done until quiz1

exercises/quizzes/quiz1.rs

@@ -11,6 +11,18 @@
 // TODO: Write a function that calculates the price of an order of apples given
 // the quantity bought.
 // fn calculate_price_of_apples(???) -> ??? { ??? }
+fn calculate_price_of_apples(apples: i32) -> i32 {
+    let mut cost: i32 = 2;
+
+    if apples > 40 {
+        cost = 1;
+        cost *= apples;
+        cost
+    } else {
+        cost *= apples;
+        cost
+    }
+}
 
 fn main() {
     // You can optionally experiment here.