Can we assign a value to a given memory location?

Question

I want to assign some value (say 2345) to a memory location(say 0X12AED567). Can this be done?

In other words, how can I implement the following function?

Answer 1

Just treat the memory location as a pointer

int* pMemory =  OX12AED567;
*pMemory = 2345;

Note: This will only work if that memory location is accessible and writable by your program. Writing to an arbitrary memory location like this is inherently dangerous.