The hierarchy of things in a C++ program

    program -> source file -> declarations -> statements -> expressions

    (only one kind of declaration, for a function, contains statements)


The basic types available in C++

  int - number, no decimal
  string - thing in "quotes"
  float - (old fashioned) 32 bit with decimal
  double - (current) with decimal. 3.14 3.14e17 34e-6 
  bool - true false
  char - single char 'x' for example     'x' + 1 = 'y'


The basic operators, highest priority at the top.

   *   /    
   +   -
   <   <=   >   >=   ==   !=
   
   (there are many more, we will pick up here again on Tuesday)