pointers as default arguments

can anyone telll me how to assign a pointer as a default argument for a c++ function. I tried but clouldn't do anything much useful.Please help.

It's just like any other function defaulting. Here is some code illustrating it.

Code:

#include <iostream>

using namespace std;

void f(int* g = 0) {
	if (g != 0) std::cout << *g << std::endl;
}

int main() {
	int a=5;
	int* pA=&a;

	f();
	f(pA);
	f(&a);

	return 0;
}

Perhaps you should post code that isn't working for you?

You don't need the std:: if you #include namespace std;

Yeah, I know.. I just usually don't do the using namespace std thing .