Student Record System

Description

This program is a command-line based Student Record System written in C. It allows users to add, view, search, modify, and delete student records. The records are stored in a text file named students.txt. The system supports operations like sorting students by their marks and calculating the average marks of all students.

Features

• Add Student: Add a new student record to the system.
• Display Students: Display all student records.
• Search Student by Roll Number: Search for a student using their roll number.
• Calculate Average Marks: Calculate the average marks of all students.
• Sort Students by Marks: Sort student records based on their marks.
• Delete Student Information: Delete a specific student's information.
• Modify Student Information: Modify the details of an existing student.
• Delete All Records: Option to delete all records in the system.

Program Structure

Data Structures

• Student Struct: Holds the information of a student.
  • name: Student's name.
  • rollNumber: Student's roll number.
  • mark: Student's marks.
  • grade: Student's grade (determined based on marks).

Functions

• welcomePrompt: Displays a welcome message.
• promptUserName: Prompts the user to input their name.
• greetUser: Greets the user using their inputted name.
• printMainOptions: Displays the main menu options.
• handleMainOption: Handles the user's main menu choice.
• determineStudentGrade: Determines the student's grade based on their mark.
• addStudent: Adds a new student record.
• studentExists: Checks if a student already exists in the records.
• displayStudents: Displays all student records.
• searchStudentByRollNumber: Searches for a student using their roll number.
• calculateAverageMarks: Calculates the average marks of all students.
• sortStudentsByMarks: Sorts student records based on their marks.
• deleteStudentInformation: Deletes a specific student's information.
• modifyStudentInformation: Modifies the details of an existing student.
• saveStudentToFile: Saves a student's record to the file.
• getStudentsFromFile: Retrieves all student records from the file.
• saveAllStudentsToFile: Saves all student records to the file.
• deleteAllRecords: Deletes all student records from the file.

File Structure

• students.txt: The text file where all student records are stored. Each record is stored in the format: Name,RollNumber,Mark,Grade.

Compilation and Execution

Compilation

To compile the program, use the following command in the terminal:

gcc -o student_record_system main.c

Execution

After compilation, run the program using:

./student_record_system

Usage

1. Run the program.
2. Enter your name when prompted.
3. Choose an option from the main menu by entering the corresponding number.
4. Follow the on-screen instructions for the chosen operation.

License

This program is provided as-is without any warranties. Feel free to modify and distribute it as you like.