Reply To: Details about VPTR, Virtual table, Virtual Function Home › Forums › C Programming › Details about VPTR, Virtual table, Virtual Function › Reply To: Details about VPTR, Virtual table, Virtual Function February 15, 2008 at 12:20 am #3322 bharat123Participant Hiin the example 10 of multiple inheritance ,i could’t understand the why the sizeof Derived class is 12 bytes, plz explain why this happening. waiting for ur reply……………