Calling a function through its address in memory in c / c++

Question

Given knowledge of the prototype of a function and its address in memory, is it possible to call this function from another process or some piece of code that knows nothing

Answer 1

It is definitely possible, but there are restrictions. Each process will have its own block of memory which other processes can't interfere with. Now, you will notice, I wrote it is definitely possible, this is through DLL injection (or code injection).

We can use the typedef keyword to achieve this. Now, I see you've marked the answer as 'Answered' and it seems you've gotten on fine, this is just a notice for anyone else that may be interested.