Pointer to the function

Pointer to the function?

It appears on the page.247. I had never get in touch with this concept before. Let me make some records.

A function pointer is just that -- a pointer that denotes a function rather than an object. a function to pointer points to a particular type. A function's type is determined by its return type and the types of its parameters.

I get an example:

#include <iostream>
using namespace std;

void pp(int a)
{
cout << a << endl;
}

int main()
{
void (*pf)(int); // declaration is necessary
pf = &pp;
pf(5);
return 0;
}


It's a usage of pointer to the function.
the C++ primer don't supply a instance for explaination. Okay, i get some inforations from other website.

http://www.cprogramming.com/tutorial/function-pointers.html