Process quitting in Rust


I decided to make an application that will find the median of any given list of numbers.
I wanted to make an option to quit the process, but when I tested it, the process keeps going.

Whenever I type "q" it should stop, however it does not.

use std::io;

fn main() {
    let mut v1: Vec<i32> = Vec::new();

    loop {
        println!("Enter: ");

        let mut inp: String = String::new();

        io::stdin().read_line(&mut inp).expect("Failure");
        let upd_inp: i32 = match inp.trim().parse() {
            Ok(num) => num,
            Err(_) => if inp == String::from("q") {
            } else {

        println!("{:?}", v1);

>Solution :

str::trim doesn’t modify the string. It returns a slice of the string (basically, a substring). So even though you did inp.trim() on an earlier line, the inp being compared in your if statement still has a newline at the end. Simply change your comparison to

inp.trim() == String::from("q")

and the input of q will be detected as intended.

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