[Dev-C++] linked list: function to add nodes @ end of list

[chromatonus 7. <chr...@ho...>]

hi, this is part of my code and i have to use struct... but my add_back 
crashes after i input the second new node. (in the else section) i don't 
understand what's wrong.
thanks for helping

struct node
{
   int data;
   node *next;
};

node add_back(node *&list, int info)
{
   node *skip;
   if (list == NULL)
   {
      node *tail = new node;
      tail -> data = info;
      tail -> next = NULL;
      list = tail;
      skip = tail;
   }
   else
   {
      node *tail = new node;
      tail -> data = info;
      tail -> next = NULL;
      skip -> next = tail;
      skip = skip -> next;
   }
}

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