#![allow(dead_code, deprecated, unused_variables, unused_mut)]
#![allow(dead_code)]
use std::fs::File;
use std::io::prelude::*;
use std::io;
struct Info {
    name: String,
    age: i32,
    rating: i32,
}
fn write_info(info: &Info) -> io::Result<()> {
    let mut file = match File::create("my_best_friends.txt") {
        Err(e) => return Err(e),
        Ok(f) => f,
    };
    if let Err(e) = file.write_all(format!("name: {}\n", info.name).as_bytes()) {
        return Err(e);
    }
    if let Err(e) = file.write_all(format!("age: {}\n", info.age).as_bytes()) {
        return Err(e);
    }
    if let Err(e) = file.write_all(format!("rating: {}\n", info.rating).as_bytes()) {
        return Err(e);
    }
    Ok(())
}
fn main() {}