A common shorthand way to represent a voltaic cell is
anode | anode solution || cathode solution | cathode
A double vertical line represents a salt bridge or a porous barrier. A single vertical line represents a change in phase, such as from solid to solution.
Using the notation just described, represent a cell based on the following reaction:
ClO3- (aq) + 3Cu(s) + 6H+ (aq) → Cl- (aq) + 3Cu2 + (aq) + 3H2 O(l)
Pt is used as an inert electrode in contact with the ClO3- and Cl-.