1 #include "derived.h" 2 Foo()3 Foo::Foo() { a = 12345; } Foo2()4 ns::Foo2::Foo2() { a = 23456; } 5 6 Foo foo1; 7 Foo foo2; 8 9 ns::Foo2 foo2_1; 10 ns::Foo2 foo2_2; 11