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

The dangling else… problem

When multiple statements are written in if()… else… statements where a single statement is expected, surprising results may occur. This is sometimes called thedangling else problem and is illustrated in the following code snippet:

if( x == 0 ) if( y == 0 ) printf( "y equals 0\n" );
else printf( "what does not equal 0\n" );

To whichif()… does the else… belong—the first one or the second one? To correct this possible ambiguity, it is often best to always use compound statements in if()… and else… clauses to make your intention unambiguous. Many compilers will give an error such as the following: warning: add explicit braces to avoid dangling else [-Wdangling-else].

On the other hand, some do not. The best way to remove doubt is to use brackets to associate the else…clause with the proper if()… clause. The following code snippet will remove both...