Dormitory Management System

#include "stdio.h"
#include "Stdlib.h"
#include "string.h"
#include "conio.h"
#define PAGE 3
#define MAX 1000
#define N 5
int k=0;
/* struct type */
typedef struct
{int num;/* room number */
Char name[20];/* name */
Char sex[5];/* sex */
int age;/* Age */
Char studentclass[20];/* class */
int score;/* Rating */
}students;

int Read_file (STUDENTS stu[])
{FILE *FP;
int i=0;
if ((Fp=fopen ("Stu.txt", "RT")) ==null)
{printf ("\n\n***** inventory file does not exist! Please create ");
return 0;
}
while (feof (FP)!=1)
{
Fread (&stu[i],sizeof (STUDENTS), 1,FP);
if (stu[i].num==0)
Break
Else
i++;
}
Fclose (FP);
return i;
}
void Save_file (STUDENTS stu[],int sum)
{FILE*FP;
int i;
if ((Fp=fopen ("Stu.txt", "WB")) ==null)
{printf ("Write file Error!\n");
Return
}
for (i=0;i<sum;i++)
if (Fwrite (&stu[i],sizeof (STUDENTS), 1,FP)!=1)
printf ("Write file Error!\n");
Fclose (FP);
}

/* Create student information */
int input (STUDENTS stu[])
{int i,x;
for (i=0;i<1000;i++)
{
System ("CLS");
printf ("\ n \ nyou Enter dorm information (up to%d) \ n", MAX);
printf ("----------------------------\ n");

printf ("\ n%d students", k+1);
printf ("\ n Please enter the student's dorm number:");
scanf ("%d", &stu[k].num);
printf ("\ n Please enter the student's name:");
scanf ("%s", stu[k].name);
printf ("\ n Please enter the student's gender:");
scanf ("%s", stu[k].sex);
printf ("\ n Please enter the student's Age:");
scanf ("%d", &stu[k].age);
printf ("\ n Please enter student's class:");
scanf ("%s", Stu[k].studentclass);
printf ("\ n Please enter the student's dorm rating score:");
scanf ("%d", &stu[k++].score);
printf ("\ n Press the 1 key to return to the menu or press 0 to continue creating");
scanf ("%d", &x);
if (x)
break;
}

return k;
}

/* Delete Student information */
void Deletel (STUDENTS stu[])
{System ("CLS");
Char stuname2[20];
int i,j;
printf ("Please enter student's name:");
scanf ("%s", Stuname2);
printf ("\ n");
for (i=0;i<k;i++)
if (strcmp (stu[i].name,stuname2) ==0)
for (j=0;j<20;j++)
STU[I].NAME[J]=STU[I+1].NAME[J];
k--;


printf ("Delete succeeded \ n");
printf ("Press any key and return to the main menu!");
scanf ("%d", &i);
GetChar ();
}

/* Print Student information */
void output (STUDENTS stu[])
{System ("CLS");
int i;
for (i=0;i<k;i++)
printf ("Dorm number:%d, Name:%s, Gender:%s, Age:%d, class:%s, Rating:%d\n", Stu[i].num,stu[i].name,
Stu[i].sex,stu[i].age,stu[i].studentclass,stu[i].score);
printf ("Press any key and return to the main menu!");
scanf ("%d", &i);
GetChar ();
}

/* Query Student information */
void inquire (STUDENTS stu[])
{int i;
int num;
System ("CLS");
printf ("\ n Please enter the dorm number of the student you are looking for");
scanf ("%d", &num);
for (i=0;i<k;i++)
if (num==stu[i].num)
printf ("\n\n\n Dorm number:%d, Name:%s, Gender:%s, Age:%d, class:%s, Rating:%d\n", Stu[i].num,stu[i].name,
Stu[i].sex,stu[i].age,stu[i].studentclass,stu[i].score);
printf ("Press any key and return to the main menu!");
scanf ("%d", &i);
GetChar ();
}

/* Modify Student Information */
void change (STUDENTS stu[])
{int num,i,choice;
System ("CLS");
printf ("\n\n\n Please enter the dorm number of the student you wish to modify");
scanf ("%d", &num);
for (i=0;i<k;i++)
{if (num==stu[i].num)
printf ("\ n Dorm number:%d, Name:%s, Gender:%s, Age:%d, class:%s, Rating:%d\n", Stu[i].num,stu[i].name,
Stu[i].sex,stu[i].age,stu[i].studentclass,stu[i].score);

printf ("\n\n\n ******** Please enter the data you want to modify ********\n\n");
printf ("1. Dormitory no. \ n ");
printf ("2. Name \ n ");
printf ("3. Gender \ n ");
printf ("4. Age \ n ");
printf ("5. Class \ n ");
printf ("6. Rating results \ n \ ");
printf ("Please select (1-6):");
scanf ("%d", &choice);
Switch (choice)
{Case 1:{
printf ("\ n Please enter the new dorm number you changed");
scanf ("%d", &stu[i].num);
Break
}
Case 2:{
printf ("\ n Please enter the new name you Changed");
scanf ("%s", stu[i].name);
Break
}
Case 3:{
printf ("\ n Please enter your new gender");
scanf ("%s", stu[i].sex);
Break
}
Case 4:{
printf ("\ n Please enter the New Age you Changed");
scanf ("%d", &stu[i].age);
Break
}
Case 5:{
printf ("\ n Please enter the new class you Changed");
scanf ("%s", Stu[i].studentclass);
Break
}
Case 6:{
printf ("\ n Please enter your new rating");
scanf ("%d", &stu[i].score);
Break
}
}

printf ("Dorm number:%d, Name:%s, Gender:%s, Age:%d, class:%s, Rating:%d\n", Stu[i].num,stu[i].name,
Stu[i].sex,stu[i].age,stu[i].studentclass,stu[i].score);
printf ("Press any key and return to the main menu!");
scanf ("%d", &i);
Break
}
}

/* Ranking of student achievement information */
void sort (STUDENTS stu[])
{int i,j,n=1,x;
System ("CLS");
int t;
for (i=0;i<k-1;i++)
for (j=i+1;j<k;j++)
if (Stu[i].score<stu[j].score)
{T=stu[i].score;
Stu[i].score=stu[j].score;
stu[j].score=t;
T=stu[i].num;
Stu[i].num=stu[j].num;
stu[j].num=t;

}
for (i=0;i<k;i++)
printf ("Ranked dormitory number \%d%d%d\n", n++,stu[i].num,stu[i].score);
printf ("Press any key and return to the main menu!");
scanf ("%d", &x);
GetChar ();
}

void Pagedis ()
{
printf ("\n\n\n **********************************\n");
printf ("* *\n");
printf ("* *\n");
printf ("* *\n");
printf ("* Welcome to the Dormitory management system *\n");
printf ("* *\n");
printf ("* *\n");
printf ("* *\n");
printf ("**********************************\n");

}
void Check ()
{
Char username[5];/* user name */
Char userpwd[5];/* password */
int i,sum;
System ("Color 4E");
for (i = 1; i < 4; i++)
{
/* User name and password are abcde;*/
printf ("User name and password are abcde\n\n");
printf ("\ n Please enter your user name:");
Gets (UserName);

printf ("\ n Please enter your password:");
Gets (USERPWD);

if ((strcmp (UserName, "ABCDE") ==0) && (strcmp (userpwd, "ABCDE") */* Verify username and password */
{
printf ("User name and password correct, show main Menu");
Return
}
Else
{
if (I < 3)
{
printf ("User name or password error, prompt user to re-enter");
printf ("Username or password is wrong, please re-enter!");
}
Else
{
printf ("3 consecutive incorrect user names or passwords, exit the system.") ");
printf ("You've lost your username or password 3 consecutive times, the system will exit!");
Exit (1);
}
}
}
}
void menu ()
{
STUDENTS STU[20];
int choice,k,sum;
Sum=read_file (Stu);
if (sum==0)
{printf ("First enter basic inventory information! Press ENTER after entering *****\n ");
Getch ();
Sum=input (Stu);
}

Do
{System ("CLS");
printf ("\n\n\n ******** Dormitory Management system ********\n\n");
printf ("1. Create student information \ n ");
printf ("2. Print student information \ n ");
printf ("3. Query student information \ n ");
printf ("4. Modification of student information \ n ");
printf ("5. Delete Student information \ n ");
printf ("6. Student grade information ranking \ n ");
printf ("0. Exit system \ n ");
printf ("Please select (0-6):");
scanf ("%d", &choice);
Switch (choice)
{
Case 1:k=input (STU); break;/* Creating Student Information * *
Case 2:output (STU); break;/* Print Student Information * *
Case 3:inquire (STU); break;/* Query Student Information * *
Case 4:change (STU); break;/* Modify Student Information * *
Case 5:deletel (STU); break;/* Delete Student Information * *
Case 6:sort (STU); break;/* Ranking of student achievement information */
Case 0:break;
}
}while (choice!=0);
Save_file (stu,sum);
}
int main ()
{


int i,sum;
Pagedis ();
Check ();
menu ();

}

Dormitory Management System