Compilare: warning: unused import: `std::io::BufRead` --> main.rs:1:5 | 1 | use std::io::BufRead; | ^^^^^^^^^^^^^^^^ | = note: `#[warn(unused_imports)]` on by default warning: unused variable: `x` --> main.rs:4:9 | 4 | let x = 10; | ^ help: if this is intentional, prefix it with an underscore: `_x` | = note: `#[warn(unused_variables)]` on by default warning: variable `result` is assigned to, but never used --> main.rs:10:13 | 10 | let mut result = 0; | ^^^^^^ | = note: consider using `_result` instead warning: 3 warnings emitted