[rustc.git] / src / doc / book / listings / ch03-common-programming-concepts / no-listing-15-invalid-array-access / src / main.rs

use std::io;

fn main() {
    let a = [1, 2, 3, 4, 5];

    println!("Please enter an array index.");

    let mut index = String::new();

    io::stdin()
        .read_line(&mut index)
        .expect("Failed to read line");

    let index: usize = index
        .trim()
        .parse()
        .expect("Index entered was not a number");

    let element = a[index];

    println!("The value of the element at index {index} is: {element}");
}
Commit	Line	Data
5869c6ff XL	1	use std::io;
5869c6ff XL	2
74b04a01 XL	3	fn main() {
74b04a01 XL	4	let a = [1, 2, 3, 4, 5];
5869c6ff XL	5
	6	println!("Please enter an array index.");
	7
	8	let mut index = String::new();
	9
	10	io::stdin()
	11	.read_line(&mut index)
	12	.expect("Failed to read line");
	13
	14	let index: usize = index
	15	.trim()
	16	.parse()
	17	.expect("Index entered was not a number");
74b04a01 XL	18
	19	let element = a[index];
	20
04454e1e	21	println!("The value of the element at index {index} is: {element}");
74b04a01	22	}