size of a datatype without using sizeof

Question

I have a data type, say X, and I want to know its size without declaring a variable or pointer of that type and of course without using sizeof oper

Answer 1

put this to your code

then check the linker output ( map file)

unsigned int  uint_nabil;
unsigned long  ulong_nabil;

you will get something like this ;

uint_nabil 700089a8 00000004
ulong_nabil 700089ac    00000004

4 is the size !!