L0-1 Background to C++

Why should you learn C++?

Learning C++ can be super cool! It's a language that lets you create really fast, efficient, and powerful computer programs. Here are some fun reasons why you might want to learn C++:

1. Super Speed: Imagine you have a race car, and you want it to go as fast as possible. Well, C++ is like that race car for computers! It's really good at making programs run quickly and smoothly. This is important for things like video games or special effects in movies, where you want everything to happen super fast.
2. Build Big Stuff: Have you ever seen a huge building with lots of different parts? C++ is great for building big programs like that. It helps you organize your code into different pieces, making it easier to work on and fix things later. Some big programs, like Microsoft Office or cool video games, use C++ to make them work smoothly.
3. Create Games: If you love video games, learning C++ can help you make your own! Many popular games, like Fortnite or any other game using unreal engine, use C++ because it allows developers to create high-performance games. This means that the games you create with C++ will run smoothly and respond quickly to player actions. It also gives you the ability to optimize your game code, making it faster and more efficient. With C++, you can bring your game ideas to life and create immersive experiences that players will love to explore and enjoy!
4. Join a Team: When you learn C++, you become part of a big team of programmers. They have created lots of helpful tools and pieces of code that you can use to make your own programs even better! It's like having a bunch of friends who want to help you succeed.

Remember, learning C++ is a bit more challenging than some other languages, but it can be really fun and exciting! You'll get to build amazing things and have a superpower to create software that works really well. Just like learning any new skill, it may take some practice and patience, but it's totally worth it!

What is a compiler and what is a compiled language

When you want to create a C++ program to run on a computer, you write code that can be read and understood by humans but the computer can't understand the C++ language directly, so the compiler helps with that. The compiler takes your C++ code, which is like a set of instructions, and translates it into a language that the computer can understand. It's like translating a book from English to another language that someone else can read. Once the compiler has translated your code into the computer's language, it creates a file called object code. This file contains all the instructions in a format that the computer can easily read and follow. Now, the computer can take that object code file and execute it, which means it follows all the instructions step by step just like you told it to.

C++ is called a compiled language because it requires a compiler to translate human readable code into code the computer can understand. Not all programming languages are a compiled language, such as python, but this course will focus on C++.

Common programming terms

In this C++ course, you'll find comprehensive explanations of various terms and concepts. However, it can be helpful to have a handy list of key words to refer back to that may not be directly explained in this course. While you might not be familiar with all of these terms right now, as you progress through the course, their meanings and explanations will become clear.

Algorithum

An algorithm is a step-by-step procedure or a set of rules for solving a specific problem. It describes the logic and flow of operations needed to accomplish a task.

Debugging

Debugging is the process of identifying and fixing errors or bugs in your code. It involves analyzing the program's behavior, using tools like breakpoints and step-by-step execution, and making corrections to ensure the code functions as intended.

Declaration

Declaring a variable involves specifying its type and name. It informs the compiler about the existence and type of a variable without allocating memory for it or assigning it a specific value.

Initialization

Initializing a variable refers to the process of assigning an initial value to a declared variable. It occurs after the declaration and allows you to provide an initial value for the variable. It's important to note that in C++, declaring a variable without initializing it can result in the variable holding an indeterminate value, which can lead to undefined behavior. To avoid this, it is generally recommended to initialize variables at the point of declaration whenever possible.

Libraries

Libraries are collections of pre-written code that provide additional functionality beyond what is available in the core C++ language. They contain functions, classes, and other components that can be utilized in your programs.

Syntax

Syntax refers to the set of rules that define the structure and composition of valid C++ code. It includes conventions such as the placement of semicolons, braces, parentheses, and keywords. Understanding and adhering to the syntax rules is crucial for writing correct code.