Book Image

Learn C Programming - Second Edition

By : Jeff Szuhay
Book Image

Learn C Programming - Second Edition

By: Jeff Szuhay

Overview of this book

The foundation for many modern programming languages such as C++, C#, JavaScript, and Go, C is widely used as a system programming language as well as for embedded systems and high-performance computing. With this book, you'll be able to get up to speed with C in no time. The book takes you through basic programming concepts and shows you how to implement them in the C programming language. Throughout the book, you’ll create and run programs that demonstrate essential C concepts, such as program structure with functions, control structures such as loops and conditional statements, and complex data structures. As you make progress, you’ll get to grips with in-code documentation, testing, and validation methods. This new edition expands upon the use of enumerations, arrays, and additional C features, and provides two working programs based on the code used in the book. What's more, this book uses the method of intentional failure, where you'll develop a working program and then purposely break it to see what happens, thereby learning how to recognize possible mistakes when they happen. By the end of this C programming book, you’ll have developed basic programming skills in C that can be easily applied to other programming languages and have gained a solid foundation for you to build on as a programmer.
Table of Contents (38 chapters)
1
Part 1: C Fundamentals
10
Part 2: Complex Data Types
19
Part 3: Memory Manipulation
22
Part 4: Input and Output
28
Part 5: Building Blocks for Larger Programs

Using macros

make provides a macro facility. This is similar to C’s preprocessor directives. Unlike preprocessor macros, make has a number of predefined macros. We’ll encounter just a few of them here. If you want to see the full list (and “full” is an understatement), use the following command:

make –p

You’ll get a bewildering list of macros. They are there for very advanced and wide-ranging uses of make.

Using macros involves two steps:

  1. Define the macro name and assign it a value.
  2. Use the macro in a rule by wrapping it in $(…).

The two predefined macros we’ll use are CC for which compiler to call and CCFLAGS for compiler options. With this in mind, modify your makefile to define and use these macros as follows:

CC      = clang
CCFLAGS = -Wall -Werror -std=c17
dealer: card.c hand.c deck.c dealer.c
  $(CC) card.c hand.c deck.c dealer.c -o dealer $(CCFLAGS)
...