If in a galvanic cell,the hydrogen half-cell is the anode on the left side,what is the sign of the standard potential of such a galvanic cell? Give an example.

(N/A) In a galvanic cell,if the hydrogen half-cell $(Pt, H_{2(g)} | H^{+}_{(aq)})$ is placed on the anode (left side),its oxidation potential is $0.00 \ V$.
Since $E_{cell}^{\circ} = E_{cathode}^{\circ} - E_{anode}^{\circ}$ and $E_{anode}^{\circ} = 0 \ V$,then $E_{cell}^{\circ} = E_{cathode}^{\circ}$.
If the cathode has a positive standard reduction potential (like $Cu^{2+}/Cu$ where $E^{\circ} = +0.34 \ V$),the cell potential will be positive.
For the cell: $Pt, H_{2(g)} | H^{+}(1 \ M) || Cu^{2+}(1 \ M) | Cu_{(s)}$,the standard cell potential is $E_{cell}^{\circ} = +0.34 \ V - 0.00 \ V = +0.34 \ V$.