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rustlings/solutions/01_variables/variables4.rs
2025-12-18 19:06:05 +00:00

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234 B
Rust

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;
println!("Number {x}");
}