Function pointers

[DGvMDjzh]

Ive been recently experimenting with function pointers and I got into a problem.

This is a basic function pointer:

void (*pFunc)(int,float) = &Func;

Which works fine, but how do you point to a function if you only have the address?


This obviously wouldn't work:

void (*pFunc)(int,float) = 0xFFFFFF;

Common sense tells me to try this, but it still fails:

void (*pFunc)(int,float) = NULL;
pFunc = *(pFunc*)0xFFFFFF;

So what's the correct way to approach this issue?

[viliml]

void (*pFunc)(int,float) = NULL;
pFunc = *(decltype(pFunc))0xFFFFFF;

pFunc is a variable, you can't use it as a type!

Common sense tells me to try this

Your common sense is either broken, or doesn't know C++.

[Peter87]

This will compile.
pFunc = reinterpret_cast<void(*)(int,float)>(0xFFFFFF);

I hope you know what you are doing.

[DGvMDjzh]

Thank you for your help. Both solutions work, although peter's is slightly better because I'm not using C++11