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

Function arguments

Often, we want our functions to be somewhat flexible, so they don't do exactly the same thing every time we call them. Consider the following two functions:

function add_2_and_3()
    return 2 + 3
end_function
function add_5_and 9()
    return 5 + 9
end_function

These two functions add two numbers and return the result. The first one adds 2 and 3, and the second one does the same but with 5 and 9. Now, these are just two pairs of numbers. If we would like to have a function that could add any numbers, we would need to create an endless number of functions.

But if we look at what the functions do, we can see that they are actually doing the same thing. They add two numbers and return the result. The only thing that changes are the numbers that are used in the addition operation.

What we want is to be able to pass the numbers we want to be added to the function so it can use them in the calculation, and by...