how to use a new node c 2b 2b

1struct node(){
2  int key; 
3  node *next;
4  node(x){  
5    key = x;
6    next = NULL;     
7}}
8// after you take a input of a linked list .
9// creating a new node.
10node *temp = new node(key);  // tem pointer pointing towards the new node. 
11temp -> next = head; // inserting the mew node in the start .
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