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+// if1.rs
+
+pub fn bigger(a: i32, b:i32) -> i32 {
+    // Complete this function to return the bigger number!
+    // Do not use:
+    // - return
+    // - another function call
+    // - additional variables
+    // Scroll down for hints.
+}
+
+#[cfg(test)]
+mod tests {
+    use super::*;
+
+    #[test]
+    fn ten_is_bigger_than_eight() {
+        assert_eq!(10, bigger(10, 8));
+    }
+
+    #[test]
+    fn fortytwo_is_bigger_than_thirtytwo() {
+        assert_eq!(42, bigger(32, 42));
+    }
+}
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+// It's possible to do this in one line if you would like!
+// Some similar examples from other languages:
+// - In C(++) this would be: `a > b ? a : b`
+// - In Python this would be:  `a if a > b else b`
+// Remember in Rust that:
+// - the `if` condition does not need to be surrounded by parentheses
+// - `if`/`else` conditionals are expressions
+// - Each condition is followed by a `{}` block.