Answer Posted / bin fang

the above has bugs! for example, the count is not
decremented in Pop function...

I rewrote the Push and Pop code as follows:

node *cur = NULL;
node *head = NULL;

void Push(int info)
{
node *new;

new = (node *)malloc(sizeof(node));
new->data = info;
new->next = NULL;
if (head == NULL)
head = new;
else
cur->next = new;
cur = new;
count++;
}

void Pop(void)
{
node *pre = NULL;
node *temp = head;

while (temp != cur) {
pre = temp;
temp = temp->next;
}

printf("\n\tNode (%d) is deleted.", cur->data);
free(cur);
count--;

cur = pre;
if (cur)
cur->next = NULL;
else
head = NULL;
}

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