Reference no: EM132356839

Programming Assignment  - Conditionals

Problem 1

Write a function called max4 that expects four arguments, all numbers, and returns the maximum of the four values. Note: you may not use the built-in min or max functions here -- you must provide your own logic for this function. Here are some examples of how your function should work:

>>> max4(1, 2, 3, 4)

4

>>> max4(4.0, 3.9, -1.7, 2)

4.0

>>> max4(-2, -1, -30, -27.2)

-1

>>> max4(7, 7, 7, 7)

7

Problem 2

Write a function called grade that expects one argument, a number representing a score between 0 and 100, and returns a single character as the corresponding letter grade shown in the following table:

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Assume the argument passed to the function is a valid argument; do not validate the argument. Here are some examples of how your function should work:

>>> grade(100) 'A'

>>> grade(0) 'F'

>>> grade(80) 'B'

>>> grade(79.99) 'C'

>>> grade(70) 'C'

>>> grade(65) 'D'

Problem 3

The following rhyme helps us remember how many days there are in any given month: Thirty days has September,

April, June, and November, All the rest have thirty-one,

Except February which has twenty-eight.

More accurate versions of the rhyme deal with the problem posed by the leap year, but let's ignore that for now. Write a function called days which expects one argument, the name of a month as a string, and returns the number of days in that month as given in the rhyme. Assume the argument passed to the function is a valid argument; do not validate the argument. Here are some examples of how your function should work:

>>> days("January") 31

>>> days("February") 28

>>> days("March") 31

>>> days("April") 30

>>>

Problem 4

As you learned from Programming Assignment 2, body mass index is often used in discussions between patients and health professionals about weight-related risk factors. (It should be noted that many health professionals believe that the body mass index isn't all that useful and the labels associated with the numbers are even less useful.)

Using the functions you wrote for Problems 2, 3, and 4 in Programming Assignment 2, now write a new function called bodyMassIndex that expects no parameters, asks the user for information needed to compute a subject's body mass index, then displays the body mass index along with the BMI category obtained from the table below:

Assume the values entered by the user are valid; do not validate the user input. Here are some examples of how your function should work:

>>> bodyMassIndex()

Please enter the subject's name: Eddie

Please enter the subject's height in inches: 70.5 Please enter the subject's weight in pounds: 220 Eddie has a body mass index of: 31.12020146881197 Eddie is obese

>>> bodyMassIndex()

Please enter the subject's name: Albert

Please enter the subject's height in inches: 68 Please enter the subject's weight in pounds: 150 Albert has a body mass index of: 22.80716931676078 Albert is normal weight

When we call your bodyMassIndex function and give the same keyboard input as in the examples above, everything printed by your function should be identical to what you see in the examples above.

Problem 5

Write a function called weekly_pay that expects two arguments, an employee's hourly wage and the number of hours the employee has worked in a week, computes the amount of money to be paid out to the employee for the week, and returns that value as a floating point number. Note that any overtime work (over 40 hours per week) is paid at 150 percent of the regular hourly wage. Assume the arguments passed to the function are valid arguments; do not validate the arguments. Here are some examples of how your function should work:

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>>> weekly_pay(10, 40)

400.0

>>> weekly_pay(7.50, 20.5)

153.75

>>> weekly_pay(10, 50)

550.0

>>> weekly_pay(20, 41)

830.0

Problem 6

The following table contains a simplified explanation of how federal income tax is computed in the United States (the numbers are from a previous decade). Different tax rates are applied based on the taxpayer's marital status and total income.

Write a function named taxes that computes a taxpayer's income tax. The function expects two arguments. The first argument is either "s" for a single taxpayer or "m" for a married taxpayer. The second argument is a number representing the taxpayer's taxable income. Your function should use the information in the table above to computer the taxes due. Assume the arguments passed to the function are valid arguments; do not validate the arguments. Here are some examples of how your function should work:

1470.0500000000002

>>> taxes("m", 172535.38)

33533.845