哪位高手能帮小弟我做这个啊如何实现循环啊好像函数写错了，真心要蒙了

谁能帮我做这个啊，怎么实现循环啊，好像函数写错了，真心要蒙了
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <time.h>
#define MAX 20
#define N 1000
#define Print() printf("\t%-9s%-10s%-10s%-10s%-7s%-10s%-10s\n","航 班","日  期","起 始 站","终 点 站","时 间","座位号","票  价"); 
typedef int Status;

typedef struct flightnumber{
char flight[MAX];
char date[MAX];
char start[MAX];
char to[MAX];
char clock[MAX];
int seat;
float charge;
}flightnum;//航班  flightnum flight[N]
flightnum flight[N]=
{
"","","","","",0,0.0,
"K567","01月13日","Hefei","Shanghai","09:30",100,578.0,
"K839","01月13日","Nanjing","Shanghai","14:30",100,378.0,
"D5763","01月13日","Shanghai","Beijing","18:20",100,276.0,
"K237","07月17日","Beijng","Hefei","11:30",100,274.0,
"D5848","11月23日","Beijing","Nanjing","09:45",100,345.0,
"D8939","04月23日","Nanjing","Hefei","10:36",100,123.0
};

typedef struct userinfo{
char name[MAX];
char IDcardnum[MAX];
int ticket;
char flight[MAX];
char date[MAX];
char start[MAX];
char to[MAX];
char clock[MAX];
int seat;
float charge;
}userinfo; //用户结构体   
userinfo user[N]; //userinfo user[N]

Status Homepage();//主要函数
Status Booking();
/*Status Returning();
Status Querying();

Status STquerying();// 各种航班查询 
Status Datequerying();
Status Flightquerying();
Status usernamequerying();
*/
Status searching(int j,char start[],char to[]);
void userinfostorage(int i,int j,char name[],char IDcardnum[]);//对用户而言
int p;//全局变量记录用户个数
int q;
void main()
{
Homepage();

}
Status Homepage()
{
int choice;
printf("%49s\n%48s\n%49s\n","**************************","欢迎来到中国航空售票系统","**************************");
printf("       ********   1:订票(Booking)  ******** \n\n"
   "       ********   2:退票(Returning)  ******** \n\n"
   "       ********   3:查询(Querying)  ******** \n\n"
   "       ********   4:退出(EXIT)  ********\n\n");
printf("请选择: ");
scanf("%d",&choice);
switch(choice)
{
case 1:
Booking();
break;
/*case 2:
Returning();
break;
case 3:
Querying();
break;
*/
default:
printf("你没有进行任何操作!");
break;
}
return 0;
}

Status Booking()//订票
{
char a;
int i=0,j=1;
char name[MAX];
char IDcardnum[MAX];
char start[MAX];
char to[MAX];
printf("请输入姓名及身份证号码 (按Enter键结束输入)\n");
scanf("%s%s",name,IDcardnum);
printf("请输入起点站和终点站 (首字母大写! 例如:Hefei Shanghai) (按Enter键结束输入)\n");
scanf("%s%s",start,to);
searching(j,start,to);// 显示所订票的信息 return j
userinfostorage(++i,j,name,IDcardnum);//存储用户信息// 打印信息
printf("用户 %s 您好,所购机票信息如下: \n",user[i].name);
Print();
printf("\t%-8s%-11s%-10s%-10s%-8s%-9d%-5.2f\n",flight[j].flight,flight[j].date,
flight[j].start,flight[j].to,flight[j].clock,user[i].seat,flight[j].charge);//查看所订票信息*/
printf("是否继续订票? (Y/N) (按Enter键结束输入)\n");