initial commit

exercises/02_basic_calculator/01_integers/src/lib.rs

@@ -0,0 +1,15 @@
+fn compute(a: u32, b: u32) -> u32 {
+    // TODO: change the line below to fix the compiler error and make the tests pass.
+    let multiplier: u8 = 4;
+    a + b * multiplier
+}
+
+#[cfg(test)]
+mod tests {
+    use crate::compute;
+
+    #[test]
+    fn case() {
+        assert_eq!(compute(1, 2), 9);
+    }
+}