c语言问题自动退出？
可以现在c盘中存入名为password.txt的文件文件账号和密码可以设为1 2，和information.txt的文件可以存一个行数据 13207215 cheng male jiangxu 496533 1994 8 29 2017
代码没写完，每次选择用户只能选1 和只能使用查询函数。问题是进入管理员界面四次后就自动退出了。求解答
#include<stdio.h>
#include<graphics.h>
int m=0;
struct Administrator_pass{
char account_number[20];
char password[20];
struct Administrator_pass *next;
};
struct student_pass{
char account_number[15];
char password[15];
struct student_pass *next;
};
struct student{
long int number;
char name[20];
long int class_number;
long int QQ;
char sex[10];
char place_of_origin[15];
int year;
int month;
int day;
int graduate_year;
struct student *next;
};
int main(void)
{
void Administrator_pass(char *account_number,char *password,int n);
void student_pass(char *account_number,char *password,int n);
void Administrator_screen();
void search_information();
void Administrator_choice(int n);
void Main_screen();
void Select_user();
void Choice(int n);
struct Administrator_pass *pass();
struct student *student_information();
struct student_pass *pass1();
Main_screen();
getch();
return 0;
}
void Main_screen()
{
int i,graphdriver,graphmode;
char s[100];
char t[100];
char y[100];
char x[100];
char z[100];
graphdriver=DETECT;
initgraph(&graphdriver,&graphmode,"");
cleardevice();
setbkcolor(BLUE);
setviewport(40,40,600,440,1);
setfillstyle(1,2);
setcolor(YELLOW);
rectangle(0,0,560,400);
floodfill(50,50,14);
rectangle(20,20,540,380);
setfillstyle(1,13);
floodfill(21,300,14);
setcolor(BLACK);
settextstyle(3,0,4);
outtextxy(240,100,"Welcome You");
outtextxy(170,140,"Press any key to continue ");
outtextxy(190,160,"Note the following");
setviewport(100,200,540,380,0);
setcolor(14);
setfillstyle(1,12);
rectangle(20,20,420,120);
settextstyle(3,0,4);
floodfill(21,100,14);
sprintf(s,"1 Please strictly control input format ");
sprintf(t,"2 After the input, please press the return key");
sprintf(y,"3 Please users to maintain the network security ");
sprintf(x,"4 Hope you use the software ");
sprintf(z,"5 Let's begin ");
setcolor(YELLOW);
outtextxy(30,30,s);
outtextxy(30,50,t);
outtextxy(30,70,y);
outtextxy(30,90,x);
outtextxy(30,110,z);
getch();
closegraph();
Select_user();
}
void Select_user()
{
int n,graphdriver,graphmode;
graphdriver=DETECT;
initgraph(&graphdriver,&graphmode,"");
cleardevice();
setbkcolor(RED);
setviewport(40,40,600,440,1);
setfillstyle(1,2);
setcolor(YELLOW);
rectangle(0,0,560,400);
floodfill(50,50,14);
rectangle(20,20,540,380);
setfillstyle(1,13);
floodfill(21,300,14);
setcolor(BLACK);
settextstyle(3,0,4);
outtextxy(180,100,"Welcome You use the software ");
outtextxy(180,180," 1 Administrator");
outtextxy(180,230," 2 Student user");
outtextxy(180,280," 0 Quit");
printf("\n In put you choice:");
scanf("%d",&n);
Choice(n);
}
void Choice(int n)
{
char password[20];
char account_number[20];
int graphdriver,graphmode;
graphdriver=DETECT;
initgraph(&graphdriver,&graphmode,"");
switch(n){
case 1:
m++;
cleardevice();
setbkcolor(6);
setviewport(40,40,100,100,1);
setfillstyle(1,2);
setcolor(YELLOW);
printf("\n\n\n\n\n\n\n");
printf("\t\t\t ");
printf("Welcome you!");
printf("\n\n\n\n\n\n\n");
printf(" ");
printf("Input your account_number:");
scanf("%s",account_number);
printf("\n");
printf(" ");
printf("Input your password:");
scanf("%s",password);
Administrator_pass(account_number,password,n);
break;
case 2:
cleardevice();
setbkcolor(6);
setviewport(40,40,100,100,1);
setfillstyle(1,2);
setcolor(YELLOW);
printf("\n\n\n\n\n\n\n");
printf("\t\t\t ");
printf("Welcome you!");
printf("\n\n\n\n\n\n\n");
printf(" ");
printf("Input your account_number:");
scanf("%s",account_number);
printf("\n");
printf(" ");
printf("Input your password:");
scanf("%s",password);
student_pass(account_number,password,n);
break;
case 0:
cleardevice();
setbkcolor(6);
setviewport(40,40,100,100,1);
setfillstyle(1,2);
setcolor(YELLOW);
printf("\n\n\n\n\n\n\n\n\n\n\n");
printf("\t\t\t ");
printf("Welcome to your next coming!");
return;
default:
cleardevice();
setbkcolor(6);
setviewport(40,40,100,100,1);
setfillstyle(1,2);
setcolor(YELLOW);
printf("Sorry ,please input correct choice!");
printf("\nPress any key to continue");
getch();
Select_user();
break;
}
}
void Administrator_pass(char *account_number,char *password,int n)
{
struct Administrator_pass *head,*p;
int count=0;
int graphdriver,graphmode;
graphdriver=DETECT;
initgraph(&graphdriver,&graphmode,"");
head=pass();
for(p=head;p!=NULL;p=p->next){
if((strcmp(password,p->password)==0)&&(strcmp(p->account_number,account_number)==0)){
count++;
Administrator_screen();
}
}
if(m==3){
cleardevice();
setbkcolor(6);
setviewport(40,40,100,100,1);
setfillstyle(1,2);
setcolor(YELLOW);
printf("Sorry! worry times is too many!\n");
printf("Press any key to quit");
getch();
cleardevice();
setbkcolor(6);
setviewport(40,40,100,100,1);
setfillstyle(1,2);
setcolor(YELLOW);
printf("\n\n\n\n\n\n\n\n\n\n\n");
printf("\t\t\t ");
printf("Welcome to your next coming!");
return;
}
if(count==0){
cleardevice();
setbkcolor(6);
setviewport(40,40,100,100,1);
setfillstyle(1,2);
setcolor(YELLOW);
printf("Sorry! your account_number or password is worry!\n");
printf("Press any key to continue");
getch();
Choice(n);
}
}
struct Administrator_pass *pass()
{
FILE *fp;
struct Administrator_pass *head,*p,*q;
int size=sizeof(struct Administrator_pass);
p=q=head=NULL;
fp=fopen("c:\\password.txt","r");
while(!feof(fp)){
p=(struct Administrator_pass *)malloc(size);
fscanf(fp,"%s%s",p->account_number,p->password);
p->next=NULL;
if(head==NULL)
head=p;
else
q->next=p;
q=p;
}
fclose(fp);
return head;
}
void student_pass(char *account_number,char *password,int n)
{
struct student_pass *head,*p;
int count=0;
int graphdriver,graphmode;
graphdriver=DETECT;
initgraph(&graphdriver,&graphmode,"");
head=pass1();
for(p=head;p!=NULL;p=p->next){
if((strcmp(password,p->password)==0)&&(strcmp(p->account_number,account_number)==0)){
count++;
}
}
if(m==3){
cleardevice();
setbkcolor(6);
setviewport(40,40,100,100,1);
setfillstyle(1,2);
setcolor(YELLOW);
printf("Sorry! worry times is too many!\n");
printf("Press any key to quit");
getch();
cleardevice();
setbkcolor(6);
setviewport(40,40,100,100,1);
setfillstyle(1,2);
setcolor(YELLOW);
printf("\n\n\n\n\n\n\n\n\n\n\n");
printf("\t\t\t ");
printf("Welcome to your next coming!");
return;
}
if(count==0){
cleardevice();
setbkcolor(6);
setviewport(40,40,100,100,1);
setfillstyle(1,2);
setcolor(YELLOW);
printf("Sorry! your account_number or password is worry!\n");
printf("Press any key to continue");
Choice(n);
}
getchar();
}
struct student_pass *pass1()
{
FILE *fp;
struct student_pass *head,*p,*q;
int size=sizeof(struct Administrator_pass);
p=q=head=NULL;
fp=fopen("c:\\pass.txt","r");
while(!feof(fp)){
p=(struct student_pass *)malloc(size);
fscanf(fp,"%s%s",p->account_number,p->password);
p->next=NULL;
if(head==NULL)
head=p;
else
q->next=p;
q=p;
}
fclose(fp);
return head;
}
void Administrator_screen()
{
int n,graphdriver,graphmode;
char s[100];
char t[100];
char y[100];
char x[100];
char z[100];
char a[100];
char b[100];
char c[100];
char d[100];
char e[10];
graphdriver=DETECT;
initgraph(&graphdriver,&graphmode,"");
cleardevice();
setbkcolor(BLUE);
setviewport(40,40,600,440,1);
setfillstyle(1,2);
setcolor(YELLOW);
rectangle(0,0,560,400);
floodfill(50,50,14);
rectangle(20,20,540,380);
setfillstyle(1,13);
floodfill(21,300,14);
setcolor(BLACK);
settextstyle(3,0,4);
outtextxy(240,100,"Welcome You");
setviewport(100,200,540,380,0);
setcolor(14);
setfillstyle(1,12);
rectangle(20,20,420,130);
settextstyle(3,0,4);
floodfill(21,100,14);
sprintf(s,"1 search student's information ");
sprintf(t,"2 change's student's information");
sprintf(y,"3 delect student's information ");
sprintf(x,"4 increase students'information");
sprintf(z,"5 view student's information");
sprintf(a,"6 view the public'information of student");
sprintf(b,"7 delect the public'information of student");
sprintf(c,"8 change student'password");
sprintf(d,"9 change own password");
sprintf(e,"0 Quit");
setcolor(YELLOW);
outtextxy(30,30,s);
outtextxy(30,40,t);
outtextxy(30,50,y);
outtextxy(30,60,x);
outtextxy(30,70,z);
outtextxy(30,80,a);
outtextxy(30,90,b);
outtextxy(30,100,c);
outtextxy(30,110,d);
outtextxy(30,120,e);
getchar();
printf("\n In put you choice:");
scanf("%d",&n);
Administrator_choice(n);
}
void Administrator_choice(int n)
{
switch(n){
case 1:
search_information();
break;
}
}
void search_information()
{
struct student *p,*head;
int b=1,c;
int count=0;
long int student_number;
char s[100];
char t[100];
char y[100];
int i,graphdriver,graphmode;
graphdriver=DETECT;
initgraph(&graphdriver,&graphmode,"");
cleardevice();
setbkcolor(BLUE);
setviewport(40,40,600,440,1);
setfillstyle(1,2);
setcolor(YELLOW);
rectangle(0,0,560,400);
floodfill(50,50,14);
rectangle(20,20,540,380);
setfillstyle(1,13);
floodfill(21,300,14);
setcolor(BLACK);
settextstyle(3,0,4);
outtextxy(240,100,"Welcome You");
setviewport(100,200,540,380,0);
setcolor(14);
setfillstyle(1,12);
rectangle(20,20,420,120);
settextstyle(3,0,4);
floodfill(21,100,14);
sprintf(s,"1 study number");
sprintf(t,"2 student's name");
sprintf(y,"3 class'snumber");
outtextxy(30,30,s);
outtextxy(30,50,t);
outtextxy(30,70,y);
printf("\n In put you choice:");
scanf("%d",&i);
while(b==1){
switch(i){
case 1:
head=student_information();
cleardevice();
setbkcolor(6);
setviewport(40,40,100,100,1);
setfillstyle(1,2);
setcolor(YELLOW);
printf("please input student's number:");
scanf("%ld",&student_number);
for(p=head;p!=NULL;p=p->next){
if(p->number==student_number){
printf("number:%ld\n",p->number);
printf("name:%s\n",p->name);
printf("sex:%s\n",p->sex);
printf("place_of_origin:%s\n",p->place_of_origin);
printf("QQ:%ld\n",p->QQ);
printf("birthday:%d/%d/%d\n",p->year,p->month,p->day);
printf("class_number:%ld\n",p->class_number);
printf("graduate_time:%d\n",p->graduate_year);
count++;
getchar();
printf("Do your want to go on 1 Yes or 2 No:");
scanf("%d",&b);
}
}
if(count==0){
printf("sorry! It is a wrong number!\n");
printf("do you want to go on? 1 Yes or 2 No:");
scanf("%d",&b);
}
if(b==2){
printf("\nDo you want to coninue? 1 Yes or 2 No:");
scanf("%d",&c);
if(c==1){
Administrator_screen();
}
else{
cleardevice();
setbkcolor(6);
setviewport(40,40,100,100,1);
setfillstyle(1,2);
setcolor(YELLOW);
printf("\n\n\n\n\n");
printf("\t\t\t ");
printf("Welcome to your next coming!");
return ;
}
}
count=0;
break;
}
}
}
struct student *student_information()
{
int size1=sizeof(struct student);
FILE *fp1;
struct student *p,*head,*q;
q=head=p=NULL;
if((fp1=fopen("c:\\student.txt","r"))==NULL)
return NULL;
else{
while(!feof(fp1)){
p=(struct student *)malloc(size1);
fscanf(fp1,"%ld%s%s%s%ld%d%d%d%ld%d ",&p->number,p->name,p->sex,p->place_of_origin,&p->QQ,&p->year,&p->month,&p->day,&p->class_number,&p->graduate_year);
p->next=NULL;
if(head==NULL)
head=p;
else
q->next=p;
q=p;
}
}
fclose(fp1);
return head;
}
void Administrator_screen()