Why structures are needed - See It in Action

Why structures are needed

📖 Scenario: Imagine you want to store information about a book in a library. Each book has a title, an author, and a number of pages. Using separate variables for each piece of information can get confusing and hard to manage when you have many books.

🎯 Goal: You will create a struct to group related information about a book together. This helps keep data organized and easy to use.

📋 What You'll Learn

Create a struct named Book with members title, author, and pages

Declare a variable myBook of type Book

Assign values to myBook.title, myBook.author, and myBook.pages

Print the book details using printf

💡 Why This Matters

🌍 Real World

Libraries, stores, and many programs use structures to keep related information together, like customer records or product details.

💼 Career

Understanding structures is essential for programming in C and many other languages, especially for jobs involving system programming, embedded systems, or software development.

1

Create the Book structure

Write a struct named Book with these members: char title[50], char author[50], and int pages.

C

# Your code here

Need a hint?

Use struct Book { ... }; syntax to define the structure.

2

Declare a variable of type Book

Declare a variable named myBook of type struct Book.

C

struct Book {
    char title[50];
    char author[50];
    int pages;
};

# Your code here

Need a hint?

Write struct Book myBook; to declare the variable.

3

Assign values to myBook members

Assign the string "The C Programming Language" to myBook.title, "Kernighan and Ritchie" to myBook.author, and the number 272 to myBook.pages. Use strcpy for strings.

C

struct Book {
    char title[50];
    char author[50];
    int pages;
};

struct Book myBook;

# Your code here

Need a hint?

Use strcpy(destination, source) to copy strings into the structure members.

4

Print the book details

Use printf to print the book's title, author, and pages in this format: Title: The C Programming Language, Author: Kernighan and Ritchie, Pages: 272.

C

#include 

struct Book {
    char title[50];
    char author[50];
    int pages;
};

struct Book myBook;

strcpy(myBook.title, "The C Programming Language");
strcpy(myBook.author, "Kernighan and Ritchie");
myBook.pages = 272;

# Your code here

Need a hint?

Use printf("Title: %s, Author: %s, Pages: %d\n", myBook.title, myBook.author, myBook.pages); to print the details.