Numeric_limits class "not declared error

[Goldwing_Pat]

Hi there,

Brand new to C++ and basic experience in programming in C.
I use Codeblocks with GCC compiler.
I am trying to use the "numeric_limits"class as explained in tutorial but I get an error when compiling.

‘numeric_limits’ was not declared in this scope
expected primary expression before ‘int’

Can somebody point me in a direction where to look?

[POMPOMBALLS]

See this post and my reply in the post:

Ultimate C++ Understanding size_t

This is more a question of curiosity, since these lessons appear to maybe be a little outdated. but what do I do to make this work? it says all my numeric_limits are incomplete. My follow along: [my own copy]