diff --git a/index.js b/index.js
index e69de29bb2..e8962e28f9 100644
--- a/index.js
+++ b/index.js
@@ -0,0 +1,25 @@
+function shout (string) {
+  return string.toUpperCase();
+}
+
+function whisper (string) {
+  return string.toLowerCase();
+}
+
+function logShout (string) {
+  console.log(string.toUpperCase());
+}
+
+function logWhisper (string) { 
+  console.log(string.toLowerCase());
+}
+
+function sayHiToGrandma (string) {
+  if (string === string.toLowerCase()) {
+    return "I can't hear you!";
+  } else if (string === string.toUpperCase()) {
+    return "YES INDEED!";
+  } else if (string === "I love you, Grandma."){ 
+    return "I love you, too.";
+  }
+}
\ No newline at end of file