visual studio - VS Immediate Window for C++ Declarations -

Recently I have found that debugging is possible. This feature is really useful because if I want to experiment with code in that context, then I can create new variables in the new window without modifying the actual code, and then I can explore them in the clock window.

It works great for the C # project, I'm debugging, but now I'm trying to do the same thing for a basic C ++ announcement in a separate project. I break my breakpoint, and I type the following in the following window:

  int myVariable;   
 returns this error:  
  CXX0013: error: missing operator   
 is there a step that I need To work with a C ++ project? You can complete the same functionality by adding new variables to your code window (instead of the instant window)   
 
 
 Make sure you have  device-> option-> debugging-> gt; Edit and Continue - & gt; Enable native editing and continue  checked.  
  int myVariable = 444;   
 Then add your code,  debug-> Apply code changes , and it works. Alternatively  set the next statement  to move the execution point to a different line.