Book Image

Computer Programming for Absolute Beginners

By : Joakim Wassberg
4 (1)
Book Image

Computer Programming for Absolute Beginners

4 (1)
By: Joakim Wassberg

Overview of this book

Learning how to code has many advantages, and gaining the right programming skills can have a massive impact on what you can do with your current skill set and the way you advance in your career. This book will be your guide to learning computer programming easily, helping you overcome the difficulties in understanding the major constructs in any mainstream programming language. Computer Programming for Absolute Beginners starts by taking you through the building blocks of any programming language with thorough explanations and relevant examples in pseudocode. You'll understand the relationship between computer programs and programming languages and how code is executed on the computer. The book then focuses on the different types of applications that you can create with your programming knowledge. You'll delve into programming constructs, learning all about statements, operators, variables, and data types. As you advance, you'll see how to control the flow of your programs using control structures and reuse your code using functions. Finally, you'll explore best practices that will help you write code like a pro. By the end of this book, you'll be prepared to learn any programming language and take control of your career by adding coding to your skill set.
Table of Contents (19 chapters)
1
Section 1: Introduction to Computer Programs and Computer Programming
6
Section 2: Constructs of a Programming Language
7
Chapter 5: Sequence – The Basic Building Block of a Computer Program
14
Section 3: Best Practices for Writing High-Quality Code
Appendix B: Dictionary
A
B
C
D
E
F
G
H
I
J
K
L
M
N
O
P
R
S
T
U
V
W

Iteration with the do while loop

The do while loop has the same features as the while loop. do while works on a condition and can be used when we don't know how many iterations we will need to make.

The difference from the while loop is that where a while loop might never execute because the condition could be false the first time we test it. In comparison, the do while loop is guaranteed to run at least once. The reason for this is because the condition is moved from the beginning of the loop to the end of it.

This can be good for several reasons, and it can make our guessing game slightly less complicated. However, before we do that, we should look at what a do while loop looks like:

do
    …
    some code that eventually sets the condition to false
while condition

The do keyword marks the beginning of the loop. As you can see, there is nothing more on this line, so the program must run through the code inside the loop...