循环队列程序-c语言

Question

程序没有报错，但是不能输入数据，程序直接结束了运行。

//循环队列
#include<stdio.h>
#include<stdlib.h>
#include<malloc.h>
#define MaxSize 10

typedef struct SqQueue
{
    int *base;
    int front;
    int rear;
}*SqQueue;

void InitQueue(SqQueue Q)
{
    Q->base = (int*)malloc(MaxSize*sizeof(int));
    Q->front = Q->rear = 0;
}

int EnQueue(SqQueue Q,int e)
{
    if((Q->rear+1)%MaxSize == Q->front)
    {
       printf("位置已满\n");
       return 0;
    }
    Q->base[Q->rear] = e;
    Q->rear = (Q->rear+1)%MaxSize;
    return 0;
}

int DeleteQueue(SqQueue Q)
{
    int e;
    if(Q->front==Q->rear) return 0;
    e = Q->base[Q->front];
    Q->front = (Q->front+1)%MaxSize;
    return e;
}

void Print(SqQueue Q)
{
    int i;
    while(Q->front % MaxSize != (Q->rear+1) % MaxSize )
    {
        printf("%d\n",Q->base[Q->front]);
        Q->front = (Q->front+1)%MaxSize;
    }
}

int LengthQueue(SqQueue Q)
{
    return Q->rear- Q->front;
}

int main()
{
    SqQueue Q;
    int e,length;
    InitQueue(Q);
    scanf("%d",&e);
    EnQueue(Q,e);
    length = LengthQueue(Q);
    Print(Q);
    e=DeleteQueue(Q);
    printf("e = %d",e);
    return 0;
}

Answer 1

InitQueue里Q的地址更改后带不出函数，因此后面的Q都是没有初始化的。