Is it possible to change an adress of a variable with pointers in C++

Question

Let's say I have a following program:

int a=7;  // while &a=0x67a9

Is there a way to change adress of a, to for ex. 0xaa55?

No, but it is possible to create the variable at a specified location: [Create new C++ object at specific memory address?](https://stackoverflow.com/questions/1554774/create-new-c-object-at-specific-memory-address) — , Aug 06 '17 at 12:34

score 6 · Accepted Answer · answered Aug 06 '17 at 12:33

No, that's not possible. The addresses of local variables are registers or stack addresses. So these can even change with every call context.

In case you know that your hardware supports to have a value at that specific address, you can use a pointer though:

volatile int* pa = 0x67a9;

and access the value

std::cout << *pa << std::endl;

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