APP_Framework/lib/:add queue lib

APP_Framework/lib/queue/queue.c

@@ -0,0 +1,59 @@
+#include <queue.h>
+Status InitQueue(SqQueue *Q)
+{
+	Q->front=0;
+	Q->rear=0;
+	return  OK;
+}
+
+
+Status ClearQueue(SqQueue *Q)
+{
+	Q->front=Q->rear=0;
+	return OK;
+}
+
+
+Status QueueEmpty(SqQueue *Q)
+{ 
+	if(Q->front==Q->rear) 
+		return TRUE;
+	else
+		return FALSE;
+}
+
+
+int QueueLength(SqQueue *Q)
+{
+	return  (Q->rear-Q->front+MAXSIZE)%MAXSIZE;
+}
+
+
+Status GetHead(SqQueue *Q,QElemType *e)
+{
+	if(Q->front==Q->rear) 
+		return ERROR;
+	*e=Q->data[Q->front];
+	return OK;
+}
+
+
+Status EnQueue(SqQueue *Q,QElemType e)
+{
+	if ((Q->rear+1)%MAXSIZE == Q->front)	
+		return ERROR;
+	Q->data[Q->rear]=e;			
+	Q->rear=(Q->rear+1)%MAXSIZE;								
+	return  OK;
+}
+
+
+Status DeQueue(SqQueue *Q,QElemType *e)
+{
+	if (Q->front == Q->rear)		
+		return ERROR;
+	*e=Q->data[Q->front];			
+	Q->front=(Q->front+1)%MAXSIZE;
+	return  OK;
+}
+