can i run game with both c and java languages ??

i completed small tutorial,it has moving,firing,climbing with c language....i want to add some more action to my game.so i completed "door open and close with key" logic tutorial,but it is in java.i added java script game and its working without problem.in my game there is no calling functions btween c and java.my question is , this is right??..this game work in mobiles??..game working without problem in unity play mode.