When we write while( head 1=NULL ) ----> tell me in function we pass node* head when head is already null then why it not stop in first time in while loop

#1

void print(node*head){
while(head!=NULL){
here head is already null how it treaverse till end}

#2

head always points to the first node of linked list. head can only be null when linked list is empty.
when we call print, we pass head pointer to this function, which is not null, it actually points to first node of linked list.

thanks

#3

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