为什么这个C语言编的通讯录在VC运行出错?

#include "stdio.h"#include "stdlib.h"#include "string.h"struct student{ int no;//学号 char name[20];//姓名 char acdamic[20];//院系 char major[20];//专业 char province[20];//籍贯 char address[40];//住址 long phone;//联系电话 struct student*next;}struct student*input();void print(struct student*h);struct student*insert(struct student*h);struct student*del(struct student*h);void find4(struct student*h);void find3(struct student*h);void find2(struct student*h);void find1(struct student*h);struct student*head=NULL;char ch,*menu[]={"----------通讯录菜单----------", "1--------建立学生通讯录-------", "2--------输出全部学生通讯录----", "3--------增加学生个数----------", "4--------删除指定学号的学生----", "5--------按系别查找学生信息----", "6--------按专业查找学生信息----", "7--------按姓名查找学生信息----", "8-------按学号查找学生信息-----", "9---------退出通讯录-----------"};//菜单 struct student*input()//输入函数 { int n;printf("请输入你要建立的学生同学录的学生个数：\n");scanf("%d",&n);struct student*h=NULL,*p,*q;int i;for(i=1;i<=n;i++) { printf("请依次输入第%d个学生的学号，姓名，系别，专业，籍贯，家庭住址和联系电话：\n",i);p=(struct student*)malloc(sizeof(struct student);if(p==NULL) {printf("内存不足\n");exit(0);} scanf("%d%s%s%s%s%s%ld",&p->no,p->name,p->acdamic,p->maior,p->province,p->address,&p->phone);if(i==1) h=p;else q->next=p;q=p;} q->next=NULL;return h;} void print(struct student*h)//输出函数 { struct student*p=h;while(p) { printf("学生信息：\n%d,%s,%s,%s,%s,%s,%ld\n",p->no,p_>name,p->acdamic,p->major,p->province,p->phone);p=p->next;} } struct student*insert(struct student*h)//增加学生信息 { int n;printf("你要增加的学生的个数：\n");scanf("%d",&n);struct student *P,*r;int i;for(i=1;i<=n;i++) { r=(struct student*)malloc(sizeof(struct student));printf("请输入第%d个你要插入的学生的信息：\n",i);scanf("%d%s%s%s%s%s%ld",&r->no,r->name,r->acdamic,r->major,r->province,r->address,&r->phone);p=h;h=r;r->next=p;} return h;}struct student*del(struct student*h)//按学号进行删除{ int n;printf("请输入你要删除的学生的学号：\n");scanf("%d",&n);struct student*p,*q;if(h=NULL) printf("empty list!\n");else { p=h;while(p->no!=n&&p->next) {q=p;p=p->next;} if(p->no==n) { if(h==p) h=p->next;else q->next=p->next;} else printf("%d is not found!\n");} return h;}void find1(struct student*h)//按院系查找学生{ char s[40];printf("请输入要查找学生的院系：\n");scanf("%s",s);struct student*p;if(h==NULL) printf("empty list!\n");else { p=h;while(p) { if(strcmp(p->acdamic,s)==0) printf("学生信息：\n%d%s%s%s%s%s%ld\n",p->no,p->name,p->acdamic,p->major,p->province,p->address,p->phone);p=p->next;} }}void find2(struct student*h)//按专业查找{ char s[20];printf("请输入要查找的学生的专业名：\n");scanf("%s",s);struct student*p;if(h==NULL) printf("empty list!\n");else { p=h;while(p) { if(strcmp(p->major,s)==0) printf("学生信息：\,%d%s%s%s%s%s%ld\n",p->no,p->name,p->acdamic,p->major,p->province,p->address,p->phone);p=p->next;} }}void find3(struct student *h) /*按姓名查找*/{ char ss[10];printf("请输入要查找的学生的姓名:\n");scanf("%s",ss);struct student *p;if(h==NULL)printf("empty list!\n");else { p=h;while(p) { if(strcmp(p->name,ss)==0) printf("学生信息:\n%d %s %s %s %s %s %ld\n",p->no,p->name,p->acdamic,p->major,p->province,p->address,p->phone);p=p->next;} }}void find4(struct student *h) /*按学号查找*/{ int num;printf("请输入要查找的学生的学号:\n");scanf("%d",&num);struct student *p;if(h==NULL)printf("empty list!\n");else { p=h;while(p) { if(p->no==num) printf("学生信息:\n%d %s %s %s %s %s %ld\n",p->no,p->name,p->acdamic,p->major,p->province,p->address,p->phone);else printf("没有你要查找的学生信息！\n");p=p->next;} }}int menu_select(){ int i,s;char c[3];for(i=0;i<10;i++) printf("%s\n",menu[i]);do { scanf("%s",c);s=atoi(c);}while(s<0||s>9);return s;}main(){ for(;;) { switch(menu_select()) { case 1:head=input();break;case 2:print(head);break;case 3:head=insert(head);break;case 4:head=del(head);break;case 5:find1(head);break;case 6:find2(head);break;case 7:find3(head);break;case 8:find4(head);break;case 9:exit(0);} }} 收起