4 files changed, 10 insertions, 14 deletions
diff --git a/Help/guide/tutorial/Step2/CMakeLists.txt b/Help/guide/tutorial/Step2/CMakeLists.txt
index 059b89a..7aa59e9 100644
--- a/Help/guide/tutorial/Step2/CMakeLists.txt
+++ b/Help/guide/tutorial/Step2/CMakeLists.txt
@@ -1,19 +1,15 @@
-cmake_minimum_required(VERSION 3.3)
-project(Tutorial)
+cmake_minimum_required(VERSION 3.10)
 
+# set the project name and version
+project(Tutorial VERSION 1.0)
+
+# specify the C++ standard
 set(CMAKE_CXX_STANDARD 11)
 set(CMAKE_CXX_STANDARD_REQUIRED True)
 
-# set the version number
-set(Tutorial_VERSION_MAJOR 1)
-set(Tutorial_VERSION_MINOR 0)
-
 # configure a header file to pass some of the CMake settings
 # to the source code
-configure_file(
-  "${PROJECT_SOURCE_DIR}/TutorialConfig.h.in"
-  "${PROJECT_BINARY_DIR}/TutorialConfig.h"
-  )
+configure_file(TutorialConfig.h.in TutorialConfig.h)
 
 # add the executable
 add_executable(Tutorial tutorial.cxx)
diff --git a/Help/guide/tutorial/Step2/MathFunctions/CMakeLists.txt b/Help/guide/tutorial/Step2/MathFunctions/CMakeLists.txt
deleted file mode 100644
index 8b443a6..0000000
--- a/Help/guide/tutorial/Step2/MathFunctions/CMakeLists.txt
+++ /dev/null
@@ -1 +0,0 @@
-add_library(MathFunctions mysqrt.cxx)
diff --git a/Help/guide/tutorial/Step2/MathFunctions/mysqrt.cxx b/Help/guide/tutorial/Step2/MathFunctions/mysqrt.cxx
index 7d9379e..1e4d97a 100644
--- a/Help/guide/tutorial/Step2/MathFunctions/mysqrt.cxx
+++ b/Help/guide/tutorial/Step2/MathFunctions/mysqrt.cxx
@@ -1,4 +1,3 @@
-#include "MathFunctions.h"
 #include <iostream>
 
 // a hack square root calculation using simple operations
diff --git a/Help/guide/tutorial/Step2/tutorial.cxx b/Help/guide/tutorial/Step2/tutorial.cxx
index f2ab446..53b0810 100644
--- a/Help/guide/tutorial/Step2/tutorial.cxx
+++ b/Help/guide/tutorial/Step2/tutorial.cxx
@@ -15,9 +15,11 @@ int main(int argc, char* argv[])
     return 1;
   }
 
-  double inputValue = std::stod(argv[1]);
+  // convert input to double
+  const double inputValue = std::stod(argv[1]);
 
-  double outputValue = sqrt(inputValue);
+  // calculate square root
+  const double outputValue = sqrt(inputValue);
   std::cout << "The square root of " << inputValue << " is " << outputValue
             << std::endl;
   return 0;