usb相关数据类型

/* Following USB Device status */
typedef enum
{
    USBD_OK   = 0U,
    USBD_BUSY,
    USBD_FAIL,
} USBD_StatusTypeDef;

int main()
{
    USBD_StatusTypeDef usbdok = USBD_FAIL;
    cout<<usbdok<<endl;
    system("PAUSE");
    return 0;
}