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

Running your first C program

Your hello1.c program successfully compiled and you now have an a.out file in the same directory. It's time to run it! Let's get started:

  1. In a Terminal, command line, or console window (depending on your OS), navigate to the directory that holds a.out.
  2. At the command prompt, usually indicated by a $ in the first column, enter ./a.out.
  3. You should see Hello, world!.
  4. If you see that, we can now verify the output of your program.
  5. Note that the command prompt, $, is not on the same line as Hello, world!. This means you correctly entered \n in the output stream. If not, you need to re-edit hello1.c and make sure \n occurs immediately preceding the second ", recompile it, and rerun a.out.
  6. If Hello, world! is on a line by itself with a command prompt before and after it – woohoo! You did it!

It's always important to remember to do a little dance, and make a little joy, get down tonight! when you've successfully completed something. Programming can be very frustrating, so remembering to celebrate even your small successes will make your life a little bit more joyful through all the frustration. Too many programmers forget this incremental and regular step of celebrating with joy!