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

Understanding the general format specifier form

So far, we have seen, for the most part, the simplest format specifier,%<x>, or occasionally even %<n><x>, where<x>is an output conversion type and<n>is the field width into which the value is printed. Depending on the value, the formatted output may have added padding or be truncated to fit or even overflow beyond the requested field width. We can expand these simple concepts to the more general form of a format specifier.

The general form of a format specifier begins with the percentage character (%) and has the following elements, in order:

  • Zero or more flag characters:
    • Left-aligned: This is the - character. If missing, the value will be right-aligned.
    • The + sign to show a positive or negative value, or a space to only show a - sign.
    • Zero-padding: 0.
    • A variant of formatting: This is the # character; the variant depends on the conversion type.
  • An...