struct cube {
                int matrix[8][3];
                bool buves;
                bool found;
                int depth;
        };
cube data[10];

n = Last_unfolded(data, node);

int TForm1::Last_unfolded(cube data[], int node) {
        Memo1->Lines->Append("Bandymas");
        return 1;

Is headerio:
private:	// User declarations
        int  Last_unfolded(cube, int);