diff --git a/src/main.cpp b/src/main.cpp
index ed782ca..5871fe3 100644
--- a/src/main.cpp
+++ b/src/main.cpp
@@ -1,10 +1,14 @@
 #include <iostream>
+#include <boost/optional/optional.hpp>
 
 using namespace std;
+using namespace boost;
 
 int main()
 {
-  cout << "Hello, World!" << endl;
+  optional<string> opt_string = "Hello, World!"s;
 
-  return 0
+  cout << opt_string.value() << endl;
+
+  return 0;
 }