Question

How do I find the size of the pointer datatype on my computer? I know how to get int, double, float, and char. But I have no clue how I would get this

Answer 1

It depends upon different issues like Operating system, CPU architecture etc. Usually it depends upon the word size of underlying processor for example for a 32 bit computer the pointer size can be 4 bytes for a 64 bit computer the pointer size can be 8 bytes. So for a specific architecture pointer size will be fixed.Pointers generally have a fixed size, for ex. on a 32-bit executable they're usually 32-bit. There are some exceptions, like on old 16-bit windows when you had to distinguish between 32-bit pointers and 16-bit.. It's usually pretty safe to assume they're going to be uniform within a given executable on modern desktop OS's.