C++ tutorial-count elements of singly linkedlist


Count numbers of items in linked list

 Step 3: Count elements of the linked list

To count all elements of the linked list, we will need a loop to traverse through the linked list. We will let a pointer (i) of ListElem type to point to the pfirst then move the pointer to its next element and increase the number of item(t) one at a time by using a while loop until the end of the linked list(indicated by NULL value) is reached.


//C++ code to count the number of items in the list
int countitem()
{
  ListElem *i;
  int t=0;
  i=pfirst;
  while(i!=NULL){
    t=t+1;
    i=i->next;
   }

 return t;

}


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