[code=c]
#include <stdio.h>
#include <string.h>
#include <stdlib.h>
struct hangban
{
long int num;       /*定义函数所需*/
char hangbanhao;    /*定义函数所需*/
char qishizhan;     /*定义函数所需*/
char zhongdianzhan; /*定义函数所需*/
int yushoushu;      /*定义函数所需*/
int yishoushu;      /*定义函数所需*/
int feixingshijian; /*定义函数所需*/
};
int n=0;
struct hangban stu[100];
struct hangban *p;

void lr();
void ll();
void cx();
void xg();
void sc();

void main()
{
    int z;
    printf("+---------------------------+\n");
    printf("|  欢迎使用航空订票系统     |\n");
    printf("+---------------------------+\n");
    printf("提示:为保证您的操作得到保存,请按正常顺序退出系统^_^\n");
    do
    {
        printf("\n\t\t\t--------------------------------\n");
        printf("\t\t\t+            主菜单            |\n");
        printf("\t\t\t--------------------------------\n");
        printf("\t\t\t+    [1]----录入               |\n");
        printf("\t\t\t+    [2]----显示               |\n");
        printf("\t\t\t+    [3]----查询               |\n");
        printf("\t\t\t+    [4]----退票               |\n");
        printf("\t\t\t+    [5]----修改               |\n");
        printf("\t\t\t+    [0]----退出               |\n");
        printf("\t\t\t--------------------------------\n");
        printf("请输入您的选择:");
        scanf("%d", &z);
        switch(z)
        {
       case 0 : exit(0); break;   /*退出系统*/
        case 1 :lr();break;
        case 2 :ll();break;
        case 3 :cx();break;
        case 4 :sc();break;
        case 5 :xg();break;
       default:printf("\n无效选项!"); break;
        }
  }
    while(z!= 0);
}

void lr()  /*录入航班信息*/
{
int y=1;
p=stu;
do
{
   printf("--------------------\n");
   printf("请输入飞机航班号:");
   scanf("%ld",&p->hangbanhao);
   printf("请输入飞机起始站:");
   scanf("%s",p->qishizhan   );
   printf("请输入飞机终点站:");
   scanf("%d",&p->zhongdianzhan);
   printf("输入飞机飞行日期:");
   scanf("%s",&p->feixingshijian);
   printf("请输入预售票总数:");
   scanf("%d",&p->yushoushu  );
   printf("请输入已售票总数:");
   scanf("%d",&p->yishoushu  );
   n++;
   p++;
   printf("\n1.继续输入.\n0.输入完毕.\n");
   printf("请选择:");
   scanf("%d",&y);
  }
while(y==1);
printf("提示:输入完毕!你一共输入%d个\n",n);

}

void ll() /*显示航班情况*/
{
  int i,j;
  if(n!=0)
  {
  printf("航班总数:%d\n", n);
  printf("航班号\t起始站\t终点站\t飞行时间\t预售票总数\t已售票总数\t\n");
  printf("-----------------------------------------------------\n");
  for(i=0;i<n;i++)
  printf("%ld\t%s\t%d\t%s\t%d\t%d\t \n",stu[i].hangbanhao,stu[i].qishizhan,stu[i].zhongdianzhan,stu[i].feixingshijian,stu[i].yushoushu,stu[i].yishoushu);
  }
  else printf("提示:无航班数据,请输入数据!");
}

void cx()  /*查询航班情况*/
{
int c;
int w,i,j;
char name[20];
if(n!=0)
{
do{    printf("\n");
        printf("+--------------------+\n");
        printf("| 起飞城市    请按 1 |\n");
        printf("| 抵达城市    请按 2 |\n");
        printf("| 取消        请按 0 |\n");
        printf("+--------------------+\n");
        printf("请输入您的选择:");
        scanf("%d", &c);
        switch(c)
        {
            case 0:  break;
            case 1:
                   j=0;
                   printf("请输入起飞城市:");
                   scanf("%ld", &w);
                   printf("\n");
                   for(i=0;i<n;i++)
                   if(stu[i].num==w)
                   {
                   printf("航班号\t起始站\t终点站\t飞行时间\t预售票总数\t已售票总数\t\n");
                   printf("%ld\t%s\t%d\t%s\t%d\t%d\t\n",stu[i].hangbanhao,stu[i].qishizhan,stu[i].zhongdianzhan,stu[i].feixingshijian,stu[i].yushoushu,stu[i].yishoushu);
                    j=1;
                   }
                   if(j==0)
                   printf("提示:没有该航班记录,请核对!");
                   break;
            case 2:
                   j=0;
                   printf("请输入抵达城市:");
                   scanf("%s", name);
                   printf("\n");
                   for(i=0;i<n;i++)
                   if(strcmp(name,stu[i].hangbanhao)==0)
                   {
                   printf("航班号\t起始站\t终点站\t飞行时间\t预售票总数\t已售票总数\t\n");
                   j=1;
                   printf("%ld\t%s\t%d\t%s\t%d\t%d\t\n",stu[i].hangbanhao,stu[i].qishizhan,stu[i].zhongdianzhan,stu[i].feixingshijian,stu[i].yushoushu,stu[i].yishoushu);
                   }
                  if(j==0)
                  printf("提示:没有该航班记录,请核对!");
                  break;
            default:
                printf("\n提示:无效选项!");
                break;
       }

    }while(c!= 0);
  }else  printf("提示:无航班数据,请输入数据!");
}


void xg()  /*修改航班情况*/
{
long int num;
int i,j,c;
if(n!=0)
{
  printf("请输入您要修改的飞机航班号:");
  scanf("%ld", &num);
  printf("\n");
  for(i=0;i<n;i++)
  if(stu[i].num==num)
  j=i;
  do{
      printf("请选择您要修改的航班的信息内容:\n");
      printf("+----------------------+\n");
      printf("| 航班号        请按 1 |\n");
      printf("| 起始站        请按 2 |\n");
      printf("| 终点站        请按 3 |\n");
      printf("| 飞行时间      请按 4 |\n");
      printf("| 预售票总数    请按 5 |\n");
      printf("| 已售票总数    请按 6 |\n");
      printf("| 取消          请按 0 |\n");
      printf("+----------------------+\n");
      printf("请输入您的选择:");
      scanf("%d", &c);
      printf("\n");
      switch(c)
           {
        case 0:break;

        case 1:printf("请输入航班号:");
               scanf("%s",stu[j].hangbanhao);
               break;
        case 2:printf("请输入起始站:");
               scanf("%d",&stu[j].qishizhan);
               break;
        case 3:printf("请输入终点站:");
               scanf("%s",stu[j].zhongdianzhan);
               break;
        case 4:printf("请输入飞行时间:");
               scanf("%ld",&stu[j].feixingshijian);
               break;
        case 5:printf("请输入预售票总数:");
               scanf("%d",&stu[j].yushoushu);
               break;
        case 6:printf("请输入已售票总数:");
               scanf("%d",&stu[j].yishoushu);
               break;
        default:
                printf("\n无效选项!");
                break;
        }

    }while(c!= 0);
  }else   printf("提示:无航班数据,请输入数据!");
}


void sc()/*退票系统*/
{
long int num;
int i,j,e; 
if(n!=0)
{
printf("航班号\t起始站\t终点站\t飞行时间\t预售票总数\t已售票总数\t\n");
  printf("-----------------------------------------------------\n");
  for(i=0;i<n;i++)
   printf("%ld\t%s\t%d\t%s\t%d\t%d\t\n",stu[i].hangbanhao,stu[i].qishizhan,stu[i].zhongdianzhan,stu[i].feixingshijian,stu[i].yushoushu,stu[i].yishoushu);
  printf("请输入您要退票的航班号:");
  scanf("%ld", &num);
  printf("\n");
  for(i=0;i<n;i++)
  if(num==stu[i].num)
    j=i;
  if(j!=(n-1))
    {
     for(e=i-1;e<n;e++,j++)
     {
      stu[j].num=stu[j+1].num;
      strcpy(stu[j].qishizhan,stu[j+1].qishizhan);
      strcpy(stu[j].zhongdianzhan,stu[j+1].zhongdianzhan);
      stu[j].feixingshijian=stu[j+1].feixingshijian;
      stu[j].yushoushu=stu[j+1].yushoushu;
      stu[j].yishoushu=stu[j+1].yishoushu;
      n--;
     }
    }else n--;
  printf("提示:退票成功!");
  }else    printf("提示:无任何购票记录,请购票!");
}

[/code]


在输入后,显示那里,显示不正常,
在查询选项无法查找航班信息,
我也不知道那里错了,请大家帮忙!!