Compilare: warning: unused import: `Write` --> main.rs:3:35 | 3 | use std::io::{BufRead, BufReader, Write}; | ^^^^^ | = note: `#[warn(unused_imports)]` on by default warning: unused `std::result::Result` that must be used --> main.rs:22:5 | 22 | fs::write("adunare.out", print_val); | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ | = note: `#[warn(unused_must_use)]` on by default = note: this `Result` may be an `Err` variant, which should be handled warning: 2 warnings emitted