You are required to complete the tasks described below.

Test program

The following program has been implemented for a newly proposed tax calculation formula for residents of a fictitious country.

$//$ incomeList$[]$: the array recording the individual income items

$//$ childList$[]$: the array recording the ages of children supported by this person

$//$ parentList$[]$: the array recording the ages of parents supported by this person

$1$ public double computeTax$($double$[]$ incomeList, int$[]$ parentList, int$[]$ childList$)\{$

$2$ double taxAmount $=0\mathrm{.}0$;

$3$ double incomeAmount $=0\mathrm{.}0$;

$//$ calculate the income amount

$4$ for $($int i $=0$; i $<$ incomeList.length; i$++)\{$

$5$ incomeAmount $=$ incomeAmount $+$ incomeList$[$i$]$; $6\}$

$//$ calculate the basic tax

$7$ if $($incomeAmount $<=40000)\{$

$8$ taxAmount $=$ incomeAmount $*0\mathrm{.}02$;

$9\}$ else if $($incomeAmount $>40000$ && incomeAmount $<=80000)\{$

$10$ taxAmount $=800+$ incomeAmount $*0\mathrm{.}07$;

$11\}$ else if $($incomeAmount $>80000$ && incomeAmount $<=120000)\{$

$12$ taxAmount $=800+2800+$ incomeAmount $*0\mathrm{.}12$;

$13\}$ else if $($incomeAmount $>120000)\{$

$14$ taxAmount $=800+2800+4800+$ incomeAmount $*0\mathrm{.}17$; $15\}$

$//$ calculate the tax exemption from having children

$16$ int taxExemption $=0$;

$17$ int numOfChild $=$ childList.length;

$18$ while $($numOfChild $>0)\{$

$19$ if $($childList$[$numOfChild $-1]<18)\{$

$20$ taxAmount $=$ taxAmount $-4000$;

$21$ taxExemption $=$ taxExemption $+4000$; $22\}$

$23$ numOfChild$--$; $24\}$

$/$ calculate the tax exemption from having parents

$25$ for $($int j $=0$; j $<$ parentList.length; j$++)\{$

$26$ if $($parentList$[$j$]>60)\{$

$27$ taxAmount $=$ taxAmount $-2000$;

$28$ taxExemption $=$ taxExemption $+2000$; $29\}$

$30\}$

$//$ the maximum tax exemption is $8000$ each person

$31$ if $($taxExemption $<=8000)\{$

$32$ if $($taxAmount $>=0)\{$

$33$ return taxAmount;

$34\}$ else $\{//$ i$.$e$.,$ taxAmount $<0$

$35$ return $0$; $36\}$

$37\}$ else $\{//$ i$.$e$.,$ taxExemption $>8000$

$38$ taxAmount $=$ taxAmount $+($taxExemption $-8000)$;

$39$

$40$ return taxAmount; $40\}$

$41\}$

Your Tasks

$(1)$ Draw the control flow graph for this program.