Thread: modifiing pointer in other function

C++ has references for such problems

Code:

#include <iostream>
#include <string>

using namespace std;

void create(string *& x)
{
	cout << "adr x before: " << x << endl; // not initialized
	x= new string("aaa"); 
	cout << "adr x after: " <<  x << endl; 
}

int main()
{
	string *s = 0;          // a pointer to a string ( as in your description )
	cout << "adr s bevore: " << s << endl; // was initialized to 0
	create(s);
	cout << "adr s after: " << s << " = " << *s << endl;
    delete s;   // dont forget about this
	return 0;
}

Kurt
EDIT: too late, but look at it as a variation of vart's solution

No. You have to delete anything that was allocated with new.
Kurt
EDIT: The pointer to the string will be destructed ( that's a nop ) but not the object it points to ( the string ).