Learn to Code in C Step by Step, from Your First Program to Pointers, Memory, and Real Projects

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Learn C from the very beginning — and finally understand how programs really work.

C sits underneath operating systems, databases, language runtimes, and the tiny computers inside everyday devices. Learning it teaches you what memory is, what a pointer really does, and why some bugs crash a program while others quietly corrupt data. This book teaches C from zero, with no programming experience required. Every idea starts with a small, complete program you compile and run yourself, and every sharp edge of C comes with the safe habit right next to it.

Instead of disconnected exercises, you build one real program across the whole book: toolshed, a command-line app for a community tool-lending library. It grows from a single printf into a multi-file project with structs, dynamic memory, CSV files, a waiting list, date calculations, late fees, tests, a Makefile, and a proper command-line interface.

• 517 pages · 28 chapters + 4 appendices
• For complete beginners — no programming experience needed
• Setup on Windows, macOS, and Linux, plus compiling and running from the terminal
• Variables, types, input and output, decisions, loops, and functions
• Arrays, strings, and pointers — explained gently with plenty of practice
• Structs, malloc and free, files, and linked lists
• Multi-file programs, header files, and building with Make
• Debugging, error handling, testing, and sanitizers
• Undefined behavior and how to write safe, robust C
• Every complete program compiled and run with warnings turned on

Table Of Contents

Part I — Getting Started

• Ch 1 · What Is C, and Why Learn It?
• Ch 2 · Setting Up: Compiler, Editor, and Terminal
• Ch 3 · Your First Program: Anatomy of hello.c
• Ch 4 · Variables, Types, and Arithmetic
• Ch 5 · Input and Output with printf and scanf

Part II — Control Flow and Functions

• Ch 6 · Making Decisions: if, else, and switch
• Ch 7 · Loops: while, for, and do-while
• Ch 8 · Functions: Breaking Programs into Pieces
• Ch 9 · Scope, Lifetime, and the Preprocessor
• Ch 10 · Debugging Your Programs

Part III — Arrays, Strings, and Pointers

• Ch 11 · Arrays
• Ch 12 · Strings and Characters
• Ch 13 · Pointers Explained Gently
• Ch 14 · Pointers and Arrays, Together
• Ch 15 · Project: The Tool Inventory

Part IV — Building Data

• Ch 16 · Structs: Grouping Related Data
• Ch 17 · Dynamic Memory: malloc, free, and Friends
• Ch 18 · Working with Files
• Ch 19 · Linked Lists and Other Dynamic Structures

Part V — Organizing Real Programs

• Ch 20 · Multi-File Programs and Header Files
• Ch 21 · Building with Make
• Ch 22 · Bits, Bytes, and Integer Details
• Ch 23 · Error Handling and Defensive Programming
• Ch 24 · Testing C Code

Part VI — Projects and Next Steps

• Ch 25 · Project: The Loan Tracker
• Ch 26 · Project: A Command-Line Tool with Arguments
• Ch 27 · Writing Safe and Robust C
• Ch 28 · Next Steps: Where C Can Take You

Appendices

• App A · C Cheat Sheet
• App B · Standard Library Quick Reference
• App C · Checklists
• App D · Glossary

WHO IT IS FOR
Complete beginners with no programming experience, students taking a first course in C, programmers from Python or JavaScript who want to understand memory and pointers, and makers heading toward embedded or systems programming.

FORMAT
PDF (A4), 517 pages, English, clickable table of contents and PDF bookmarks. 1st Edition, 2026. Published by thenexbooks.

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