C++ programmers please answer this question?

I am writeing a very drifficult mathmatical program and I extremlly


need to make a tree of opraters.


I've made a structure like this:


struct tree_struct{


struct tree_struct *left;


char node;


struct tree_struct *right;


};


I need to make an array of this new type,and use it as a stack.so


I did so:


struct tree_struct *stack[4];


and by using 'new'(or malloc in c) I got memory for this pointer.


my problem is in this assignment :


tree-%26gt;left= stack[1];


why this assignment is not true ?I don't know?!!


please help me.


thanks for spending your time to answer my question.

C++ programmers please answer this question?
You have an allocation problem...


is you stack[1] previously allocated like: stack[1]=new struct tree_struct;?


if so than tree-%26gt;left=stack[1] should be valid (but be carefull to previous allocate the "tree" var...).if tree is NULL the tree-%26gt;left is ilegal...
Reply:I have a few questions to ask before i can answer ur question:


1) How exactly are u allocating the nodes of the tree.. plz show me the intended statement


2) Is the array storing the mem of the new nodes?


3) if u intend to do tree_struct-%26gt;left=stack[1] u atleast need to use a handle to access the member... i really dont understand what u're doing there. Perhaps a completed code segment would help.
Reply:wat is your exact problem ???





i cant get you ...





the stack starts with 0 or 1 ????????????