程序代码：

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

typedef struct duilie 
{
    int a;
    struct duilie *next;
}s,*s1;

 //struct duilie *front,*rear;

struct zhixiang
{
    s1 front;
    s1 rear;
}*q;

int jianli();
int rudui(struct zhixiang *q,int e);
int main()
{
    int a,i,c;

    printf("\n");
    printf("           主菜单                \n");
    printf("     1   建立链表队列            \n");
    printf("     2   入队一个元素            \n");
    printf("     3   出队一个元素            \n");
    printf("     4   结束程序运行            \n");
    printf("请输入你的选择：");
    scanf("%d",&a);
    switch(a)
    {
    case 1:jianli();break;

    case 2:{
             printf("请输入你要入队的元素：");
             scanf("%d",&c);
             rudui(q,c);
           }break;
    }
    return 0;
}

int jianli()
{
    q->front = (s1)malloc(sizeof(s));
    if(q->front==NULL)
        return 0;
    q->rear=q->front;
    q->front->next=NULL;
    //front->a=1;
    //printf("\n%d",front->a);
    return 1;
}
    
int rudui(struct zhixiang *q,int e)
{    
    struct duilie *d;
    d = (s1) malloc (sizeof(s));
    if(d==NULL)
        return 0;
    d->a=e;
    d->next=NULL;

    q->rear->next=d;printf("%d",e);getchar();getchar();
    q->rear=d;
    printf("%d",q->rear->a);
    return 1;
}

q->rear->next=d;