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  1. #include<bits/stdc++.h>
  2. using namespace std;
  3. struct Node{
  4.     int data;
  5.     Node* next;
  6. };
  7. Node* head = 0;
  8. void InsertFirst(int item)
  9. {
  10.     Node* nn = new Node();
  11.     (*nn).data = item;
  12.  
  13.     nn->next = head;
  14.  
  15.     head = nn;
  16. }
  17. void InsertLast(int item)
  18. {
  19.     if(head == 0) {
  20.         InsertFirst(item);
  21.         return;
  22.     }
  23.  
  24.     Node* nn = new Node;
  25.     nn->data = item;
  26.     nn->next = 0;
  27.  
  28.     Node* ptr = head;
  29.     while(ptr->next != 0)
  30.     {
  31.         ptr = ptr->next;
  32.     }
  33.  
  34.     ptr->next = nn;
  35. }
  36.  
  37. void Display()
  38. {
  39.     Node* ptr = head;
  40.  
  41.     while(ptr != 0)
  42.     {
  43.         cout << ptr->data << " ";
  44.         ptr = ptr->next;
  45.     }
  46.     cout << endl;
  47. }
  48. int main(){
  49.  
  50. //    InsertFirst(5);
  51. //    Display();
  52. //    InsertFirst(15);
  53. //    InsertFirst(50);
  54. //    InsertFirst(21);
  55.  
  56.     InsertLast(123);
  57.     InsertLast(22);
  58.     InsertLast(3);
  59.  
  60.     Display();
  61.     return 0;
  62. }
  63.  
  64.  
Success #stdin #stdout 0.01s 5288KB
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stdin
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Standard input is empty
stdout
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123 22 3
https://ideone.com/nvtJMt
language:
C++ (gcc 8.3)
created:
4 days ago
visibility:
public

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