if3 solution

This commit is contained in:
mo8it 2024-05-22 15:54:35 +02:00
parent eafb157d60
commit 73e84f8379
2 changed files with 63 additions and 12 deletions

View file

@ -1,4 +1,5 @@
fn animal_habitat(animal: &str) -> &'static str { fn animal_habitat(animal: &str) -> &str {
// TODO: Fix the compiler error in the statement below.
let identifier = if animal == "crab" { let identifier = if animal == "crab" {
1 1
} else if animal == "gopher" { } else if animal == "gopher" {
@ -9,8 +10,8 @@ fn animal_habitat(animal: &str) -> &'static str {
"Unknown" "Unknown"
}; };
// DO NOT CHANGE THIS STATEMENT BELOW // Don't change the expression below!
let habitat = if identifier == 1 { if identifier == 1 {
"Beach" "Beach"
} else if identifier == 2 { } else if identifier == 2 {
"Burrow" "Burrow"
@ -18,37 +19,35 @@ fn animal_habitat(animal: &str) -> &'static str {
"Desert" "Desert"
} else { } else {
"Unknown" "Unknown"
}; }
habitat
} }
fn main() { fn main() {
// You can optionally experiment here. // You can optionally experiment here.
} }
// No test changes needed. // Don't change the tests!
#[cfg(test)] #[cfg(test)]
mod tests { mod tests {
use super::*; use super::*;
#[test] #[test]
fn gopher_lives_in_burrow() { fn gopher_lives_in_burrow() {
assert_eq!(animal_habitat("gopher"), "Burrow"); assert_eq!(animal_habitat("gopher"), "Burrow")
} }
#[test] #[test]
fn snake_lives_in_desert() { fn snake_lives_in_desert() {
assert_eq!(animal_habitat("snake"), "Desert"); assert_eq!(animal_habitat("snake"), "Desert")
} }
#[test] #[test]
fn crab_lives_on_beach() { fn crab_lives_on_beach() {
assert_eq!(animal_habitat("crab"), "Beach"); assert_eq!(animal_habitat("crab"), "Beach")
} }
#[test] #[test]
fn unknown_animal() { fn unknown_animal() {
assert_eq!(animal_habitat("dinosaur"), "Unknown"); assert_eq!(animal_habitat("dinosaur"), "Unknown")
} }
} }

View file

@ -1 +1,53 @@
// Solutions will be available before the stable release. Thank you for testing the beta version 🥰 fn animal_habitat(animal: &str) -> &str {
let identifier = if animal == "crab" {
1
} else if animal == "gopher" {
2
} else if animal == "snake" {
3
} else {
// Any unused identifier.
4
};
// Instead of such an identifier, you would use an enum in Rust.
// But we didn't get into enums yet.
if identifier == 1 {
"Beach"
} else if identifier == 2 {
"Burrow"
} else if identifier == 3 {
"Desert"
} else {
"Unknown"
}
}
fn main() {
// You can optionally experiment here.
}
#[cfg(test)]
mod tests {
use super::*;
#[test]
fn gopher_lives_in_burrow() {
assert_eq!(animal_habitat("gopher"), "Burrow")
}
#[test]
fn snake_lives_in_desert() {
assert_eq!(animal_habitat("snake"), "Desert")
}
#[test]
fn crab_lives_on_beach() {
assert_eq!(animal_habitat("crab"), "Beach")
}
#[test]
fn unknown_animal() {
assert_eq!(animal_habitat("dinosaur"), "Unknown")
}
}