Java Reference
In-Depth Information
Enter weight in pounds: 146
Enter height in inches: 70
BMI is 20.948603801493316
Normal
line#
weight height weightInKilograms heightInMeters bmi
output
9
146
13
70
19
66.22448602
20
1.778
21
20.9486
25
BMI is
20.95
31
Normal
The constants
KILOGRAMS_PER_POUND
and
METERS_PER_INCH
are defined in lines
15-16. Using constants here makes programs easy to read.
You should test the input that covers all possible cases for BMI to ensure that the program
works for all cases.
test all cases
You can use nested
if
statements to write a program for computing taxes.
Key
Point
The United States federal personal income tax is calculated based on filing status and tax-
able income. There are four filing statuses: single filers, married filing jointly or qualified
widow(er), married filing separately, and head of household. The tax rates vary every year.
Table 3.2 shows the rates for 2009. If you are, say, single with a taxable income of $10,000,
the first $8,350 is taxed at 10% and the other $1,650 is taxed at 15%, so, your total tax is
$1,082.50.
VideoNote
Use multi-way
if-else
statements
T
ABLE
3.2
2009 U.S. Federal Personal Tax Rates
Marginal
Tax Rate
Married Filing Jointly
or Qualifying Widow(er)
Single
Married Filing Separately
Head of Household
10%
$0 - $8,350
$0 - $16,700
$0 - $8,350
$0 - $11,950
15%
$8,351 - $33,950
$16,701 - $67,900
$8,351 - $33,950
$11,951 - $45,500
25%
$33,951 - $82,250
$67,901 - $137,050
$33,951 - $68,525
$45,501 - $117,450
28%
$82,251 - $171,550
$137,051 - $208,850
$68,526 - $104,425
$117,451 - $190,200
33%
$171,551 - $372,950
$208,851 - $372,950
$104,426 - $186,475
$190,201 - $372,950
35%
$372,951
+
$372,951
+
$186,476
+
$372,951
+
You are to write a program to compute personal income tax. Your program should prompt
the user to enter the filing status and taxable income and compute the tax. Enter
0
for single
filers,
1
for married filing jointly or qualified widow(er),
2
for married filing separately, and
3
for head of household.
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