= void CopyStack(StackNodeT * & stack, StackNodeT * other) { StackNodeT * trace; StackNodeT * tmp; StackNodeT * head; stack = nullptr; head = nullptr; trace = other; while (trace != nullptr) { tmp = new StackNodeT; tmp->next = nullptr; tmp->data = trace->data; if (stack nullptr) { stack = tmp; head stack; } else { head->next tmp; stack = tmp; } trace = trace ->next; stack = head; } StackT:: StackT(const StackT & other) { CopyStack (stack, other.stack); size = other.size; }