Returning const reference to local variable from a function

Question

I have some questions on returning a reference to a local variable from a function:

class A {
public:
    A(int xx)
    : x(xx)
    {
        printf(\"A::A()         


        

Answer 1

If you will compile this on VC6 you will get this warning

******Compiler Warning (level 1) C4172 returning address of local variable or temporary A function returns the address of a local variable or temporary object. Local variables and temporary objects are destroyed when a function returns, so the address returned is not valid.******

While testing for this problem i found interesting thing (given code is working in VC6):

 class MyClass
{
 public:
 MyClass()
 {
  objID=++cntr;
 }
MyClass& myFunc()
{
    MyClass obj;
    return obj;
}
 int objID;
 static int cntr;
};

int MyClass::cntr;

main()
{
 MyClass tseadf;
 cout<<(tseadf.myFunc()).objID<