Help with implementing Joysticks into C++ command based code

[Ebslgpy]

Hello, I am one of the two programmers in a rookie team starting out this year. We have never programmed for a robot before, but did have experience with C++. We successfully connected commands to joystick buttons, but do not know how to declare the axis of the joysticks in our code (we are using 2 joysticks). Any help in regards of that and how to code the joystick to control the drive train would be appreciated.

P.S. Please do ask if the above paragraph was not clear enough. I hope we can learn more through communicating with experienced programmers.