Meaning of 'const' last in a function declaration of a class?

Question

What is the meaning of const in declarations like these? The const confuses me.

class foobar
{
  public:
     operator int () const         


        

Answer 1

when you use const in the method signature (like your said: const char* foo() const;) you are telling the compiler that memory pointed to by this can't be changed by this method (which is foo here).