関連ワード:  queue in data structure in c program    circular queue in data structure in c program    priority queue in data structure in c program    circular queue in data structure in c code    queue data structure in c language    insertion and deletion in queue in data structure in c program    queue operations in data structure using c program    queue in data structure program using array in c    stack and queue in data structure program in c    double ended queue in data structure program in c