What do we do with C$\_$out in the full adder? I am assuming that leaving it open causes the error: $"$

There are no devices connected to node $"$s$[30]".$

There are no devices connected to node $"$s$[29]".$

There are no devices connected to node $"$s$[28]".$

There are no devices connected to node $"$s$[27]".$

There are no devices connected to node $"$s$[26]".$

There are no devices connected to node $"$s$[25]".$

There are no devices connected to node $"$s$[24]".$

There are no devices connected to node $"$s$[23]".$

There are no devices connected to node $"$s$[22]".$