Assignment 1 - Processing the shopping list
due September 29th
The purpose of this assignment is to review the use of
reading
and
writing text files, writing functions, and formatting output.
Part 1 Detail
Read in the shopping list
file, partially
shown below. This file consists of a heading line and a list of items
and their cost.
The Shopping List File
Shopping List
apple 1.05
banana 0.50
book 139.95
eraser 0.509
flashdrive 9.99
folder 1.00
highlighter 0.98
keyboard 20.15
...
|
You are to process the input data and produce the report file shown
below. The output format must
match exactly
that shown below, except that you are to calculate the total (that is
the sum of the subtotals, between $800 and $899). The the column
widths are 12, 10, 8, and 12.
Output Report File
Item
Cost Tax Subtotal
----------- ------ ----- --------
apple
1.05 0.00
1.05
banana
0.50 0.00
0.50
book
139.95 12.60 152.55
eraser
0.51 0.05
0.55
flashdrive 9.99 0.90 10.89
folder
1.00 0.09
1.09
highlighter 0.98 0.09 1.07
keyboard 20.15 1.81 21.96
...
--------
Total 8??.??
|
The tax rate is 9%, but there is no tax on the banana, the apple, or the water.
Program requirements
- Make sure you check for successful file opens.
- Include at least 3 named constants. Suggestions:
input file name, output file name, and tax rate.
- Include
at least 2
functions besides main(). Suggestions: a function to return
the
tax amount, a function to write the headings.
- Place the function definitions below main() and function prototypes above main().
- You may not modify the input file.