void getfront(int deque[]){ if(front==-1 && rear==-1 ) printf("Queue is empty\n"); else printf("%d", deque[front]);} void getrear(int deque[]){if(front==-1 && rear ...

firstly output screen display operations with operation number i.e: press 1 to add at start press 2 to add at end press 3 delete from start press 4 to delete at end press 5 check the size of array ...