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rustlings-exercises-completed/exercises/functions/functions5.rs

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// functions5.rs
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// Execute `rustlings hint functions5` or use the `hint` watch subcommand for a hint.
fn main() {
let answer = square(3);
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println!("The square of 3 is {}", answer);
}
fn square(num: i32) -> i32 {
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num * num
}