rustlings/solutions/01_variables/variables4.rs

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2024-05-20 19:47:57 -04:00
fn main() {
// In Rust, variables are immutable by default.
// Adding the `mut` keyword after `let` makes the declared variable mutable.
let mut x = 3;
println!("Number {x}");
x = 5; // Don't change this line
println!("Number {x}");
}