diff --git a/index.js b/index.js
index e69de29bb..2d36ca1d0 100644
--- a/index.js
+++ b/index.js
@@ -0,0 +1,29 @@
+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!"
+  }
+
+  if (string == string.toUpperCase()) {
+    return "YES INDEED!"
+  }
+
+  if (string == "I love you, Grandma.") {
+    return "I love you, too."
+  }
+}