Course/Module 9/Topic 1 of 3Advanced

Structures & File Handling - Concepts

Explore the key concepts of structures & file handling with practical examples and exercises.

45 min•By Priygop Team•Last updated: Feb 2026

Introduction to Structures & File Handling

In this section, we cover the fundamental aspects of structures & file handling. You'll learn core concepts, see real-world examples, and understand how to apply them in your projects.

Key Concepts

Understanding the core principles of structures & file handling
Practical applications and real-world use cases
Step-by-step implementation guides
Common patterns and best practices
Tips for debugging and troubleshooting
Performance optimization techniques

Structures & File Handling - Code Example

Example

#include <stdio.h>

typedef struct {
    char name[50];
    int age;
    float gpa;
} Student;

void printStudent(Student s) {
    printf("Name: %s, Age: %d, GPA: %.1f\n", s.name, s.age, s.gpa);
}

int main() {
    Student s1 = {"Alice", 20, 3.8};
    printStudent(s1);
    
    // File I/O
    FILE *f = fopen("data.txt", "w");
    if (f != NULL) {
        fprintf(f, "%s %d %.1f\n", s1.name, s1.age, s1.gpa);
        fclose(f);
        printf("Written to file\n");
    }
    return 0;
}

Try It Yourself: Structures & File Handling

Try It Yourself: Structures & File HandlingC

C Editor

✓ ValidTab = 2 spaces

#include <stdio.h>

typedef struct {
    char title[100];
    char author[50];
    int year;
    float price;
} Book;

int main() {
    Book books[] = {
        {"C Programming", "Kernighan", 1988, 45.99},
        {"Clean Code", "Martin", 2008, 39.99},
        {"CLRS", "Cormen", 2009, 89.99}
    };
    int n = 3;
    
    for (int i = 0; i < n; i++)
        printf("%s by %s (%d) - $%.2f\n", books[i].title, books[i].author, books[i].year, books[i].price);
    return 0;
}

Output

Click ▶ Run to see the result

Edit the code on the left, then click Run

C|21 lines|474 chars|✓ Valid syntax

UTF-8

Quick Quiz: Structures & File Handling

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