C Final Project Tutorial

1. Project Description

For your final project, we'll build a **Student Record Management System**. This system will allow users to:

• Add new student records
• Search for students
• Update records
• Delete records
• Save and load records from a file

2. Setting Up the Project

Start by creating the main file and a directory for organizing your source files:

mkdir StudentRecords
cd StudentRecords
touch main.c student.h student.c
                

Use `student.h` for declaring structures and function prototypes, and `student.c` for implementation.

3. Structuring the Code

Define a structure for student records in `student.h`:

typedef struct {
    int id;
    char name[50];
    float grade;
} Student;

void addStudent();
void displayStudents();
void saveToFile();
void loadFromFile();
                

Each function will handle a specific feature of the system.

4. Implementing Features

Add Student

#include "student.h"
#include 
#include 
#include 

Student students[100];
int count = 0;

void addStudent() {
    printf("Enter ID: ");
    scanf("%d", &students[count].id);
    printf("Enter Name: ");
    scanf("%s", students[count].name);
    printf("Enter Grade: ");
    scanf("%f", &students[count].grade);
    count++;
}
                

Save and Load Data

void saveToFile() {
    FILE *file = fopen("students.dat", "wb");
    fwrite(students, sizeof(Student), count, file);
    fclose(file);
}

void loadFromFile() {
    FILE *file = fopen("students.dat", "rb");
    if (file) {
        count = fread(students, sizeof(Student), 100, file);
        fclose(file);
    }
}
                

5. Testing and Finalizing

Combine all features in `main.c`:

#include "student.h"
#include 

int main() {
    int choice;
    loadFromFile();
    
    while (1) {
        printf("\n1. Add Student\n2. Display Students\n3. Save & Exit\nChoose: ");
        scanf("%d", &choice);

        switch (choice) {
            case 1: addStudent(); break;
            case 2: displayStudents(); break;
            case 3: saveToFile(); return 0;
            default: printf("Invalid choice\n");
        }
    }
}
                

Test thoroughly, ensure edge cases are handled, and consider adding error-checking mechanisms for a robust application.