数据结构作业10

#include <stdio.h>
#include <malloc.h>
 
#define TOTAL_SPACE 5
 
 
typedef struct CircleIntQueue{
	int data[TOTAL_SPACE];
 
	int front;
 
	int rear;
}*CircleIntQueuePtr;
 
 
CircleIntQueuePtr initQueue() {
	CircleIntQueuePtr resultPtr = (CircleIntQueuePtr)malloc(sizeof(struct CircleIntQueue));
	resultPtr->front = 0;
	resultPtr->rear = 0;
 
	return resultPtr;
}
 
 
void enqueue(CircleIntQueuePtr paraPtr, int paraValue) {
	printf("Enqueue: %d ", paraValue);
	if ((paraPtr->rear + 1) % TOTAL_SPACE == paraPtr->front) {
		printf("Queue full.\r\n");
		return;
	} 
 
	paraPtr->data[paraPtr->rear] = paraValue;
	paraPtr->rear = (paraPtr->rear + 1) % TOTAL_SPACE;
}
 
int dequeue(CircleIntQueuePtr paraPtr) {
	int resultValue;
	if (paraPtr->front == paraPtr->rear) {
		printf("No element in the queue.\r\n");
		return -1;
	} 
	resultValue = paraPtr->data[paraPtr->front];
	paraPtr->front = (paraPtr->front + 1) % TOTAL_SPACE;
 
	return resultValue;
}
 
 
void outputCircleIntQueue(CircleIntQueuePtr paraPtr){
	int i;
	if (paraPtr->front == paraPtr->rear) {
		printf("Empty queue.");
		return;
	} 
	printf("Elements in the queue: ");
	for (i = paraPtr->front; i != paraPtr->rear; i = (i + 1) % TOTAL_SPACE) {
		printf("data[%d] = %d, ", i, paraPtr->data[i]);
	} 
 
	printf("\r\n");
}
 
void testCircleIntQueue(){
	int i = 10;
	CircleIntQueuePtr tempPtr = initQueue();
	for (; i < 16; i ++) {
		enqueue(tempPtr, i);
	}
 
	outputCircleIntQueue(tempPtr);
 
	for (i = 0; i < 6; i ++) {
		printf("dequeue gets %d\r\n", dequeue(tempPtr));
    }
 
	for (i = 3; i < 6; i ++) {
		enqueue(tempPtr, i);
	}
	for (i = 20; i < 30; i ++) {
		enqueue(tempPtr, i);
		printf("dequeue gets %d\r\n", dequeue(tempPtr));
		outputCircleIntQueue(tempPtr);
	}
}
 
 
int main(){
	testCircleIntQueue();
	return 1;
}