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

Introducing the do … while() statement

The do…while() statement has the following syntax:

do statement_body while( continuation_expression );

The only difference between this statement and the while()_statement is that, in thedo…while() statement, statement_body is executed beforecontinuation_expression is evaluated. If the continuation_expression result is true, the loop repeats. When continuation_expression evaluates to false, the loop ends. Note also the terminating semicolon. If the continuation_expressioninitially evaluates to false, the statement_body loop is executed once and only once.

Returning again to Gauss's problem, the similarities to the while()_ statement are clear. In fact, for this problem, there is a very little difference between the while()_ and do…while() statements.

The sumNviaDoWhile() function in the gauss_loop.c program can be seen in the following code block:

int sumNviaDoWhile...