Greetings, future coders! Are you ready to dive into the fascinating journey of Rust? Today, we're going to explore the fundamentals of Rust, focusing on syntax and comments. By the end of this lesson, you'll have written your first simple Rust program.
Rust, a fast and memory-efficient language, serves as the launchpad of your coding journey. It is primarily used for system programming, but also finds applications elsewhere.
Much like English has grammar rules, Rust follows a syntax. Let's explore this exciting world together!
In Rust, just like in many other languages, we use statements to execute actions. Each statement ends with a semicolon (;
). Rust uses curly braces ({ }
) to delineate a block of code.
Consider this straightforward Rust syntax example:
In this case, we've declared the main
function, which acts as the starting point of the program, and added a statement that prints "Hello, Rust World!" Don't worry if you don't understand every line of this code just yet. We'll break down each component step by step in this lesson.
Let's dive deeper into writing your first Rust program! Below is a straightforward Rust program that we have examined:
Now, we'll analyze each piece of the program:
fn main() { }
: This function, called , represents the start of our program. When you run a Rust program, this is the function that initiates execution. Don't worry if concepts like still seem unfamiliar to you. Just remember that the function should always carry this name and be represented in this way.
