#include<stdio.h>
#include<stdlib.h>
#include<string.h>
#define size 10
struct t_tickets
{
    int number;
    char begin[10];
    char start[30];
    char loadend[30];
    float time;
    int people;
    int booked;
}t[size];
FILE *fp;
struct t_tickets t[size];
 
void save()
{
    int i;
    if((fp=fopen("ticket.text","w+"))==NULL)
    {printf("cannot open the file\n");
    return;
    }
    for(i=0;i<size;i++)
        if(fwrite(&t[i],sizeof(struct t_tickets),1,fp)!=1)
            printf("file write error\n");
        fclose(fp);
}


void input()
{
    int i;
    printf("----------请录入班次信息-----------\n");
    printf("\n班次 发车时间 起点站 终点站 行车时间 额定载量 已定票数\n ");
    for(i=0;i<size;i++)
    {   printf("班次:\n");
        printf("%d",&t[i].number);
        printf("发车时间\n:");
        printf("%s",&t[i].begin);
        printf(" 起点站 \n:");
        printf("%s",&t[i].start);  
        printf(" 终点站 \n :");
        printf("%s",&t[i].loadend);
        printf("  行车时间\n  :");
        printf("%s",&t[i].time);
        printf(" 额定载量\n   :");
        printf("%d",&t[i].people);
        printf(" 已定票数 \n  :");
        printf("%d",&t[i].booked);
        

        
        save();
    }
}


void output()
{
    int i;
    fp=fopen("ticket.text","r");
    for(i=0;i<size;i++)
    {
        fread(&t[i],sizeof(struct t_tickets),1,fp);
        printf("班次:\n");
        printf("%d",&t[i].number);
        printf("发车时间\n:");
        printf("%s",&t[i].begin);
        printf(" 起点站 \n:");
        printf("%s",&t[i].start);  
        printf(" 终点站 \n :");
        printf("%s",&t[i].loadend);
        printf("  行车时间\n  :");
        printf("%s",&t[i].time);
        printf(" 额定载量\n   :");
        printf("%d",&t[i].people);
        printf(" 已定票数 \n  :");
        printf("%d",&t[i].booked);
        

    }
    fclose(fp);
}


void scan()
{

    int k,number;
    printf("请输入您想要查得班次号\n");
    scan("%d",&number);
    fp=fopen("ticket.text","r");
    for(k=0;k<size;k++)
    {
        fread(&t[k],sizeof(struct t_tickets),1,fp);
        if(number==t[k].number)
        {
        printf("班次:\n");
        printf("%d",&t[k].number);
        printf("发车时间\n:");
        printf("%s",&t[k].begin);
        printf(" 起点站 \n:");
        printf("%s",&t[k].start);  
        printf(" 终点站 \n :");
        printf("%s",&t[k].loadend);
        printf("  行车时间\n  :");
        printf("%s",&t[k].time);
        printf(" 额定载量\n   :");
        printf("%d",&t[k].people);
        printf(" 已定票数 \n  :");
        printf("%d",&t[k].booked);
        

   
            printf("\n%8d %8s %8s %8s %6.2f %8d %8d  \n",&t[k].number,&t[k].begin,&t[k].start,&t[k].loadend,&t[k].time,&t[k].people,&t[k].booked);
    break;
    }
}
if(k>=size)
printf("对不起,没有您想要查询班次,谢谢您使用系统\n");
fclose(fp);
}


void check()
{
int i; char loadend[30];
printf("请输入你想要的终点站名称\n");
scanf("%s",loadend);
fp=fopen("ticket.text","r");
for(i=0;i<size;i++)
{
    fread(&t[i],sizeof(struct t_tickets),1,fp);
    if(strcmp(loadend,t[i].loadend)==0)
    {
        printf("班次:\n");
        printf("%d",&t[i].number);
        printf("发车时间\n:");
        printf("%s",&t[i].begin);
        printf(" 起点站 \n:");
        printf("%s",&t[i].start);  
        printf(" 终点站 \n :");
        printf("%s",&t[i].loadend);
        printf("  行车时间\n  :");
        printf("%s",&t[i].time);
        printf(" 额定载量\n   :");
        printf("%d",&t[i].people);
        printf(" 已定票数 \n  :");
        printf("%d",&t[i].booked);
        

    break;
}
}
if(i>=size)
printf("对不起,没有您想要查询班次,谢谢您使用系统\n");
fclose(fp);
}

void book()
{

    int i,number,m;
    char loadend[30];
    int ticket=1;
if((fp=fopen("ticket.text","w+"))==NULL)
{
    printf("not open the file\n");
    return;
}
for(i=0;i<size;i++)
    fread(&t[i],sizeof(struct t_tickets),1,fp);
printf("请输入您想要到的终点站：\n");
scanf("%s",loadend);
printf("到达终点站得班次有:\n");
for(i=0;i<size;i++)
if(strcmp(loadend,t[i].loadend)==0)
{
    ticket=2;
        printf("班次:\n");
        printf("%d",&t[i].number);
        printf("发车时间\n:");
        printf("%s",&t[i].begin);
        printf(" 起点站 \n:");
        printf("%s",&t[i].start);  
        printf(" 终点站 \n :");
        printf("%s",&t[i].loadend);
        printf("  行车时间\n  :");
        printf("%s",&t[i].time);
        printf(" 额定载量\n   :");
        printf("%d",&t[i].people);
        printf(" 已定票数 \n  :");
        printf("%d",&t[i].booked);
        

}
for(i=0;i<size;i++)
    if(strcmp(loadend,t[i].loadend)==0)
        if(t[i].booked<t[i].people)
        {
            ticket=3;
            printf("请输入定票张数:\n");
            scanf("%d",&m);
            for(i=0;i<=size;i++)
                if(number=t[i].number)
if((fp=fopen("ticket.text","w+"))==NULL)
                {
printf("not open the file\n");
return;
                }
{
    t[i].booked=t[i].booked+m;
if((fp=fopen("ticket.text","w+"))==NULL)
{
printf("not open the file\n");
return;
}
for(i=0;i<size;i++)
fwrite(&t[i],sizeof(struct t_tickets),1,fp);
fclose(fp);
printf("您订票成功！谢谢使用本次服务！\n");
}
        }
        if(ticket==1)
            printf("\n没有你查询的班次 ,请请查询后再输入\n");
if(ticket==2)
printf("\n你想要的票已售完, 请购买下一班\n");
fclose(fp);
if((fp=fopen("ticket.text","w+"))==NULL)
{
    printf("not open the file\n");
    return;
}
for(i=0;i<size;i++)
fwrite(&t[i],sizeof(struct t_tickets),1,fp);
fclose(fp);
}


void rback()

{
    int number,i,m;
if((fp=fopen("ticket.text","w+"))==NULL)
{
printf("not open the file\n");
return;
}
for(i=0;i<=1;i++)
    fread(&t[i],sizeof(struct t_tickets),1,fp);
printf("请输入退票的班次:\n");
scanf("%d",&m);
for(i=0;i<size;i++)
if(number==t[i].number)
{
    t[i].booked=t[i].booked-m;
    printf("退票成功!谢谢\n");
}
fclose(fp);
if((fp=fopen("ticket.text","w+"))==NULL)
{
printf("not open the file\n");
return;
}
for(i=0;i<size;i++)
fwrite(&t[i],sizeof(struct t_tickets),1,fp);
fclose(fp);
}

void over()
{
printf("\n谢谢您的使用，请按任意键结束\n");
exit(0);
}


void main()
{
int b;
printf("\t\t\t这里是车票管理系统,欢迎您的使用\n");
printf("\n********************************************************************************\n");
              printf("\t\t\t===0,录入班次信息===\n");
              printf("\t\t\t===1,浏览车票信息===\n");
              printf("\t\t\t===2,车票班次查询===\n");
              printf("\t\t\t===3,终点站 查询 ===\n");
              printf("\t\t\t===4, 预订车票  ===\n");
              printf("\t\t\t===5, 退订车票  ===\n");
              printf("\t\t\t===6, 退出程序  ===\n");
printf("\n********************************************************************************\n");
 
do{
printf("\t\t\t---选折主菜单功能(0~6)----\n");
scanf("%d",&b);
switch(b)
{
case 0: input();break;
case 1: output;break;
case 2: scan();break;
case 3: check();break;
case 4: book();break;
case 5:rback();break;
case 6:over();break;
defualt:printf("enter error!\n");
}
}
while(1);
}

各位大哥我是个新人,平时上课不认真,这程序搞不懂到底哪出问题拉 ,  能编译但是功能不能实现功能.请个位大哥帮帮忙,小弟感激不尽.

新人还写这么长,惭愧。

发现两个编译错误:
struct t_tickets t[size];   //重复定义
scan("%d",&number);        //这里是scanf吧

1个小问题printf("%d",&t[i].number);在此处不需要“&”吧！！

新人！！

can kui e

这都新手！！我都成牙牙学语了！！！

功能能实现，但是也太烦琐了，我不建议用这么多printf，scanf函数输入输出
#include<stdio.h>
 #include<stdlib.h>
 #include<string.h>
 #define size 10
 struct t_tickets
 {
     int number;
     char begin[10];
     char start[30];
     char loadend[30];
     float time;
     int people;
     int booked;
 }t[size];
 FILE *fp;


 //struct t_tickets t[size];

 void save()
 {
     int i;
     if((fp=fopen("ticket.text","w+"))==NULL)
     {printf("cannot open the file\n");
     return;
     }
     for(i=0;i<size;i++)
         if(fwrite(&t[i],sizeof(struct t_tickets),1,fp)!=1)
             printf("file write error\n");
         fclose(fp);
 }


void input()
 {
     int i;
     printf("----------请录入班次信息-----------\n");
     printf("\n班次 发车时间 起点站 终点站 行车时间 额定载量 已定票数\n ");
     for(i=0;i<size;i++)
     {   printf("班次:\n");
         scanf("%d",&t[i].number);//应该改为scanf函数
         printf("发车时间\n:");
         scanf("%s",&t[i].begin);
         printf(" 起点站 \n:");
         scanf("%s",&t[i].start);  
         printf(" 终点站 \n :");
         scanf("%s",&t[i].loadend);
        printf("  行车时间\n  :");
         scanf("%s",&t[i].time);
        printf(" 额定载量\n   :");
         scanf("%d",&t[i].people);
        printf(" 已定票数 \n  :");
         scanf("%d",&t[i].booked);
        
 
        
         save();
     }
 }
 

void output()
 {
     int i;
     fp=fopen("ticket.text","r");
     for(i=0;i<size;i++)
     {
         fread(&t[i],sizeof(struct t_tickets),1,fp);
        printf("班次:\n");
         printf("%d",t[i].number);
         printf("发车时间\n:");
         printf("%s",t[i].begin);
         printf(" 起点站 \n:");
         printf("%s",t[i].start);  
         printf(" 终点站 \n :");
         printf("%s",t[i].loadend);
        printf("  行车时间\n  :");
         printf("%s",t[i].time);
        printf(" 额定载量\n   :");
         printf("%d",t[i].people);
        printf(" 已定票数 \n  :");
         printf("%d",t[i].booked);
        
        
    }
     fclose(fp);
 }
 

void scan()
 {
 
    int k,number;
     printf("请输入您想要查得班次号\n");
     scanf("%d",&number);
     fp=fopen("ticket.text","r");
     for(k=0;k<size;k++)
     {
         fread(&t[k],sizeof(struct t_tickets),1,fp);
         if(number==t[k].number)
         {
         printf("班次:\n");
         printf("%d",t[k].number);
         printf("发车时间\n:");
         printf("%s",t[k].begin);
         printf(" 起点站 \n:");
         printf("%s",t[k].start);  
         printf(" 终点站 \n :");
         printf("%s",t[k].loadend);
        printf("  行车时间\n  :");
         printf("%s",t[k].time);
        printf(" 额定载量\n   :");
         printf("%d",t[k].people);
        printf(" 已定票数 \n  :");
         printf("%d",t[k].booked);
        
 
   
            printf("\n%8d %8s %8s %8s %6.2f %8d %8d  \n",&t[k].number,&t[k].begin,&t[k].start,&t[k].loadend,&t[k].time,&t[k].people,&t[k].booked);
     break;
     }
 }
 if(k>=size)
 printf("对不起,没有您想要查询班次,谢谢您使用系统\n");
 fclose(fp);
 }
 

void check()
 {
 int i; char loadend[30];
 printf("请输入你想要的终点站名称\n");
 scanf("%s",loadend);
 fp=fopen("ticket.text","r");
 for(i=0;i<size;i++)
 {
     fread(&t[i],sizeof(struct t_tickets),1,fp);
    if(strcmp(loadend,t[i].loadend)==0)
     {
         printf("班次:\n");
         printf("%d",t[i].number);
         printf("发车时间\n:");
         printf("%s",t[i].begin);
         printf(" 起点站 \n:");
         printf("%s",t[i].start);  
         printf(" 终点站 \n :");
         printf("%s",t[i].loadend);
        printf("  行车时间\n  :");
         printf("%s",t[i].time);
        printf(" 额定载量\n   :");
         printf("%d",t[i].people);
        printf(" 已定票数 \n  :");
         printf("%d",t[i].booked);
        
 
    break;
 }
 }
 if(i>=size)
 printf("对不起,没有您想要查询班次,谢谢您使用系统\n");
 fclose(fp);
 }
 
void book()
 {
 
    int i,number,m;
     char loadend[30];
     int ticket=1;
 if((fp=fopen("ticket.text","w+"))==NULL)
 {
     printf("not open the file\n");
     return;
 }
 for(i=0;i<size;i++)
     fread(&t[i],sizeof(struct t_tickets),1,fp);
 printf("请输入您想要到的终点站：\n");
 scanf("%s",loadend);
 printf("到达终点站得班次有:\n");
 for(i=0;i<size;i++)
 if(strcmp(loadend,t[i].loadend)==0)
 {
     ticket=2;
         printf("班次:\n");
         printf("%d",t[i].number);
         printf("发车时间\n:");
         printf("%s",t[i].begin);
         printf(" 起点站 \n:");
         printf("%s",t[i].start);  
         printf(" 终点站 \n :");
         printf("%s",t[i].loadend);
        printf("  行车时间\n  :");
         printf("%s",t[i].time);
        printf(" 额定载量\n   :");
         printf("%d",t[i].people);
        printf(" 已定票数 \n  :");
         printf("%d",t[i].booked);
        
 
}
 for(i=0;i<size;i++)
     if(strcmp(loadend,t[i].loadend)==0)
         if(t[i].booked<t[i].people)
         {
             ticket=3;
             printf("请输入定票张数:\n");
             scanf("%d",&m);
             for(i=0;i<=size;i++)
                 if(number=t[i].number)
 if((fp=fopen("ticket.text","w+"))==NULL)
                 {
 printf("not open the file\n");
 return;
                 }
 {
     t[i].booked=t[i].booked+m;
 if((fp=fopen("ticket.text","w+"))==NULL)
 {
 printf("not open the file\n");
 return;
 }
 for(i=0;i<size;i++)
 fwrite(&t[i],sizeof(struct t_tickets),1,fp);
 fclose(fp);
 printf("您订票成功！谢谢使用本次服务！\n");
 }
         }
         if(ticket==1)
             printf("\n没有你查询的班次 ,请请查询后再输入\n");
 if(ticket==2)
 printf("\n你想要的票已售完, 请购买下一班\n");
 fclose(fp);
 if((fp=fopen("ticket.text","w+"))==NULL)
 {
     printf("not open the file\n");
     return;
 }
 for(i=0;i<size;i++)
 fwrite(&t[i],sizeof(struct t_tickets),1,fp);
 fclose(fp);
 }
 

void rback()
 
{
     int number,i,m;
 if((fp=fopen("ticket.text","w+"))==NULL)
 {
 printf("not open the file\n");
 return;
 }
 for(i=0;i<=1;i++)
     fread(&t[i],sizeof(struct t_tickets),1,fp);
 printf("请输入退票的班次:\n");
 scanf("%d",&m);
 for(i=0;i<size;i++)
 if(number==t[i].number)
 {
     t[i].booked=t[i].booked-m;
     printf("退票成功!谢谢\n");
 }
 fclose(fp);
 if((fp=fopen("ticket.text","w+"))==NULL)
 {
 printf("not open the file\n");
 return;
 }
 for(i=0;i<size;i++)
 fwrite(&t[i],sizeof(struct t_tickets),1,fp);
 fclose(fp);
 }
 
void over()
 {
 printf("\n谢谢您的使用，请按任意键结束\n");
 exit(0);
 }
 

void main()
 {
 int b;
 printf("\t\t\t这里是车票管理系统,欢迎您的使用\n");
 printf("\n********************************************************************************\n");
               printf("\t\t\t===0,录入班次信息===\n");
               printf("\t\t\t===1,浏览车票信息===\n");
               printf("\t\t\t===2,车票班次查询===\n");
               printf("\t\t\t===3,终点站 查询 ===\n");
               printf("\t\t\t===4, 预订车票  ===\n");
               printf("\t\t\t===5, 退订车票  ===\n");
               printf("\t\t\t===6, 退出程序  ===\n");
 printf("\n********************************************************************************\n");

 do{
 printf("\t\t\t---选折主菜单功能(0~6)----\n");
 scanf("%d",&b);
 switch(b)
 {
 case 0: input();break;
 case 1: output();break;
 case 2: scan();break;
 case 3: check();break;
 case 4: book();break;
 case 5:rback();break;
 case 6:over();break;
 defualt:printf("enter error!\n");
 }
 }
 while(1);
 }
 

这是人家编的一个学生选课系统，程序设计都差不多，只是函数实现的时候用的方法不同而已。建议楼主编程也适当考虑下指针
#include<stdio.h>
#include<stdlib.h>
int N1,N2,kk1,kk2,kk3;
struct couse * head1;
struct student * head2;
struct couse//课程信息结构体
{
    int num1;
    char name1[20];
    int score;
    int nelepeo;//课程已选人数
    int Melepeo;//课程人数上限
    struct couse * next;
};
struct student//学生信息结构体
{
    int num2;
    char name2[20];
    int nelenum[50];//已选课程编号
    int nelen;//已选课程数量
    struct student * next;
};
void Ms()
{
    for(kk1=0;kk1<1100;kk1++)
                for(kk2=0;kk2<1200;kk2++)
                    for(kk3=0;kk3<1200;kk3++)
;
}
void keyboardc()//录入课程子函数(从键盘录入)
{
struct couse *p1,*p2;
N1=0;
p1=p2=(struct couse*)malloc(sizeof(struct couse));
printf("课程编号\t课程名称\t学分\t课程人数上限\n");
scanf("%d%s%d%d",&p1->num1,p1->name1,&p1->score,&p1->Melepeo);
p1->nelepeo=0;
head1=NULL;
while(p1->num1!=0)
{
    N1=N1+1;
    if(N1==1)head1=p1;
    else p2->next=p1;
    p2=p1;
    p1=(struct couse * )malloc(sizeof(struct couse));
    scanf("%d%s%d%d",&p1->num1,p1->name1,&p1->score,&p1->Melepeo);
    p1->nelepeo=0;
}
p2->next=NULL;
}
void filec()//录入键盘子函数(从文件录入)
{
    FILE * fp;
    char filepath[20];
    struct couse *p1,*p2;
    N1=0;
    printf("输入要读入的文件路径:");
    getchar();
    gets(filepath);
    if((fp=fopen(filepath,"r"))==NULL)
    {
        printf("找不到%s文件!\n",filepath);
        exit(0);
    }
    p1=p2=(struct couse*)malloc(sizeof(struct couse));
    fscanf(fp,"%d%s%d%d%d",&p1->num1,p1->name1,&p1->score,&p1->nelepeo,&p1->Melepeo);
    head1=NULL;
    while(!feof(fp))
    {
        N1=N1+1;
        if(N1==1)head1=p1;
        else p2->next=p1;
        p2=p1;
        p1=(struct couse * )malloc(sizeof(struct couse));
        fscanf(fp,"%d%s%d%d%d",&p1->num1,p1->name1,&p1->score,&p1->nelepeo,&p1->Melepeo);
    }
    p2->next=NULL;
}
void inputc()//录入课程主函数
{
    int i;
    printf("\t\t\t录入课程信息\n");
    printf("\n1.从键盘录入\n");
    printf("2.从文件录入\n");
    printf("3.返回主菜单\n");
    printf("请选择(1~3):\n");
    scanf("%d",&i);
    switch(i)
    {
    case(1):keyboardc();break;
    case(2):filec();break;
    case(3):break;
    }
}
void insertc(struct couse *incouse)//课程管理子函数(增加课程)
{
    struct couse *p0,*p1,*p2;
    p1=head1;
    p0=incouse;
    if(head1==NULL)
    {
        head1=p0;
        p0->next=NULL;
    }
    else
    {
        while((p0->num1 > p1->num1) && (p1->next!=NULL))
        {
            p2=p1;
            p1=p1->next;
        }
        if(p0->num1 <= p1->num1)
        {
            if(head1==p1) head1=p0;
            else p2->next=p0;
            p0->next=p1;
        }
        else
        {
            p1->next=p0;
            p0->next=NULL;
        }
    }
    N1=N1+1;
}
void delc(int num1)//课程管理子函数(删除课程)
{
    struct couse *p1,*p2;
    if(head1==NULL)
    {
        printf("\n没有课程,无法删除!\n");
        goto end;
    }
    p1=head1;
    while(num1!=p1->num1 && p1->next!=NULL)
    {
        p2=p1;
        p1=p1->next;
    }
    if(num1==p1->num1)
    {
        if(p1==head1) head1=p1->next;
        else p2->next=p1->next;
        printf("已删除该编号课程!\n");
        N1=N1-1;
    }
    else printf("无该编号的课程!\n");
    end:;
}
void managementc()//课程管理主函数
{
    struct couse * incouse;
    int i,num1;
    printf("\t\t\t课程管理\n");
    printf("1.新增课程\n");
    printf("2.删除课程\n");
    printf("3.返回主菜单\n");
    printf("请选择(1~3):\n");
    scanf("%d",&i);
    switch(i)
    {
    case(1):
        {
            incouse=(struct couse *)malloc(sizeof(struct couse));
            printf("课程编号\t课程名称\t学分\t课程人数上限\n");
            scanf("%d%s%d%d",&incouse->num1,incouse->name1,&incouse->score,&incouse->Melepeo);
            incouse->nelepeo=0;
            insertc(incouse);
            break;
        }
    case(2):
        {
            printf("请输入要删除课程的编号:\n");
            scanf("%d",&num1);
            delc(num1);
            break;
        }
    case(3):break;
    }
}
void keyboards()//录入学生信息子函数（从键盘录入）
{
    int i;
    struct student *p1,*p2;
    N2=0;
    p1=p2=(struct student *)malloc(sizeof(struct student));
    printf("学生学号\t学生姓名\n");
    scanf("%d%s",&p1->num2,p1->name2);
    p1->nelen=0;
    for(i=0;i<20;i++) p1->nelenum[i]=0;
    head2=NULL;
    while(p1->num2!=0)
    {
        N2=N2+1;
        if(N2==1)head2=p1;
        else p2->next=p1;
        p2=p1;
        p1=(struct student * )malloc(sizeof(struct student));
        scanf("%d%s",&p1->num2,p1->name2);
        p1->nelen=0;
        for(i=0;i<20;i++) p1->nelenum[i]=0;
    }
    p2->next=NULL;
}
void files()//录入学生信息子函数（从文件录入）
{
    int i=0;
    FILE * fp;
    char filepath[20];
    struct student *p1,*p2;
    N2=0;
    printf("输入要读入的文件路径:");
    getchar();
    gets(filepath);
    if((fp=fopen(filepath,"r"))==NULL)
    {
        printf("找不到%s文件!\n",filepath);
        exit(0);
    }
    p1=p2=(struct student*)malloc(sizeof(struct student));
    fread(p1,sizeof(struct student),1,fp);
    head2=NULL;
    while(!feof(fp))
    {
        i=0;
        N2=N2+1;
        if(N2==1)head2=p1;
        else p2->next=p1;
        p2=p1;
        p1=(struct student * )malloc(sizeof(struct student));
        fread(p1,sizeof(struct student),1,fp);
    }
    p2->next=NULL;
}
void inputs()//录入学生信息主函数
{
    int i;
    printf("\t\t\t录入学生信息\n");
    printf("\n1.从键盘录入\n");
    printf("2.从文件录入\n");
    printf("3.返回主菜单\n");
    printf("请选择(1~3):\n");
    scanf("%d",&i);
    switch(i)
    {
    case(1):keyboards();break;
    case(2):files();break;
    case(3):break;
    }
}
void inserts(struct student * incouse)//学生信息管理子函数(填加学生信息)
{
    struct student *p0,*p1,*p2;
    p1=head2;
    p0=incouse;
    if(head2==NULL)
    {
        head2=p0;
        p0->next=NULL;
    }
    else
    {
        while((p0->num2 > p1->num2) && (p1->next!=NULL))
        {
            p2=p1;
            p1=p1->next;
        }
        if(p0->num2 <= p1->num2)
        {
            if(head2==p1) head2=p0;
            else p2->next=p0;
            p0->next=p1;
        }
        else
        {
            p1->next=p0;
            p0->next=NULL;
        }
    }
    N2=N2+1;
}
void dels(int num2)//学生信息管理子函数（删除学生信息)
{
    struct student *p1,*p2;
    if(head2==NULL)
    {
        printf("\n没有该学生信息,无法删除!\n");
        goto end;
    }
    p1=head2;
    while(num2!=p1->num2 && p1->next!=NULL)
    {
        p2=p1;
        p1=p1->next;
    }
    if(num2==p1->num2)
    {
        if(p1==head2) head2=p1->next;
        else p2->next=p1->next;
        printf("已删除该学生信息!\n");
        N2=N2-1;
    }
    else printf("无该学号的学生!\n");
    end:;
}
void managements()//学生信息管理主函数
{
    struct student * incouse;
    int i,num2;
    printf("\t\t\t学生信息管理\n");
    printf("1.新增学生信息\n");
    printf("2.删除学生信息\n");
    printf("3.返回主菜单\n");
    printf("请选择(1~3):\n");
    scanf("%d",&i);
    switch(i)
    {
    case(1):
        {
            incouse=(struct student *)malloc(sizeof(struct student));
            incouse->nelen=0;
            incouse->nelenum[0]=0;
            printf("学生学号\t学生姓名\n");
            scanf("%d%s",&incouse->num2,incouse->name2);
            inserts(incouse);
            break;
        }
    case(2):
        {
            printf("请输入要删除学生的学号:\n");
            scanf("%d",&num2);
            dels(num2);
            break;
        }
    case(3):break;
    }
}
void elect(struct student * s)//选课
{
    struct couse * p;
    int num1,i;
    printf("请输入要选课的编号:\n");
    scanf("%d",&num1);
    for(i=0;s->nelenum[i]!=0;i++);
    s->nelenum[i]=num1;
    (s->nelen)++;
    p=head1;
    while(p->num1!=num1) p=p->next;
    (p->nelepeo)++;
}
void cheak()//学生选课子函数(查询可选课程)
{
    char e;
    struct couse * c;
    struct student * s;
    int num2,i,j=0,t=0;
    printf("请输入你的学号:");
    scanf("%d",&num2);
    s=head2;
    while(s->num2!=num2 && s->next!=NULL) s=s->next;
    if(s->num2!=num2)
    {
        printf("不存在你的信息,请进入主菜单录入你的信息!\n");
        goto end;
    }
    c=head1;
    printf("你的可选课程编号:\n");
    while(c!=NULL)
    {
        for(t=0,i=0;s->nelenum[i]!=0;i++)
        {
            if(c->num1==s->nelenum[i]) t=1;
        }
        if(t==0 && (c->nelepeo!=c->Melepeo))
        {
            printf("%d\n",c->num1);
            j++;
        }
        c=c->next;
    }
    if(j==0)
    {
        printf("你已选完所有课程，无法再多选!\n");
        goto end;
    }
    printf("选课(y/n)?:\n");
    getchar();
    e=getchar();
    i=0;
    while(e=='y')
    {
        elect(s);
        printf("继续选课(y/n)?:\n");
        getchar();
        e=getchar();
    }
    end:;
}
void back(struct student * p)//退课
{
    struct couse * p1;
    int num1,i,j;
    printf("请输入你要退掉的课程编号:\n");
    scanf("%d",&num1);
    p1=head1;
    while(p1->num1!=num1) p1=p1->next;
    for(i=0;p->nelenum[i]!=num1;i++);
    for(j=i;p->nelenum[j]!=0;j++) p->nelenum[j]=p->nelenum[j+1];
    p->nelenum[--j]=0;
    (p1->nelepeo)--;
    printf("退课成功!\n");
}
void hcheak()//学生选课子函数（查询已选课程)
{
    char c;
    struct couse * p0;
    struct student * p;
    int num2,i,f=0;
    printf("请输入学号:\n");
    scanf("%d",&num2);
    p=head2;
    while(p->num2!=num2 && p!=NULL) p=p->next;
    if(p==NULL)
    {
        printf("不存在你的信息,请回主菜单录入信息:\n");
        goto end;
    }
    printf("已选课程编号:\n");
    if(p->nelenum[0]==0)
    {
        printf("你还没选课!\n");
        goto end;
    }
    for(i=0;p->nelenum[i]!=0;i++)
    {
        printf("%d\n",p->nelenum[i]);
        p0=head1;
        while(p0->num1!=p->nelenum[i]) p0=p0->next;
        f=f+p0->score;
    }
    printf("总学分:%d\n",f);
    printf("是否进行退课(y/n)?");
    getchar();
    c=getchar();
    while(c=='y')
    {
        back(p);
        printf("继续退课(y/n)?");
        getchar();
        c=getchar();
        (p->nelen)--;
    }
    end:;
}
void elective()//学生选课主函数
{
    int i;
    printf("\t\t\t学生选课\n");
    printf("1.查询可选课程\n");
    printf("2.查询已选课程\n");
    printf("3.返回主菜单\n");
    printf("请输入(1~3):\n");
    scanf("%d",&i);
    switch(i)
    {
    case(1):cheak();break;
    case(2):hcheak();break;
    case(3):break;
    }
}
void listc()//输出课程信息
{
    struct couse * p;
    p=head1;
    printf("课程编号  课程名称  学分  课程已选人数  课程人数上限\n");
    while(p!=NULL)
    {
        printf("%-8d%10s%6d%8d%12d\n",p->num1,p->name1,p->score,p->nelepeo,p->Melepeo);
        p=p->next;
    }
}
void lists()//输出学生信息
{
    struct student * p;
    p=head2;
    printf("学生学号  学生姓名  已选课程数量\n");
    while(p!=NULL)
    {
        printf("%-4d %10s %6d\n",p->num2,p->name2,p->nelen);
        p=p->next;
    }
}
void intoc()//存储课程信息
{
    FILE * fp;
    struct couse * p;
    char filepath[30];
    printf("输入课程信息要保存的文件路径:");
    getchar();   
    gets(filepath);
    if((fp=fopen(filepath,"w"))==NULL)
    {
        printf("\n保存失败!");
        exit(0);
    }
    p=head1;
    while(p!=NULL)
    {
        fprintf(fp,"%d %s %d %d %d\n",p->num1,p->name1,p->score,p->nelepeo,p->Melepeo);
        p=p->next;
    }
    fclose(fp);
    printf("课程信息已保存在%s中!\n",filepath);
}
void intos()//存储学生信息
{
    FILE * fp;
    struct student * p;
    char filepath[30];
    printf("输入学生信息要保存的文件路径:");
    getchar();   
    gets(filepath);
    if((fp=fopen(filepath,"w"))==NULL)
    {
        printf("\n保存失败!");
        exit(0);
    }
    p=head2;
    while(p!=NULL)
    {
        fwrite(p,sizeof(struct student),1,fp);
        p=p->next;
    }
    fclose(fp);
    printf("学生信息已保存在%s中!\n",filepath);
}
void into()//存储信息
{
    int i;
    printf("1.存储课程信息\n");
    printf("2.存储学生信息\n");
    printf("3.返回主菜单\n");
    printf("请输入(1~3)\n");
    scanf("%d",&i);
    switch(i)
    {
    case(1):intoc();break;
    case(2):intos();break;
    case(3):break;
    }   
}
void store()//信息主函数
{
    int i;
    printf("\t\t系统信息查看及存储\n");
    printf("1.查看课程信息\n");
    printf("2.查看学生信息\n");
    printf("3.存储信息\n");
    printf("4.返回主菜单\n");
    printf("请输入(1~4):\n");
    scanf("%d",&i);
    switch(i)
    {
    case(1):listc();break;
    case(2):lists();break;
    case(3):into();break;
    case(4):break;
    }
}
int main()//主函数
{
    int i;
    start:
    printf("\n\t\t\t欢迎使用学生选课系统!\n");
    printf("菜单:\n");
    printf("1.录入课程信息\n");
    printf("2.课程管理\n");
    printf("3.录入学生信息\n");
    printf("4.学生信息管理\n");
    printf("5.学生选课\n");
    printf("6.系统信息查看及存储\n");
    printf("7.退出系统\n");
    printf("\n请输入菜单选项(1~7):\n");
    scanf("%d",&i);
    if(i<1 || i>7)
    {
        printf("输入错误,请重输:\n");
        goto start;
    }
    switch(i)
    {
    case(1):
        {
            system("cls");
            inputc();
            goto start;
            break;
        }
    case(2):
        {
            system("cls");
            managementc();
            goto start;
            break;
        }
    case(3):
        {
            system("cls");
            inputs();
            goto start;
            break;
        }
    case(4):
        {
            system("cls");
            managements();
            goto start;
            break;
        }
    case(5):
        {
            system("cls");
            elective();
            goto start;
            break;
        }
    case(6):
        {
            system("cls");
            store();
            goto start;
            break;
        }
    case(7):
        {
            system("cls");
            printf("感谢使用本系统!\n\n再见!\n");
        }
    }
    return(0);
}

这位大哥，谢谢啦，程序还是有点问题，输入的班号和额定载客还有已定票人数，在查询时会和输入的不同。而且很大，求解。