Added doubly linked list program in cpp

Data Structures/DoublyLinkedList.cpp

@@ -0,0 +1,34 @@
+#include<iostream>
+using namespace std;
+
+class Node {
+    int data;
+    Node* prev;
+    Node* next;
+
+    //constructor
+    Node(int d ) {
+        this-> data = d;
+        this->prev = NULL;
+        this->next = NULL;
+    }
+}
+
+//traversing a linked list
+void print(Node* head) {
+    Node* temp  = head ;
+
+    while(temp != NULL) {
+        cout << temp -> data << " ";
+        temp  = temp -> next;
+    }
+    cout << endl;
+}
+
+int main() {
+  Node* node1 = new Node(10);
+  Node* head = node1;
+  print(head);
+
+  return 0;
+}