diff --git a/CMakeLists.txt b/CMakeLists.txt
index 8b0e089..231fe6b 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -5,6 +5,8 @@ include_directories(.)
 add_executable(
         ${PROJECT_NAME}
         main.cpp
+	helloWorld.hpp
+        helloWorld.cpp
         beer.hpp
         beer.cpp
 )
diff --git a/bootstrap.sh b/bootstrap.sh
index 0a9bea1..0db1feb 100755
--- a/bootstrap.sh
+++ b/bootstrap.sh
@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/usr/bin/env bash
 set -euo pipefail
 IFS=$'\n\t'
 
@@ -16,11 +16,11 @@ if [[ Darwin = "$platform" ]]; then
     -fdiagnostics-fixit-info -fdiagnostics-parseable-fixits \
     -fdiagnostics-print-source-range-info -fdiagnostics-show-option \
     -fno-builtin -fshow-column -fshow-source-location -fstandalone-debug \
-    -ftime-report main.cpp beer.cpp -o "HQ9+"
+    -ftime-report main.cpp helloWorld.cpp beer.cpp -o "HQ9+"
 
 elif [[ "Linux" = "$platform" ]]; then
   g++ --verbose -Wall -Wextra -pedantic -save-temps -v -fgnu-tm -lm -latomic \
-    -lstdc++ -g -fgnat-encodings=all main.cpp beer.cpp -o "HQ9+"
+    -lstdc++ -g -fgnat-encodings=all main.cpp helloWorld.cpp beer.cpp -o "HQ9+"
 
 fi
 
diff --git a/helloWorld.cpp b/helloWorld.cpp
new file mode 100644
index 0000000..3832908
--- /dev/null
+++ b/helloWorld.cpp
@@ -0,0 +1,6 @@
+#include "helloWorld.hpp"
+#include <iostream>
+
+void helloWorld() {
+    std::cout << "Hello, world!" << std::endl;
+}
diff --git a/helloWorld.hpp b/helloWorld.hpp
new file mode 100644
index 0000000..f9ced47
--- /dev/null
+++ b/helloWorld.hpp
@@ -0,0 +1,6 @@
+#ifndef HELLO_WORLD_HPP_
+#define HELLO_WORLD_HPP_
+
+void helloWorld();
+
+#endif // HELLO_WORLD_HPP_
diff --git a/main.cpp b/main.cpp
index e146fa2..d26e0e0 100644
--- a/main.cpp
+++ b/main.cpp
@@ -3,6 +3,7 @@
 #include <iostream>
 #include <string>
 
+#include "helloWorld.hpp"
 #include "beer.hpp"
 #define BUFFER_SIZE INT_MAX / UCHAR_MAX - USHRT_MAX
 
@@ -21,7 +22,7 @@ int main() {
         for (unsigned long long index = 0; index < strnlen(input, BUFFER_SIZE);
              index++) {
             if (input[index] == 'H') {
-                printf("Hello, world!\n");
+                helloWorld();
             } else if (input[index] == 'Q') {
                 printf("%s\n", input);
             } else if (input[index] == '9') {