compilation error

[Rahul]

Hi Everyone,

I get the error on the following code,

error C2027: use of undefined type 'B'

class AA
{
public: operator B()
{
B obj;
printf("in B\n");
return obj;
}
};

class B
{
public: operator AA()
{
AA obj;
printf("in AA\n");
return obj;
}
};

int main()
{
AA obj;
B b_obj;
obj = b_obj;
b_obj = obj;
return(0);
}

Thanks in advance!!!