[data-types] wrote code for section

# This file is automatically @generated by Cargo.

# It is not intended for manual editing.

version = 4

[[package]]

name = "data-types"

version = "0.1.0"

[package]

name = "data-types"

version = "0.1.0"

edition = "2024"

[dependencies]

use std::io;

fn main() {

    let guess: u32 = "42".parse().expect("Not a number!"); // must add ": u32" or else the compiler doesn't know what type to expect

    println!("{guess}"); // :)

    // compound data type: a tuple

    // let tup: (i32, f64, u8) = (500, 6.4, 1); // this is allowed

    let tup = (500, 6.4, 1);

    let (_x, y, _z) = tup;

    println!("the value of y is {y}");

    // you can access tuple elements by using ".0", ".1", etc.

    let x: (i32, f64, u8) = (500, 6.4, 1);

    let five_hundred = x.0;

    let six_point_four = x.1;

    let one = x.2;

    let mut x: (i32, i32) = (1, 2);

    x.0 = 0;

    x.1 += 5;

    // here's an array

    let a = [1, 2, 3, 4, 5];

    // here's another array

    let months = ["January", "February", "March", "April", "May", "June", "July",

        "August", "September", "October", "November", "December"];

    // here's how to explicitly define types in an array

    let b: [i32; 5] = [1, 2, 3, 4, 5];

    let threes = [3; 5]; // here's how to initialize five values with "3"

    println!("{}", threes[3]);

    // another example:

    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}");

}