Update src/main.cpp

Reviewed-on: #2
Co-authored-by: John Burton <john.burton@jbmail.com>
Co-committed-by: John Burton <john.burton@jbmail.com>

src/main.cpp

@@ -1,11 +1,15 @@
 #include <iostream>
 
-// Add six
+std::string get_greeting() {
+    return "Hello, world!";
+}
+
+// Add the number of things.
 int add_6(int cx) {
-	return 3 + cx;
+	return 6 + cx;
 }
 
 int main() {
-    std::cout << "Hello, world!" << add_6(5) <<  std::endl;
+    std::cout << "Hello, world!" << add_6(5) <<  get_greeting() << "/n";
     return 0;
 }