rustlings/exercises/quiz1.rs

41 lines
1.0 KiB
Rust

// quiz1.rs
// This is a quiz for the following sections:
// - Variables
// - Functions
// - If
// Mary is buying apples. The price of an apple is calculated as follows:
// - An apple costs 2 rustbucks.
// - If Mary buys more than 40 apples, each apple only costs 1 rustbuck!
// Write a function that calculates the price of an order of apples given
// the quantity bought. No hints this time!
// Put your function here!
fn calculate_price_of_apples(quantity: i32) -> i32 {
let mut quantity= quantity;
if quantity <= 40 {
quantity = quantity * 2;
}
return quantity;
// if quantity > 40 {
// quantity
// } else {
// quantity * 2
// }
}
// Don't modify this function!
#[test]
fn verify_test() {
let price1 = calculate_price_of_apples(35);
let price2 = calculate_price_of_apples(40);
let price3 = calculate_price_of_apples(41);
let price4 = calculate_price_of_apples(65);
assert_eq!(70, price1);
assert_eq!(80, price2);
assert_eq!(41, price3);
assert_eq!(65, price4);
}