diff --git a/index.js b/index.js
index e69de29bb..4b5d499f9 100644
--- a/index.js
+++ b/index.js
@@ -0,0 +1,31 @@
+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 lowercase = 'I can\'t hear you!'
+  var uppercase = 'YES INDEED!'
+  var mixedCase = 'I love you, Grandma.'
+if(string.toLowerCase() === mixedCase.toLowerCase()){
+    console.log('I love you, too.')
+    return 'I love you, too.';
+}else if (string.toLowerCase() === string ) {
+    console.log(lowercase);
+    return lowercase;
+  } else if (string.toUpperCase() === string ) {
+    console.log(uppercase);
+  	return uppercase;
+  }
+}