• SHOWING THE SECOND LAST ELEMENT OF A LINKED LISTS

  Language=C

  
  #include<stdio.h>
  #include<stdlib.h>
  
  struct linked_lists
  {
      int data;
      struct linked_lists *next;
  };
  
  typedef struct linked_lists node;
  
  void create( node *list );
  
  void show_before_last( node *list );
  
  int main()
  {
      node *head;
  
      head = ( node* ) malloc( sizeof( node ) );
  
      create( head );
      show_before_last( head );
  
      return 0;
  }
  void create( node *list )
  {
      char c;
  
      scanf( "%d%c",&list->data,&c );
  
      if(c == '\n')
  
          list->next = NULL;
  
      else
      {
          list->next = ( node* ) malloc ( sizeof( node ) );
  
          create( list->next );
      }
      return;
  }
  void show_before_last( node *list )
  {
      while( list->next->next )
  
          list = list->next;
  
      printf( "%d\n",list->data );
  
      return;
  }