i'm new to c++ so i'm not sure if this is a really silly question. Basically i'm using a c++ custom action project to interact with my MSI installer. I get a property that my user will have entered, it is an integer. I need to ensure that this is a multiple of 8 and i'm not sure how to go about this. Obviously if it can be divided by 8 it is a multiple but I am not sure how to capture if there is a remainder. Any help would be appreciated or even point me in the right direction. Thanks</p>