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

Writing names in sorted order

The only thing left now is to verify our program. We will run the program with these command-line arguments in the following order:

  1. sortNames
  2. sortNames -o
  3. sortNames -i
  4. sortNames -i -o sorted data

In each test case, we will enter the names Tom, Dick, and Jane. The file should be left over from when we ran createUnsorted.c earlier and contain five names. You should see the following output from the first case:

You should see the following output from the second test case:

The names.datafileshould still exist from our earlier test. Here, we use it as input and see that we've sorted those five names, as follows:

In the last case, we...