Lesson 1 - Hello World

Let’s start with one of the most important programs in programming: Hello World!

When you run the code, it should display “Hello, world!”

Lets break down the code deeper:

fn tells rust that we are defining a function.

A function is a block of code that performs a particular task. In our case, it displays “Hello, world!”

main is a special function.

When you run an executable Rust program, execution begins inside main.

Curly braces define the body of a function. Everything between them belongs to that function.

println! prints information to the terminal.

println! is a macro, rather than an ordinary function.

You don't need to understand macros yet. For now, just remember that println! is used to print text.

"Hello, world!" is a string literal.

It represents text.

A semicolon (;) marks the end of a statement.