rustlings/exercises/functions/functions4.rs

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// functions4.rs
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// Execute `rustlings hint functions4` or use the `hint` watch subcommand for a hint.
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// This store is having a sale where if the price is an even number, you get
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// 10 Rustbucks off, but if it's an odd number, it's 3 Rustbucks off.
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// (Don't worry about the function bodies themselves, we're only interested
// in the signatures for now. If anything, this is a good way to peek ahead
// to future exercises!)
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fn main() {
let original_price = 51;
println!("Your sale price is {}", sale_price(original_price));
}
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fn sale_price(price: i32) -> i32 {
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if is_even(price) {
price - 10
} else {
price - 3
}
}
fn is_even(num: i32) -> bool {
num % 2 == 0
}