Simple Question: Pointers as Arguments

[karnavor]

Hello,

If I pass a pointer to an object, as an argument to a function, then if the object pointed to by the pointer is modified by the function, will this modification affect the original object? I originally thought that the answer would be yes, but executing the code below suggests no.

class MyClass
{
public:
	int x, y;

	MyClass(){x = 1, y = 2;};
};

void MyFunction(MyClass* an_object)
{
	an_object = new MyClass();
	an_object->x = 5;
	an_object->y = 6;
};

int main()
{
	MyClass* my_object = new MyClass();

	MyFunction(my_object);

	return 0;
}

Here, the MyFunction() does not change the values of x and y of the object in the main function. The values remain at x = 1 and y = 2.

Why is this? When I pass a pointer to an object to MyFunction(), then a new object is created and is pointed to by this same pointer. Thus, any modifications to this new object should affect the original object. But this is not so!

Thanks