Function Pointers

[RadWayne]

I'm trying to make a map of ints and function pointers. I had never heard of function pointers until now and I have a few questions.

Here's what I've got so far:

 #include <map>
#include <iostream>

using namespace std;
void testFunc()
{
	cout<<"It works!\n";
}
int main()
{
	map<int, void (**)()> mymap;//Why are 2 *'s required?
	void (*tt)()=&testFunc;//Why is this required?
	mymap[1]=&tt;

	void (**final)();// why cant this be void (*final)();?

	final=mymap.find(1)->second;
        
       (*final)();
        
	return 0;
}

I mostly don't understand where the double *'s came from and why they are required to compile.

And why is void (*tt)()=&testFunc; required? if it was a map of int* I could just

	int x=5;

	map <int, int*>maptwo;
	maptwo[1]=&x;

Thanks!

[cire]

Why are 2 asterisks required? They aren't.

#include <map>
#include <iostream>

void testFunc()
{
	std::cout<<"It works!\n";
}

int main()
{
	std::map<int, void (*)()> mymap;
	mymap[1]=testFunc ;

	void (*final)() = mymap[1];
   	final();
}

http://ideone.com/jFjKl6

[RadWayne]

Seems I over complicated things and confused myself.

Thanks!