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  1. #include <bits/stdc++.h>
  2. using namespace std;
  3.  
  4. struct Node {
  5.     int data;
  6.     Node* prev;
  7.     Node* next;
  8. };
  9.  
  10. int main() {
  11.     Node* head = new Node{10, NULL, NULL};
  12.     head->next = new Node{20, head, NULL};
  13.     head->next->next = new Node{30, head->next, NULL};
  14.  
  15.     // Delete first node
  16.     if(head != NULL) {
  17.         Node* temp = head;
  18.         head = head->next;
  19.         if(head != NULL){
  20.             head->prev = NULL;
  21.         delete temp;
  22.         }
  23.     }
  24.  
  25.     // Print using WHILE loop
  26.     Node* t = head;
  27.     while(t != NULL) {
  28.         cout << t->data << " ";
  29.         t = t->next;
  30.     }
  31. return 0;
  32. }
Success #stdin #stdout 0.01s 5320KB
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https://ideone.com/g6Z8io
language:
C++ (gcc 8.3)
created:
2 days ago
visibility:
public

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