Constants and literals - Mini Project: Build & Apply

Constants and Literals in C

📖 Scenario: You are creating a simple program to display information about a book. You will use constants and literals to store fixed information like the book's title, author, and the number of pages.

🎯 Goal: Build a C program that uses constants and literals to store and display book details.

📋 What You'll Learn

Use #define to create a constant for the maximum title length.

Use string literals to store the book's title and author.

Use an integer literal to store the number of pages.

Print the book information using printf.

💡 Why This Matters

🌍 Real World

Constants and literals are used to store fixed information like configuration values, messages, or fixed data in programs.

💼 Career

Understanding constants and literals is essential for writing clear, maintainable, and bug-free code in any software development job.

1

Create string literals for book title and author

Create two string variables called title and author and assign them the exact values "The Great Gatsby" and "F. Scott Fitzgerald" respectively.

C

// Your code here

Need a hint?

Use double quotes to create string literals in C.

2

Define a constant for maximum title length

Add a #define directive called MAX_TITLE_LENGTH and set it to 50.

C

char title[] = "The Great Gatsby";
char author[] = "F. Scott Fitzgerald";
// Your code here

Need a hint?

Use #define at the top of your code to create constants.

3

Create an integer literal for number of pages

Create an integer variable called pages and assign it the value 180.

C

#define MAX_TITLE_LENGTH 50
char title[] = "The Great Gatsby";
char author[] = "F. Scott Fitzgerald";
// Your code here

Need a hint?

Use an integer literal without quotes for numbers.

4

Print the book information

Use printf to display the book information in this exact format: Title: The Great Gatsby, Author: F. Scott Fitzgerald, Pages: 180.

C

#define MAX_TITLE_LENGTH 50
char title[] = "The Great Gatsby";
char author[] = "F. Scott Fitzgerald";
int pages = 180;
// Your code here

Need a hint?

Use %s for strings and %d for integers in printf.