Changing the address of a New struct in a loop?!

[superhero]

Hi guys,
i'm writing a simple code which is about polynomials using link lists in C#. the problem i have is that whenever it creates a new struct (node) in the for loop it gives it the same address as the previous node was given. so how do i fix it ? here is my struct :

struct poly { public int coef; public int pow; public poly* link;} ;

and here is the where the problem occurs:


for (; i < this.textBox1.T ext.Length; i++)
{
q = new poly();
......
p->link = &q;
}
//&q remains unchanged!
//p.s. the class is unsafe too
//edit, its C# but i have to make it look like C so i'm not allowed to use linked lists

[GaryTexmo]

I've been curious about unsafe code in C# so I did a bit of googling around and found this page...

http://forums.asp.net/t/375039.aspx

It looks like you're creating the poly incorrectly. Instead of...

poly q = new poly();
p->link = &q;

... you want ...

IntPtr newP = Marshal.AllocHGlobal(sizeof(poly));
poly* q = (poly*)newP.ToPointer();
p->link = q;

In the future, give google a try first before posting a question. I realize sometimes google doesn't help if you're not sure what you're looking for but in this case, "C# unsafe linked list" turned up the above link fairly easily. With stuff like this, chances are someone has done it before so a quick google can save you a lot of time :)

[superhero]

THX a bunch dude :) . you made my day. actually i did thousands of searches except the one u did :D . i was searching about polynomials so yeah...
so previously "q" was'nt a pointer but now with what you said i made it a otherwise i had work it out with "fixed (){} " >.>
thx again