4. Read user input

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https://github.com/prophen/intro-to-rust/blob/nikema's-notes/exercises/04.md

• Memory safety is the guarantee that Rust gives us
• ownership means values get passed and when the value is no longer needed it is dropped
• borrowing is passing by reference

String -> &String -> &str
Value       Reference    String Slice?

---

use std::io;

fn main() {
    println!("Hi, what's your name? ");
    let mut name = String::new();
    io::stdin().read_line(&mut name).unwrap();
    println!("Hello {}", name);
}

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