Examples of Union in C [closed]

Answer 1

struct InputEvent
{
    enum EventType
    {
        EventKeyPressed,
        EventKeyPressRepeated,
        EventKeyReleased,
        EventMousePressed,
        EventMouseMoved,
        EventMouseReleased
    } Type;
    union
    {
        unsigned int KeyCode;
        struct
        {
            int x;
            int y;
            unsigned int ButtonCode;
        };
    };
};
...
std::vector   InputQueue;

with the union hack I can simply make a vector of objects. I'm sure this could be made more clean...but it works for me - KISS