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

Creating and using an array of strings

Sometimes, we need to create a table of related string values. This table, in one form or another, is often called a lookup table. Once we construct this table, we can then look up string values based on an index into the table. To declare a one-dimensional lookup table for the days of the week, where the array index is equal to the day of the week, we would make the following declaration:

char* weekdays[] = { "Sunday" , 
"Monday" ,
"Tuesday" ,
"Wednesday" ,
"Thursday" ,
"Friday" ,
"Saturday" };

Notice that the strings are of different sizes. Also, notice that they are all string literals; this is acceptable because these names won't change. We can then use this table to convert a numerical day of the week to print the day, as...