Error code E0580
The main
function was incorrectly declared.
Erroneous code example:
fn main(x: i32) { // error: main function has wrong type println!("{}", x); }
The main
function prototype should never take arguments.
Example:
fn main() { // your code }
If you want to get command-line arguments, use std::env::args
. To exit with a
specified exit code, use std::process::exit
.