[Pancake]

Typically, there's two files, the header file and the CPP file.

Example Header

// Camera.h
#ifndef CAMERA_H
#define CAMERA_H

class Camera
{
public:
    void doSometing();
};

#endif

Then make a .cpp file with the same name as the header file:

// Camera.cpp

#include "Camera.h"

void Camera::doSomething()
{
    printf("Doing something...");
}

Now when you get to the robot code, all you need to do is simply include the "Camera.h" file:

//MyRobot.cpp
#include "Camera.h"

class MyRobot : public SimpleRobot
{
    /* Code ommited for simplicity */
    void Autonomous()
    {
        Camera c();
        c.doSomething();
    }
};

START_ROBOT_CLASS(MyRobot);

Hope this example helps...