Re: Derived Inner Class ...

Hi,

Is creating an inner class Inner (inside another enclosing class, that
is - e.g. SomeClass), which is itself a sub-class of another class
Base, valid in ISO C++? Here is some code that works in Visual C++
2010 Express:

------------------------------------------------------------------------------------------------------------------------------
#include<iostream>

struct SomeBase
{
SomeBase(int someInt) : someInt_(someInt) {}
int someInt_;
};

struct SomeClass
{
SomeClass(int someInt) : someInt_(someInt) {}
//YOU CAN CREATE AN INNER CLASS WHICH IS ITSELF A SUBCLASS OF ANOTHER
CLASS - IS THIS ISO C++? SUPPORTED BY GCC?
struct SomeInner : public SomeBase
{
SomeInner(int someInt) : SomeBase(someInt) {}
void printSomeInt() {std::cout<< this->someInt_<< std::endl ;}
};
int someInt_;
};

struct SomeClass2
{
struct SomeInner2;
SomeClass2(int someInt) : someInt_(someInt) {}
int someInt_;
};

struct SomeClass2::SomeInner2 : SomeBase
{
SomeInner2(int someInt) : SomeBase(someInt){}
void someOtherFunction() {std::cout<< "hello world"; }
};

int main (int argc, char **argv)
{
SomeClass sc(9211);
SomeClass::SomeInner si(4209211);
si.printSomeInt();
SomeClass2::SomeInner2 si2(9211);
si2.someOtherFunction();
return 0;
}

------------------------------------------------------------------------------------------------------------------------------

This compiles/runs ok on gcc 4.6.0 as well. Is this valid C++?