hello world in rust

To write a "Hello, World!" program in Rust, you can use the println! macro that prints a formatted string to the console. Here's the code:

main.rs
fn main() {
    println!("Hello, World!");
}
45 chars
4 lines

In this code, fn main() is the entry point of the program, and println!("Hello, World!") prints the message "Hello, World!" to the console followed by a newline.

To run this program, save the code into a file with the extension .rs, for example, hello_world.rs. Then, compile the program using the Rust compiler by running the command rustc hello_world.rs. Finally, run the executable file that is generated by running the command ./hello_world on Linux, or hello_world.exe on Windows.