c++ header file for "Class"

Hello,

which spezifications / header files are necessary to use the Realview compiler for c++?

I use

#include<stdlib.h>
#include<iostream.h>

Class Array
{
  private:
        int val[19];
  public:
        int max = 2;
};

But µVision don't know the word "Class" - is it the wrong spelling or is there a necessary headerfile missing?

best wishes
Tina