about constructor and switch

[Eljay Love-Jensen]

Hi,

The switch C/C++ construct can only take an integer.

It cannot take an object (unless that object is convertible to an 
integer).  Thus, it cannot take a std::string.

It cannot take a float, double, long double.  Or a complex.  Or a pointer.

It can take a char, short, int, long or bool, or any expression which 
evaluates to such.

Some languages, such as Ada, have a more capable switch construct, which 
can handle those other situations that C/C++ cannot.

For those more complicated situations in C/C++, use a if/else if/else 
construct, or use polymorphism (where applicable).

HTH,
--Eljay