链队列的各种基本操作

#include<stdio.h>
#include<malloc.h>
#include<stdlib.h>

#define OK 1
#define ERROR 0

typedef int Status;
typedef char QElemType;

typedef struct QNode {  
//链队列结点的类型定义   
int data;        
struct QNode *next;
}QNode,*QueuePtr;

typedef struct {            
QueuePtr front;       
QueuePtr rear;    
}LinkQueue;

Status InitQueue(LinkQueue &Q) {       
//建一个空队列Q   
Q.front=Q.rear=(QueuePtr)malloc(sizeof(QNode));  
    if (!Q.front)    exit(0);     
Q.front->next=NULL;   
return OK;
} //InitQueue_L

Status EmptyQueue(LinkQueue &Q) {