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

Compiling your first C program

Having successfully entered and saved your hello1.c file, it is now time to compile it:

  1. In a Terminal, command line, or console window (depending on your OS), with the current working directory the same as your hello1.c file, enter $ cc hello1.c.
  2. Once this is done and you have a new command-line prompt, verify that you have a file named a.out.

You have completed your first compiling phase of the program development cycle.

If the compiler spews out some error messages, try to read what the compiler is telling you and try to understand what error it is telling you to fix. Always focus on the very first error message first; later error messages are usually the result of the very first error. Then, go back to the editing phase and see where your entered program is different than what has been shown here. The two must match exactly. Then, come back to this phase; hopefully, your program will compile successfully (no error messages).

As we progress through this book, we'll add more compiler options to the cc command to make our life easier.