How to read an integer input from the user in Rust 1.0?

Question

Existing answers I\'ve found are all based on from_str (such as Reading in user input from console once efficiently), but apparently from_str(x) h

Answer 1

I would definitely use the file system Rust-Lang provides std::fs (See more here: https://doc.rust-lang.org/stable/std/fs/) But more particularly https://doc.rust-lang.org/stable/std/fs/fn.read_to_string.html

Let's say you just want to read input of a text file, try this :

use std::fs
or
use std::fs::read_to_string

fn main() {
    println!("{}", fs::read_to_string("input.txt"));   
}