Write C utility to test proximity sensor for RPI

I need a program written in C for the RPI. I am using this device: https://www.amazon.com/gp/product/B01J5KZU8M/ref=oh_aui_search_detailpage?ie=UTF8&psc=1 I want to test it on the RPI. The program needs to have a button to instruct the device to take a reading and then to display the reading on the same screen. I need to be able to press it several times and get several readings without having to restart the program each time. Here is an example of a program that may be adapted to work: [login to view URL] I am not quite sure which pins on the GPIO need to be hooked up, so I would need that info from you.