diff --git a/index.js b/index.js
index e69de29bb2d..662eccf9f6d 100644
--- a/index.js
+++ b/index.js
@@ -0,0 +1,35 @@
+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){
+  var uppercase = "HELLO!"
+  uppercase.toUpperCase() === uppercase
+  if(string.toUpperCase() === string){
+    return "YES INDEED!"
+  }
+  var lowercase = "hello!"
+  lowercase.toLowerCase() === lowercase
+  if (string.toLowerCase() === string){
+    return "I can\'t hear you!"
+  }
+
+  var mixedCase = "Hi there!"
+  mixedCase.toUpperCase() === mixedCase
+  mixedCase.toLowerCase() === mixedCase
+  if (string === 'I love you, Grandma.'){
+    return "I love you, too."
+  }
+}