c语言，学生信息管理系统。看不懂错误提示？？

Question

#include
#include
#include
#include
#include

#define N 100
typedef struct student
{
int num; //学号，姓名，年龄，性别，出生年月，地址，电话，
char name[18];
char sex;
int age;
int y, m;
int tel;
char add[30];
char mail[20];
int res;
int stu;
} SDate;
int PassWord();
void Menu();
int Input_Choice(); //函数声明
void Info_Paixu(SDate *student, int n);
void Info_print(SDate *stu, int n);
int Input_file(SDate *stu1);
int Info_Input(SDate *stu, int count);
void Info_Seach(SDate *stu, int n);
void Info_Change(SDate *stu, int n, int Num);
void Exit();
void Print_file(SDate *stu, int n);
int Info_Del(SDate *stu, int n, int del);
void Info_Change(SDate *stu, int res, int choice);
int Info_Add(SDate *stu, int count);
int main()
{
SDate stu[N];
int ret = 0, res = 0, choice = 0;
char ch;
loop:
ret = PassWord(); //登录函数 默认密码为admin
if (!ret)
{
system("cls");
printf("\n\t\t密码错误或验证码错误!\n"); //默认密码：admin
system("pause");
system("cls");
goto loop;
}
system("cls");
e:
Menu(); //菜单显示函数
printf("你的选择是?\n");
scanf_s("%d", &ret);
switch (ret)
{
case 1:
choice = Input_Choice(); //InputChoice()数据输入方式选择函数
if (choice == 1)
res = Info_Input(stu, res); //键盘输入函数
else if (choice == 2)
res = Input_file(stu); //文件读取函数
else
{
system("cls");
goto e;
}
break;
case 2:
if (res == 0)
{
system("cls");
printf("没有数据输入,请重新选择!\n");
goto e;
}
else
Info_print(stu, res);
break;
case 3:
if (res == 0 || res == 1)
{
system("cls");
printf("没有需要排序数据,请重新选择!\n");
goto e;
}
else
Info_Paixu(stu, res);
break;
case 4:
Info_Seach(stu, res);
break;
case 5:
res = Info_Add(stu, res);
break;
case 6:
Info_print(stu, res);
printf("输入学号进行删除:");
scanf_s("%d", &choice);
res = Info_Del(stu, res, choice);
break;
case 7:
printf("请输入需要修改的学号:");
scanf_s("%d", &choice);
Info_Change(stu, res, choice);
break;
case 8:
Print_file(stu, res);
break;
case 9:
Exit();
break;
default:
printf("您的选泽有误!\n");
}
getchar();
printf("返回主菜单重新选择y/n?");
scanf_s("%c", &ch);
if (ch == 'Y' || ch == 'y')
{
system("cls");
goto e;
}
return 0;
}

int yanzheng() //验证码模块
{
int a, b, c, d;
srand((unsigned)time(NULL));
a = rand() % 100;
b = rand() % 100;
c = a + b;
printf("\n\t **************************\n");
printf("\t\t验证码: %d+%d=?\n", a, b);
printf("\t\t 答案为:");
scanf_s("%d", &d);
if (c == d)
return 1;
else
return 0;
}
int PassWord() //登录模块
{
int i = 0;
char passWord[18];
char p[] = "admin"; //默认密码设置
char ch;
printf("\t 欢迎使用学生信息管理系统\n");
printf("\n");
printf("\t\t用户名:Admin\n");
printf("\n");
printf("\t\t密码:");
while ((ch = _getch()) != 13)
{
putchar('*');
passWord[i] = ch;
i++;
}
passWord[i] = '\0';
if (strcmp(p, passWord) == 0)
yanzheng();
else
return 0;
}

void Menu() //菜单模块
{
printf("\t 欢迎使用学生信息管理系统\n");
printf("\n*******************************************\n");
printf("** \t\t1、学生信息录入\t\t \n");
printf(" \t\t2、学生信息浏览\t\t \n");
printf(" \t\t3、学生信息排序\t\t \n");
printf(" \t\t4、学生信息查找\t\t \n");
printf(" \t\t5、学生信息添加\t\t \n");
printf(" \t\t6、学生信息删除\t\t \n");
printf(" \t\t7、学生信息修改\t\t \n");
printf(" \t\t8、学生信息保存\t\t \n");
printf("\t\t9、退出\t\t\t \n");
printf("*****************************************\n");
}

int Input_Choice() //数据输入方式选择
{
int i;
system("cls");
printf("\t 欢迎使用学生信息管理系统\n");
printf("\t\t1、键盘录入\n");
printf("\t\t2、文件读取\n");
printf("\t\t0、返回\n");
printf("\t你的选择是?");
scanf_s("%d", &i);
return i;
}

int Info_Input(SDate *stu, int count) //信息从键盘输入模块
{
SDate *p;
p = stu;
system("cls");
printf("请输入第%d个学生学号(输入0结束):\n", count + 1);
scanf_s("%d", &p->num);
while (p->num != 0)
{
printf("请输入该学生姓名:\n");
scanf_s("%s", p->name);
printf("请输入该学生年龄:\n");
scanf_s("%d", &p->age);
getchar();
printf("请输入该学生性别:\n");
scanf_s("%c", &p->sex);
printf("请输入该学生出生年月:\n");
scanf_s("%d%d", &p->y, &p->m);
printf("请输入该学生住址:\n");
scanf_s("%s", p->add);
printf("请输入该学生联系电话:\n");
scanf_s("%d", &p->tel);
printf("请输入该学生E-Mail:\n");
scanf_s("%s", p->mail);
count++;
p++;
system("cls");
printf("请输入第%d个学生学号(输入0结束):\n", count);
scanf_s("%d", &p->num);
}
return count;
}

int Input_file(SDate *stu1) //信息从文件输入模块
{
int rin = 0;
SDate *p;
FILE *fp;
p = stu1;

if ((fp = fopen_s("StuInfo.txt","r")) == NULL)
    printf("该文件不存在!\n");
while (!feof(fp))
{
    fscanf(fp, "%d %s %c %d %d %d %d %s %s\n", &p->num, p->name, &p->sex, &p->age, &p->y, &p->m, &p->tel, p->add, p->mail);
    p++;
    rin++;
}
fclose(fp);
printf("文件读取成功!\n");
return rin;

}

void Info_print(SDate *stu, int n) //信息输出至屏幕模块
{
SDate *p;
if (n == 0) //学号，姓名，年龄，性别，出生年月，地址，电话，
printf("没有录入信息!\n");
else
{
printf("\n以下是%d个同学的信息\n", n);
printf("学号 姓名 性别 年龄 出生年月 电话 地址 E-Mail\n");
for (p = stu; p printf("%d %s %c %d %d-%d %d %s %s\n", p->num, p->name, p->sex, p->age, p->y, p->m, p->tel, p->add, p->mail);
}
}

void Print_file(SDate *stu, int n) //信息保存至文件模块
{
FILE *fp;
SDate *p;
p = stu;
if ((fp = fopen("StuInfo.txt", "a")) == NULL)
printf("文件读取失败!\n");
else
{
for (; p fprintf(fp, "%d %s %c %d %d %d %d %s %s\n", p->num, p->name, p->sex, p->age, p->y, p->m, p->tel, p->add, p->mail);
fclose(fp);
printf("\n保存成功!\n");
}
}

void Info_Paixu(SDate *stu, int n) //学号排序模块
{
int i, j;
SDate p;
for (i = 0; i {
for (j = 0; j {
if ((stu[j].num)>(stu[j + 1].num))
{
p = stu[j];
stu[j] = stu[j + 1];
stu[j + 1] = p;
}
}
}
printf("排序完成!\n");
}

void Exit() //退出模块
{
printf("谢谢使用!\n");
exit(1);
}

void Info_Seach(SDate *stu, int n) //查询模块，目前仅支持学号或姓名的精准查询
{
int num, choice;
char name[10];
int flag = -1, i;
system("cls");
printf("请输入查询方式:\t1、学号查询\n\t \t2、名字查询\n");
printf("您的选择是?");
scanf_s("%d", &choice);
if (choice == 1)
{
lab1:
printf("请输入需要查找的学号:\n");
scanf_s("%d", &num);
for (i = 0; i<n; i++)
{
if (num == stu[i].num)
{
flag = i;
printf("%d %s %c %d %d-%d %d %s %s\n", stu[i].num, stu[i].name, stu[i].sex, stu[i].age, stu[i].y, stu[i].m, stu[i].tel, stu[i].add, stu[i].mail);
}
}
if (flag == -1)
{
printf("未找到!请重新选择\n");
printf("1、返回继续查询\n2、退出查询，返回主菜单\n3、退出程序你的选择是？");
scanf_s("%d", &choice);
if (choice == 1)
{
system("cls");
goto lab1;
}
if (choice == 2)
goto end;
else
Exit();
}
}
else if (choice == 2)
{
lab2:
printf("请输入需要查找的姓名:\n");
scanf_s("%s", name);
for (i = 0; i<n; i++)
if (strcmp(name, stu[i].name) == 0)
{
flag = i;
printf("%d %s %c %d %d-%d %d %s %s\n", stu[i].num, stu[i].name, stu[i].sex, stu[i].age, stu[i].y, stu[i].m, stu[i].tel, stu[i].add, stu[i].mail);
}
if (flag == -1)
{
printf("您的输入有误!请重新选择\n");
printf("\t\t1、返回继续查询\n\t\t2、退出查询，返回主菜单\n\t\t3、退出程序\t\t\n你的选择是？");
scanf_s("%d", &choice);
if (choice == 1)
{
system("cls");
goto lab2;
}
if (choice == 2)
goto end;
else
Exit();
}
}
end:
;
}

void Info_Change(SDate *stu, int n, int Num) //信息修改模块
{
int i;
for (i = 0; i<n; i++)
if (stu[i].num == Num)
{
printf("请输入该学生姓名:\n");
scanf_s("%s", stu[i].name);
printf("请输入该学生年龄:\n");
scanf_s("%d", &stu[i].age);
getchar();
printf("请输入该学生性别:\n");
scanf_s("%c", &stu[i].sex);
printf("请输入该学生出生年月:\n");
scanf_s("%d%d", &stu[i].y, &stu[i].m);
printf("请输入该学生住址:\n");
scanf_s("%s", stu[i].add);
printf("请输入该学生联系电话:\n");
scanf_s("%d", &stu[i].tel);
printf("请输入该学生E-Mail:\n");
scanf_s("%s", stu[i].mail);
printf("学号为%d的同学信息修改完成！\n", Num);
}
}

int Info_Del(SDate *stu, int n, int del) //信息删除模块
{
int i, j;
for (i = 0; i<n; i++)
if (stu[i].num == del)
for (j = i; j<n - 1; j++)
stu[j] = stu[j + 1];
n--;
printf("删除成功!\n");
return n;
}

int Info_Add(SDate *stu, int count) //信息添加模块
{
SDate *p;
system("cls");
printf("当前共有%d个数据\n", count + 1);
p = stu + (count);
printf("请输入第%d个学生学号(输入0结束):\n", count + 1);
scanf_s("%d", &p->num);
while (p->num != 0)
{
printf("请输入该学生姓名:\n");
scanf_s("%s", p->name);
printf("请输入该学生年龄:\n");
scanf_s("%d", &p->age);
getchar();
printf("请输入该学生性别:\n");
scanf_s("%c", &p->sex);
printf("请输入该学生出生年月:\n");
scanf_s("%d%d", &p->y, &p->m);
printf("请输入该学生住址:\n");
scanf_s("%s", p->add);
printf("请输入该学生联系电话:\n");
scanf_s("%d", &p->tel);
printf("请输入该学生E-Mail:\n");
scanf_s("%s", p->mail);
count++;
p++;
system("cls");
printf("请输入第%d个学生学号(输入0结束):\n", count + 1);
scanf_s("%d", &p->num);
}
return count;
}

Answer 1

scanf_s("%d", &p->tel);
你这个优先级不对，是先对p取地址了。

别的错误懒得看了，你应该贴出错误提示来。