30.29 Programming Project: Modularizing Taxes C++

Program Specifications C++

Write a program to calculate U.S. income tax owed given wages, taxable interest, unemployment compensation, status (dependent, single, or married), and taxes withheld. Dollar amounts are displayed as integers without comma separators. For example, cout << "Deduction: $" << deduction << endl; Note: this program is designed for incremental development. Complete each step and submit for grading before starting the next step. Only a portion of tests pass after each step but confirm progress. Step 1. Within main() input wages, taxable interest, unemployment compensation, status (0=dependent, 1=single, and 2=married), and taxes withheld as integers.

Step 2 (2 pts). Complete the CalcAGI() function and add header comments to the function and prototype. Calculate the adjusted gross income (AGI) that is the sum of wages, interest, and unemployment. Convert any negative values to positive before summing to correct potential input errors. Return the AGI. Note the provided code in main() calls CalcAGI() and outputs the returned value. Submit for grading to confirm two tests pass. Ex: If the input is:

20000 23 500 1 400 

The output is:

AGI: $20523 

Step 3 (2 pts). Complete the GetDeduction() function and add header comments to the function and prototype. Return the deduction amount based on status: (0) dependent = 6000, (1) single = 12000, or (2) married=24000. Return 6000 if the status is anything but 0, 1, or 2. Within main() call GetDeduction() and output the returned value. Submit for grading to confirm four tests pass. Ex: If the input is:

20000 23 500 1 400 

The additional output is:

AGI: $20523 Deduction: $12000 

Step 4 (2 pts). Complete the CalcTaxable() function and add header comments to the function and prototype. Calculate taxable amount (AGI - deduction). Set taxable to zero if calculation results in negative value. Return taxable value. Within main() call CalcTaxable() and output the returned value. Submit for grading to confirm six tests pass. Ex: If the input is:

20000 23 500 1 400 

The additional output is:

AGI: $20523 Deduction: $12000 Taxable income: $8523 

Step 5 (2 pts). Complete the CalcTax() function and add header comments to the function and prototype. Calculate tax amount based on status and taxable income (see tables below). Tax amount should be stored initially as a double, rounded to the nearest whole number using round(), and converted to an integer before returning. Within main() call CalcTax() and output the returned value. Submit for grading to confirm eight tests pass. Ex: If the input is:

50000 0 0 2 5000 

The additional output is:

AGI: $50000 Deduction: $24000 Taxable income: $26000 Federal tax: $2720 

Income	Tax for Dependent or Single Filers
$0 - $10000	10% of the income
$10001 - $40000	$1000 + 12% of the amount over $10000
$40001 - $85000	$4600 + 22% of the amount over $40000
over $85000	$14500 + 24% of the amount over $85000

Income	Tax for Married Filers
$0 - $20000	10% of the income
$20001 - $80000	$2000 + 12% of the amount over $20000
over $80000	$9200 + 22% of the amount over $80000

Step 6 (2 pts). Complete the CalcTaxDue() function and add header comments to the function and prototype. Set withheld parameter to zero if negative to correct potential input error. Calculate and return amount of tax due (tax - withheld). Within main() call CalcTaxDue() and output returned value. Submit for grading to confirm all tests pass. Ex: If the input is:

80000 0 500 2 12000 

The additional output is:

AGI: $80500 Deduction: $24000 Taxable income: $56500 Federal tax: $6380 Tax due: $-5620