Discussion
Anyone of the followings can be used to declare a node for a singly linked list. If we use the first declaration, “struct node * nodePtr;” would be used to declare pointer to a node. If we use the second declaration, “NODEPTR nodePtr;” can be used to declare pointer to a node.
/* First declaration */
struct node {
int data;
struct node * nextPtr;
};
/* Second declaration */
typedef struct node{
int data;
NODEPTR nextPtr;
} * NODEPTR;
Answer: B
Correct answer: FALSE
The second declaration is broken: NODEPTR is used inside the structure to declare nextPtr, but the typedef that defines NODEPTR is not complete until the closing brace. A name cannot be used before it exists, so the compiler rejects it. The self-reference has to be written as struct node *nextPtr;.
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