This C program implements a Doubly Linked List (DLL), a linear data structure in which each node contains three parts — data, a pointer to the previous node, and a pointer to the next node. Unlike a singly linked list, a doubly linked list allows bidirectional traversal, enabling easier insertion and deletion from both ends of the list.

The program provides a menu-driven interface that allows users to:

Insert a node at the beginning of the list

Insert a node at the end of the list

Delete a specific node by its value

Display the list in forward order (from head to tail)

Display the list in reverse order (from tail to head)

It uses dynamic memory allocation (malloc) for creating new nodes and ensures that node connections are properly updated during insertions and deletions. The program continues running until the user chooses to exit.

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