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#include <iostream>
using std::cout;
using std::endl;
struct Queue {
Queue *next;
int data;
};
Queue*
queue_new(int data)
{
Queue *q = new Queue;
q->data = data;
q->next = NULL;
return q;
}
void
queue_put(Queue* q, int data)
{
Queue* p = queue_new(data);
Queue* cur = q;
while(cur->next) {
cur = cur->next;
}
cur->next = p;
}
Queue*
queue_pop(Queue* q, int& data)
{
data = q->data;
return q->next;
}
int main(void)
{
Queue *q = queue_new(1);
queue_put(q, 2);
queue_put(q, 3);
cout << q->data << " " << q->next->data << " " << q->next->next->data << endl;
int data;
q = queue_pop(q, data);
cout << data << endl;
q = queue_pop(q, data);
cout << data << endl;
q = queue_pop(q, data);
cout << data << endl;
return 0;
}
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