rustlings 6.5.0

Small exercises to get you used to reading and writing Rust code!
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fn main() {
    let number = "T-H-R-E-E"; // Don't change this line
    println!("Spell a number: {number}");

    // TODO: Fix the compiler error by changing the line below without renaming the variable.
    number = 3;
    println!("Number plus two is: {}", number + 2);
}