Constants and literals in C++ - Mini Project: Build & Apply

Constants and Literals in C++

📖 Scenario: You are creating a simple program to store and display fixed information about a book. This information should not change during the program.

🎯 Goal: Build a C++ program that uses constants and literals to store book details and then prints them.

📋 What You'll Learn

Use const keyword to declare constants

Use literals for string and numeric values

Print the constants to the console

💡 Why This Matters

🌍 Real World

Constants are used to store fixed information like configuration settings, fixed messages, or values that should not change during program execution.

💼 Career

Understanding constants and literals is essential for writing safe and readable code in software development, especially in embedded systems, finance, and configuration management.

1

Create constants for book title and author

Create two constants called bookTitle and bookAuthor with the exact string values "The Great Gatsby" and "F. Scott Fitzgerald" respectively.

C++

// Your code here

Need a hint?

Use const char* const to declare string constants in C++.

2

Add a constant for the book's publication year

Add a constant integer called publicationYear and set it to the literal value 1925.

C++

const char* const bookTitle = "The Great Gatsby";
const char* const bookAuthor = "F. Scott Fitzgerald";
// Your code here

Need a hint?

Use const int to declare an integer constant.

3

Create a constant for the book price

Create a constant floating-point variable called bookPrice and set it to the literal value 10.99.

C++

const char* const bookTitle = "The Great Gatsby";
const char* const bookAuthor = "F. Scott Fitzgerald";
const int publicationYear = 1925;
// Your code here

Need a hint?

Use const double for decimal numbers.

4

Print all constants to the console

Write std::cout statements to print bookTitle, bookAuthor, publicationYear, and bookPrice each on a new line.

C++

const char* const bookTitle = "The Great Gatsby";
const char* const bookAuthor = "F. Scott Fitzgerald";
const int publicationYear = 1925;
const double bookPrice = 10.99;
// Your code here

Need a hint?

Use std::cout and std::endl to print each constant on its own line.