Due Friday, March 12, midnight

Submit through the Canvas link

Educational goals of this lab - verify that every student can

• understand loops better
• use an accumulator
• use an if/else
• write a more complex input prompt

INSTRUCTIONS:

Individual Problem #1: Loops and If's

The Widget Factory needs a program to calculate someone's payday when their rate of pay per widget made, the number of days they worked and the number of widgets they made each day are known. If the person made more than 100 widgets total, they get extra pay of 1.5 the widget making rate for the widgets over 100.

Sample Run (multiple days, total not over 100)

Widget Factory 

Enter the employee name: Dan Brown
Enter the rate per widget:  10.50
How many days? 4
Enter the number of widgets made for Day 1: 20
Enter the number of widgets made for Day 2: 22
Enter the number of widgets made for Day 3: 18
Enter the number of widgets made for Day 4: 25

Total widgets made 85
The pay for Dan Brown is $892.50

Sample Run (multiple days, extra pay)

Widget Factory 

Enter the employee name: John Black
Enter the rate per widget:  7.25
How many days? 5
Enter the number of widgets made for Day 1: 30
Enter the number of widgets made for Day 2: 25
Enter the number of widgets made for Day 3: 30
Enter the number of widgets made for Day 4: 25
Enter the number of widgets made for Day 5: 20

Total widgets made 130
Extra widgets pay $326.25
The pay for John Black is $1051.25

Sample Run (zero days worked)

Widget Factory 

Enter the employee name: Ralph Green
Enter the rate per widget:  5
How many days? 0

Total widgets made 0
The pay for Ralph Green is $0.00

Sample Run (0 widgets made)

Widget Factory 

Enter the employee name: Sam Coleman
Enter the rate per widget:  10
How many days? 5
Enter the number of widgets made for Day 1: 0
Enter the number of widgets made for Day 2: 0
Enter the number of widgets made for Day 3: 0
Enter the number of widgets made for Day 4: 0
Enter the number of widgets made for Day 5: 0

Total widgets made 0
The pay for Sam Coleman is $0.00

(18 points) Test cases

• Fill these out before you write the program! As usual, put them in a comment at the bottom of your program file. Use a calculator to figure these. If a case doesn't have Extra Pay, just leave it blank.
  Note: Test case 2 had a typo in the inputs. It has been corrected.

  Case #	Description	Inputs			Expected Outcome
  		Name	Rate	Days worked, widgets per day	Total widgets	Extra pay	Payday
  1.	Multiple days worked, no extra pay	John	10.00	3, 5, 8, 9
  2.	Multiple days worked, extra pay	Tim	10.00	4, 10, 48, 45, 15
  3.	1 day worked, extra pay	Joe	5.00	1, 115
  4.	1 day worked, no extra pay	Sue	9.25	1, 15

(12 points) Design

• Give the 3 P's as usual.
• Document on EVERY control structure (loops and if statements) you use.
• Some other comments as needed

(35 points) Implementation

• Write a program which will ask the user for an employee name (string). Then it asks for the rate they get paid per widget made (float). Then it asks for the number of days they worked (int). Then it asks for each individual day's widgets made (int). After the number of widgets have been entered for each day worked, the program reports the total widgets made and the pay the person gets.
• You will need to use an accumulator for the widgets.
• Use a variable to hold the number 100, which is where the extra pay begins. This makes it easy to change if the limit changes.
• Yes, you can write the input prompt so that it will number the days. The trick is to create one string for the input function's argument, the prompt. The string you need is "Enter the number of widgets made for Day " + str(ctr) + ": ". Remember the + is the concatenation operator when put between two strings. Str is the typecast to change a number variable into a string. You must use this string in the input statement
• Format the output numbers that are floats to 2 places.
• You can combine the .format method with other variables in the same print statement, as in
  print(greeting, "you have {:3f} points".format(points))
  if greeting = "Hi!" and points = 3.9247, the output is
  Hi! you have 3.925 points
• Save the program with the name payday.py. To submit it, use the Canvas link.