Book Image

Learn C Programming

By : Jeff Szuhay
Book Image

Learn C Programming

By: Jeff Szuhay

Overview of this book

C is a powerful general-purpose programming language that is excellent for beginners to learn. This book will introduce you to computer programming and software development using C. If you're an experienced developer, this book will help you to become familiar with the C programming language. This C programming book takes you through basic programming concepts and shows you how to implement them in C. Throughout the book, you'll create and run programs that make use of one or more C concepts, such as program structure with functions, data types, and conditional statements. You'll also see how to use looping and iteration, arrays, pointers, and strings. As you make progress, you'll cover code documentation, testing and validation methods, basic input/output, and how to write complete programs in C. By the end of the book, you'll have developed basic programming skills in C, that you can apply to other programming languages and will develop a solid foundation for you to advance as a programmer.
Table of Contents (33 chapters)
Section 1: C Fundamentals
Section 2: Complex Data Types
Section 3: Memory Manipulation
Section 4: Input and Output
Section 5: Building Blocks for Larger Programs

Heap memory management

The amount or degree of heap memory management required in a program is a consideration that depends on the complexity and expected runtime duration of that program.

When heap memory is initialized at the start of a program and remains largely unchanged after it is initialized, little heap management will be required. It may be acceptable to simply let heap memory exist until the program exits. The free() function may never be called in such a program.

On the other hand, for programs whose complexity is large, or where heap memory is heavily used, or where the runtime duration is hours, days, months, or even years, heap management is essential. A program that controls, say, a banking system, a fighter jet, or a petroleum refinery might have catastrophic consequences if the heap for that program is not properly managed, causing the program to terminate abnormally. The bank may suddenly show a pile of money in your account or take it all away...