My understanding is that sizeof empty class/struct in C++ is defined to never be 0 (every object must be addressable, e.g. in cases like arrays and pointer arithmetic etc. etc.): "no object shall have the same address in memory as any other variable" in C(99) standard however, I am under impression but could be wrong, the sizeof empty struct is undefined (i.e. could be 0): C99: "If the struct-declaration-list contains no named members, the behavior is undefined." anyway -- just my 2 cents. leon. On 4/8/10, ranjith kumar <ranjithproxy@xxxxxxxxx> wrote: > Hi, > > 1) What is the size of an an empty class? On my machine it is showing > 1. What is stored at that 1 byte memory? > 2) will sizeof() function ever return zero? > 3)How constructor/destructor are called when an object is created? > Any hidden virables will be crerated by the compiler inside the class? > 4) Why destructor of derived class is not called when we delete a > baseclass pointer which is pointing to derived class? > > Thansk in advance. >
