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Database

This document contains code for a C program that implements a student management system. It allows users to perform CRUD (create, read, update, delete) operations on a database of student records stored in a binary file. The main function displays a menu and calls functions to handle each operation. Structs are used to define student records and functions are created to add, display, update, delete and search student information from the binary file.

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Rajay Gordon
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56 views8 pages

Database

This document contains code for a C program that implements a student management system. It allows users to perform CRUD (create, read, update, delete) operations on a database of student records stored in a binary file. The main function displays a menu and calls functions to handle each operation. Structs are used to define student records and functions are created to add, display, update, delete and search student information from the binary file.

Uploaded by

Rajay Gordon
Copyright
© © All Rights Reserved
We take content rights seriously. If you suspect this is your content, claim it here.
Available Formats
Download as TXT, PDF, TXT or read online on Scribd
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#include <stdio.

h>
#include <string.h>
#include <conio.h>
#include <windows.h>
/*
The code is a student management system written in the C programming language.
This program allows users to create, display, update, delete, and search for
student records.
It uses a struct to represent a student, and a binary file to store the student
records.
The program consists of a main function that displays a menu and calls the
appropriate functions depending on the user's input.
*/

// the student typedef struct is created in order to input student data.


// typedef also allows us to use "Student" as a replacement for struct.
typedef struct Student
{
char studentName[50];
char studentId[15];
char studentGrade[10];
char fathersName[100];
char mothersName[100];
char studentContactNum[15];
float schoolFeeAmt;
} Student;

// functions created to add, display, update, delete and search for students.
void createAccount();
void displayInfo();
void updateInfo();
void deleteInfo();
void searchInfo();

int main()
{
// option used in the switch case and while loop operations to create the menu
of the program
char option;

while (option != '0')


{
system("cls");
printf("\t\t====== Student Management Database System ======\n");
printf("\n\t\t\t1. Create Student Account");
printf("\n\t\t\t2. Display All Students Information");
printf("\n\t\t\t3. Update Student Information");
printf("\n\t\t\t4. Delete Student Information");
printf("\n\t\t\t5. Search Student Information");
printf("\n\t\t\t0. Exit");

printf("\n\n\n\t\t\tEnter Your Option: ");


scanf(" %c", &option);

switch (option)
{
case '1':
createAccount();
break;
case '2':
displayInfo();
break;
case '3':
updateInfo();
break;
case '4':
deleteInfo();
break;
case '5':
searchInfo();
break;
case '0':
printf("\n\t\t\t====== Thank You ======");
break;
default:
printf("\n\t\t\tInvalid Option, Please Enter Right Option !\n");
}
}
return 0;
}

void createAccount()
{
FILE *fileOne = fopen("studentInfo.txt", "ab+");

if (fileOne == NULL)
{
printf("\n\t\t\tError !\n");
}

Student stundentInformation;

system("cls");

printf("\t\t\t====== Create Student Account ======\n");

printf("\n\t\t\tEnter Student's Name : ");


getchar();
gets(stundentInformation.studentName);
printf("\t\t\tEnter Student's ID : ");
gets(stundentInformation.studentId);
printf("\t\t\tEnter Student's Grade : ");
gets(stundentInformation.studentGrade);
printf("\t\t\tEnter student's Mother's name : ");
gets(stundentInformation.mothersName);
printf("\t\t\tEnter student's Father's name : ");
gets(stundentInformation.fathersName);
printf("\t\t\tEnter Student's Contact Number : ");
gets(stundentInformation.studentContactNum);
printf("\t\t\tEnter School fee amount ($4000 extra is your a transfer
student) : ");
scanf("%f", &stundentInformation.schoolFeeAmt);

fwrite(&stundentInformation, sizeof(stundentInformation), 1, fileOne);

printf("\n\n\t\t\tInformations have been stored sucessfully\n");


printf("\n\n\t\t\tEnter any keys to continue.......");
getch();
fclose(fileOne);
}

void displayInfo()
{
FILE *fileOne = fopen("studentInfo.txt", "rb");

if (fileOne == NULL)
{
printf("\n\t\t\tError !\n");
}

Student stundentInformation;

system("cls");

printf("\t\t\t\t====== All Students Information ======\n");

printf("\n\n\t\t%-20s%-13s%-10s%-25s%-15s%-18s%-s\n", "Name", "ID", "Grade",


"Mother's name", "Father's name", "Contact", "School Fee");
printf("\t\
t----------------------------------------------------------------------------------
------");

while (fread(&stundentInformation, sizeof(stundentInformation), 1, fileOne) ==


1)
{
printf("\n\n\t\t%-20s%-13s%-10s%-25s%-15s%-18s%-.2f",
stundentInformation.studentName, stundentInformation.studentId,
stundentInformation.studentGrade, stundentInformation.mothersName,
stundentInformation.fathersName ,stundentInformation.studentContactNum,
stundentInformation.schoolFeeAmt);
}

printf("\n\n\t\tEnter any keys to continue.......");


getch();

fclose(fileOne);
}

void updateInfo()
{
FILE *fileOne = fopen("studentInfo.txt", "rb");
FILE *temp = fopen("temp.txt", "wb");

Student studentInformation, tempInformation;

int choice, flag = 0;

if (fileOne == NULL || temp == NULL)


{
printf("\n\t\t\tError !\n");
}

system("cls");

printf("\t\t\t\t====== Update Students Information ======\n");


printf("\n\t\t\tEnter Student's ID : ");
getchar();
gets(tempInformation.studentId);

while (fread(&studentInformation, sizeof(studentInformation), 1, fileOne) == 1)


{
if (strcmp(studentInformation.studentId, tempInformation.studentId) == 0)
{
flag++;
printf("\n\t\t\tChoose your option :\n\t\t\t1.Update Student Name\n\t\
t\t2.Update Student Grade.\n\t\t\t3.Update mother and father's name\n\t\t\t4.Update
Student Contact No.\n\t\t\t5.Update Student CPGA");
printf("\n\n\t\t\tEnter Your Option : ");
scanf("%d", &choice);
if (choice == 1)
{
printf("\n\t\t\tEnter Student's Name to Update: ");
getchar();
gets(tempInformation.studentName);
strcpy(studentInformation.studentName,
tempInformation.studentName);

fwrite(&studentInformation, sizeof(studentInformation), 1, temp);


printf("\n\n\t\t\tUpdated successfully!\n\n");
}
else if (choice == 2)
{
printf("\n\t\t\tEnter Student's Grade to Update: ");
getchar();
gets(tempInformation.studentGrade);
strcpy(studentInformation.studentGrade,
tempInformation.studentGrade);

fwrite(&studentInformation, sizeof(studentInformation), 1, temp);


printf("\n\n\t\t\tUpdated successfully!\n\n");
}
else if (choice == 3)
{
printf("\n\t\t\tEnter Mother's name to Update: ");
getchar();
gets(tempInformation.mothersName);
strcpy(studentInformation.mothersName,
tempInformation.mothersName);

fwrite(&studentInformation, sizeof(studentInformation), 1, temp);


printf("\n\n\t\t\tUpdated successfully!\n\n");
}
else if (choice == 4)
{
printf("\n\t\t\tEnter Father's name to Update: ");
getchar();
gets(tempInformation.fathersName);
strcpy(studentInformation.fathersName,
tempInformation.fathersName);

fwrite(&studentInformation, sizeof(studentInformation), 1, temp);


printf("\n\n\t\t\tUpdated successfully!\n\n");
}
else if (choice == 5)
{
printf("\n\t\t\tEnter Student's Contact No. to Update: ");
getchar();
gets(tempInformation.studentContactNum);
strcpy(studentInformation.studentContactNum,
tempInformation.studentContactNum);

fwrite(&studentInformation, sizeof(studentInformation), 1, temp);


printf("\n\n\t\t\tUpdated successfully!\n\n");
}
else if (choice == 6)
{
printf("\n\t\t\tEnter School fee amount to Update: ");
scanf("%f", &tempInformation.schoolFeeAmt);
studentInformation.schoolFeeAmt = tempInformation.schoolFeeAmt;

fwrite(&studentInformation, sizeof(studentInformation), 1, temp);


printf("\n\n\t\t\tUpdated successfully!\n\n");
}
else
{
printf("\n\t\t\tInvalid Option.");
fwrite(&studentInformation, sizeof(studentInformation), 1, temp);
}
}
else
{
fwrite(&studentInformation, sizeof(studentInformation), 1, temp);
}
}

fclose(fileOne);
fclose(temp);

remove("studentInfo.txt");
rename("temp.txt", "studentInfo.txt");

if (flag == 0)
{
printf("\n\t\t\tStudent Id is not found");
}

printf("\n\n\t\t\tEnter any keys to continue.......");


getch();
}

void deleteInfo()
{
FILE *fileOne = fopen("studentInfo.txt", "rb");
FILE *temp = fopen("temp.txt", "wb");

Student studentInformation, tempInformation;

int choice, flag = 0;

if (fileOne == NULL || temp == NULL)


{
printf("\n\t\t\tError !\n");
}
system("cls");

printf("\t\t\t\t====== Delete Student Information ======\n");

printf("\n\t\t\tEnter Student's ID : ");


getchar();
gets(tempInformation.studentId);

while (fread(&studentInformation, sizeof(studentInformation), 1, fileOne) == 1)


{
if (strcmp(studentInformation.studentId, tempInformation.studentId) == 0)
{
flag++;
printf("\n\t\t\tAre you sure to delete ??\n\t\t\t\t1.Yes\n\t\t\t\
t2.Back\n\t\t\t\tEnter Your Option : ");
scanf("%d", &choice);
if (choice == 1)
{
printf("\n\n\t\t\tInformation has been deleted successfully!\n\n");
}
else if (choice == 2)
{
fwrite(&studentInformation, sizeof(studentInformation), 1, temp);
}
else
{
printf("\n\t\t\tInvalid Option");
fwrite(&studentInformation, sizeof(studentInformation), 1, temp);
}
}
else
{
fwrite(&studentInformation, sizeof(studentInformation), 1, temp);
}
}

fclose(fileOne);
fclose(temp);

remove("studentInfo.txt");
rename("temp.txt", "studentInfo.txt");

if (flag == 0)
{
printf("\n\t\t\tStudent Id is not found");
}

printf("\n\n\t\t\tEnter any keys to continue.......");


getch();
}

void searchInfo()
{
FILE *fileOne = fopen("studentInfo.txt", "rb");

Student studentInformation;

int choice, flag = 0;


char studentID[20], studentGrade[10];

if (fileOne == NULL)
{
printf("\n\t\t\tError !\n");
}

system("cls");

printf("\t\t\t\t====== Search Student Information ======\n");

printf("\n\t\t\tChoose your option :\n\t\t\t1.Search by Student ID\n\t\t\


t2.Search by Student Grade.");
printf("\n\n\t\t\tEnter Your Option : ");
scanf("%d", &choice);

if (choice == 1)
{
system("cls");
printf("\t\t\t\t====== Search Student Information ======\n");
printf("\n\n\t\t\tEnter Student ID : ");
getchar();
gets(studentID);
while (fread(&studentInformation, sizeof(studentInformation), 1, fileOne)
== 1)
{
if (strcmp(studentInformation.studentId, studentID) == 0)
{
flag++;
printf("\n\t\t\tStudent Name : %s\n\t\t\tStudent ID : %s\n\t\t\
tStudent Grade : %s\n\t\t\tMother's name : %s\n\t\t\tStudent Contact No. : %s\n\t\
t\tSchool fee amount : %.2f\n", studentInformation.studentName,
studentInformation.studentId, studentInformation.studentGrade,
studentInformation.mothersName, studentInformation.fathersName,
studentInformation.studentContactNum, studentInformation.schoolFeeAmt);
}
}
if (flag == 0)
{
printf("\n\t\t\tStudent Id is not found");
}
}
else if (choice == 2)
{
system("cls");
printf("\t\t\t\t====== Search Student Information ======\n");
printf("\n\n\t\t\tEnter Student Grade. : ");
getchar();
gets(studentGrade);
printf("\n\n\t\t%-20s%-13s%-10s%-25s%-15s%-18s%-s\n", "Name", "ID",
"Grade", "Mother's name", "Father's name", "Contact", "School Fee anount");
printf("\t\
t----------------------------------------------------------------------------------
------");
while (fread(&studentInformation, sizeof(studentInformation), 1, fileOne)
== 1)
{
if (stricmp(studentInformation.studentGrade, studentGrade) == 0)
{
flag++;
printf("\n\n\t\t%-20s%-13s%-10s%-25s%-15s%-18s%-.2f",
studentInformation.studentName, studentInformation.studentId,
studentInformation.studentGrade, studentInformation.mothersName,
studentInformation.fathersName, studentInformation.studentContactNum,
studentInformation.schoolFeeAmt);
}
}
if (flag == 0)
{
printf("\n\t\t\tStudent Id is not found");
}
}
else
{
printf("\n\t\t\tInvalid Option");
}

fclose(fileOne);

printf("\n\n\n\t\t\tEnter any keys to continue.......");


getch();
}

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