41 lines
1009 B
Rust
41 lines
1009 B
Rust
// This is a quiz for the following sections:
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// - Variables
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// - Functions
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// - If
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//
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// Mary is buying apples. The price of an apple is calculated as follows:
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// - An apple costs 2 rustbucks.
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// - However, if Mary buys more than 40 apples, the price of each apple in the
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// entire order is reduced to only 1 rustbuck!
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// TODO: Write a function that calculates the price of an order of apples given
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// the quantity bought.
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// fn calculate_price_of_apples(???) -> ??? { ??? }
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fn calculate_price_of_apples(qty: i32) -> i32 {
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let mut price: i32 = 2;
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if qty > 40 {
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price = 1;
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}
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price * qty
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}
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fn main() {
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// You can optionally experiment here.
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}
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// Don't change the tests!
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#[cfg(test)]
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mod tests {
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use super::*;
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#[test]
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fn verify_test() {
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assert_eq!(calculate_price_of_apples(35), 70);
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assert_eq!(calculate_price_of_apples(40), 80);
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assert_eq!(calculate_price_of_apples(41), 41);
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assert_eq!(calculate_price_of_apples(65), 65);
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}
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}
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