Online Rust Compiler

How to Use

• Write a single-file Rust program with the entry function fn main().
• Need input? Put it in the Standard Input box; it will be passed via stdin.
• Program arguments are space-separated. For example: hello world becomes args[0]=hello and args[1]=world.
• Click Run to compile and execute. Stdout and stderr show in the Output area.
• Timeouts: compilation and execution each have a 2000 ms limit; keep programs concise.
• Restrictions: no network access; runs in a sandbox. Long-running or interactive programs may be terminated.

Examples

fn main() {
  println!("Hello, world!");
}

use std::io::{self, Read};

fn main() {
  let mut input = String::new();
  io::stdin().read_to_string(&mut input).unwrap();
  println!("Input was: {}", input.trim());
}

use std::env;

fn main() {
  for (i, a) in env::args().enumerate() {
    println!("arg[{}] = {}", i, a);
                }
                }