Solved: 06 - Conditionals

modules/02_control_flow/src/conditionals.cpp

@@ -2,21 +2,26 @@
 
 namespace control_flow {
 
-auto classify_score(int score) -> Grade {
-    // TODO: A>=90, B>=80, C>=70, D>=60, else F
-    (void)score;
+auto classify_score(const int score) -> Grade {
+    if (score >= 90) return Grade::A;
+    if (score >= 80) return Grade::B;
+    if (score >= 70) return Grade::C;
+    if (score >= 60) return Grade::D;
     return Grade::F;
 }
 
-auto max_of_three(int a, int b, int c) -> int {
-    (void)a; (void)b; (void)c;
-    return 0;
+auto max_of_three(const int a, const int b, const int c) -> int {
+    if (a >= b) {
+        if (a >= c) return a;
+        if (c > a) return c;
+    }
+    if (b >= c) return b;
+    if (c > b) return c;
+    return -1;
 }
 
-auto sign_of(int value) -> int {
-    // TODO: Return -1, 0, or 1
-    (void)value;
-    return 0;
+auto sign_of(const int value) -> int {
+    return value == 0 ? 0 : value > 0 ? 1 : -1;
 }
 
 }  // namespace control_flow