STL newbie: calling member functions through lists

[austinium]

Hi,

Iam trying to teach myself STL list containers, i haven't been able to figure out how to call a member function for individual objects in a list, I have a list consisting of objects.

heres the code:

#include<iostream>
#include<list>

using namespace std;

class test
{
	int num;
	public:
	test() {}
	test(int a) { num = a; }
	int getnum() { return num;}
};

int main()
{
	list<test> tlist;
	list<test>::iterator titerator;
	tlist.push_back(99);
	int i = *titerator.getnum(); //wont compile
	
	return 0;
}

Vectors are a lot simpler, i just use the index and dot operator I have looked quite a few online tutorials, but haven't found one dealing with a situation like this.

Suppose i remove an element from a vector (say myvec[10]), now would myvec[10] be empty(NULL)??? or do elements shift up to fill in the empty space?

help!