Hello Cargo - Your First Rust Project | Rust by Examples (Lesson 1)

Hello Cargo - Your First Rust Project

Getting started with Rust is simple and efficient using Cargo, Rust’s built-in package manager and build tool. In this lesson, you will learn how to create a new Rust project, understand its structure, and run your first program using Cargo commands.

Code

// src/main.rs
fn main() {
  // Print a greeting message to the console
  println!("Hello, Cargo! Welcome to your first Rust project.");
  
  // Add a second message
  println!("This is powered by Rust and managed by Cargo.");
}

Key Points

• Use cargo new project_name to create a new Rust project with the standard structure.
• The Cargo.toml file defines your project metadata and dependencies.
• Your Rust source code lives in src/main.rs, which contains the program’s entry point.
• cargo check quickly verifies your code without producing binaries.
• cargo build compiles your project, and cargo run compiles and executes it in one step.
• The println! macro outputs text to the console; the exclamation mark indicates it’s a macro, not a function.