Some weird memory access problem

[csstudent123]

Hello .. When I return mem add I cannot access the data in that add: in bin search tree

Curr=findMin(root);

cout<<"val: "<<Curr->barcode<<endl;//nothing in printed except val:

bst::hwareItem* bst:: findMin(hwareItem*& root){


    while(root!=NULL){

        root=root->left;
        }

    return root;

}

[MiiNiPaa]

Your findMin functions does nothing but sets root to null and returns it. So you are trying to dereference null pointer which is illegal.

[csstudent123]

I changed it to this and it worked

bst::hwareItem* bst:: findMin(hwareItem*& root){


    while(root->left!=NULL){

        root=root->left;
        }

    return root;
}