void is also a data type so what is the size of void in bytes

Answer 1

0 bytes. There is no size.
In other cases there will be compilation errors. Void type doesn't store any value, object or memory.
You can't write like this:
Void object;

Answer 2

0 bytes n it won't allocate memory at all

Answer 3

But it is a data type and it's having some properties so to store that how it has to work it will take some memory.

Answer 4

you can verify by sizeof(void);

Answer 5

0 bytes, it won't allocate any memory