Can I Allocate a specific memory address using pointers in c++?

Question

Can I Allocate a specitic memory address using pointers in c++ ?

For example: Allocate This memory address 25D4C3FA and put 4 in it.

Answer 1

In Windows, yes.

pseudo-code:

Pointer desiredAddress = 0xD0000000;

//allocate 1 KB at our desired address
Pointer p = VirtualAlloc(desiredAddress, 1024, 
      MEM_COMMIT | MEM_RESERVE,  
      PAGE_READWRITE);