For you to past the tests, the "Hello, World" should end with a fullstop like this "Hello, World."

Just use a scanner to read stream then print boath hello word and the line.

print("hello! world"

How do you solve this challenge? When I submit my code, it remains "unsolved" but it gave me full credit under the submissions tab.

Rust

fn main() {
    println!("Hello, World.");
    let mut input_string = String::new();
    std::io::stdin().read_line(&mut input_string);
    println!("{input_string}");
}