I am an older coder and haven't touched C++ in years.  Now, I'm jumping back in and honing my skills.  I love the IDE so far.  I thought I would ask a question about functionality.  (Forgive me if this seems like a noob question dripping with ignorance)
I HOPE this is the place to ask this question and that the question gods don't freak out..... just let me know if this is inappropriate or needs to be in a different place and I will look elsewhere for help....
My question is this==> I noticed when I try to use INT_MAX that I get errors 
that it is obviously not declared.  Is this defined in a 3rd party's plug-in and won't work until I install the appropriate plug in?  Or is this a namespace issue?
Also, the IDE doesn't recognize 'auto' types..... again is this a plug in issue or how I have the compiler set up??
Ideas? 
Xanadu