Use singular for directory names

exercise/idiomatic/src/main.rs

@@ -0,0 +1,22 @@
+// 1. Wow. Just...wow.  Let's start cleaning this up by running `cargo fmt`.
+
+// 2. `cargo fmt` is great, but it doesn't add blank lines where there are none. Go ahead and add
+//    some blank lines in places you think it would make sense.
+
+// 3. Time to clean up! Run `cargo clippy`. Fix up all the warnings so `cargo clippy` is silent.
+
+// Challenge: Clippy doesn't find *everything*. What else would you change to make this code better?
+
+const pi:f32=3.14159265358979323846;
+fn count_to_5()->i32{let mut foo =(0);loop{if{foo>pi as i32}{if(foo > 5){break;}}foo=foo+1;}return 5;}
+fn main() {
+println!("I can count to {}", count_to_5());
+}
+#[cfg(test)]
+mod test {
+use super::*;
+#[test]
+fn test_counting() {
+assert_eq!(count_to_5() == 5, true);
+}
+}