double sales, commission;

string inputString;

constint LOWSALES $=1000$;

constint MEDSALES $=5000$;

constint HIGHSALES $=10000$;

constdouble LOWPCT $=0\mathrm{.}05$;

constdouble MEDPCT $=0\mathrm{.}07$;

constint BONUS$1=1000$;

constint BONUS$2=1500$;

Console.WriteLine$("$What was the sales amount? $")$;

inputString $=$ Console.ReadLine$()$;

sales $=$ Convert.ToDouble$($inputString$)$;

commission $=$ sales $*$ LOWPCT;

if$($sales $>$ LOWSALES$)$

commission $+=($sales $-$ LOWSALES$)*$ MEDPCT;

else

if$($sales $>=$ MEDSALES$)$

commission $+=$ BONUS$1$;

else

if$($sales $>$ HIGHSALES$)$

commission $+=$ BONUS$2$;

Console.WriteLine$("$Sales: $\{0\}$

Commission: $\{1\}",$

sales.ToString$("$C$"),$ commission.ToString$("$C$"))$;

The file DebugFour$4.$cs has syntax and$/$or logical errors. Determine the problem$($s$),$ and fix the program.