Assume that the following type declaration isavailable: typedef struct node { in

Question

Assume that the following type declaration isavailable:

typedef struct node {

int key; struct node *next;

} NODE, *PNODE;

You are required to write a functionMinPointer with the followingprototype:

PNODE MinPointer (PNODE head);

Here, the parameter headpoints tothe first node of a list each of whose nodes is oftype NODE. Your

function should return a pointer to a node which containsthe minimum key value among thenodes

in thelist. If the given list is empty, your function must return thevalue NULL.

Explanation / Answer

int key; struct node *next;

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