For this ODP, you are to define a struct node, and write a function

named "set" that receives a POINTER to a struct node. The function should

read the data value, double it, and save it back in the node; and then

set the "next" field to NULL.

The struct node has the following setup:

struct node{

int data;

struct node *next;

};

The prototype for set is:

void set(struct node *);