Description
This assignment is an extension of Assignment#2. You will implement a
program called “call_stats3.cpp” to process customer call records. Each
customer call record contains seven fields, which are as follows: 1) a ten digit
cell phone number (string, no dashes), 2) the number of relay stations used in
making the call (integer), 3) the length of the call in minutes (integer), 4) the net
cost of the call (double), 5) the tax rate (double), 6) the call tax (double) and 7)
the total cost of the call (double). Your program will have 3 functions: Input,
Process and Output. Your main program will call each function until the end of
the datafile has been read. Each call record will be printed to a data file.
Following are the descriptions of the functionality of each function:
1. The void function “Input” will have two parameters: an input file stream
called “in”, and a customer call record called “call_records”. The function
will read the cell_number, relays, and call_length, in minutes, into the a
call record from the data file.
2. The function “Process” will calculate the net cost of a call (net_cost), the
tax on a call (call_tax) and the total cost of the call (total_cost) using the
number of relay stations (relays) and the length in minutes of the call
(call_length) for a call record. Please consider the following:
a. The tax rate on a call (call_tax) is simply based on the number of
relay stations (relays) used to make the call (0<= relays <=5 then
tax_rate= 1%; 6<= relays <=11 then tax_rate = 3%; 12<=
relays<=20 then tax_rate = 5%; 21<= relays <=50 then tax_rate = 8%; relays >50 then tax_rate =12%) .
b. The net cost of a call is calculated by the following
formula: net_cost = ( relays / 50 x 0.40 x call_length).
c. The tax on a call (call_tax) is equal to net_cost x tax_rate ( divide
by 100 if tax_rate has not be converted to a decimal ).
d. The total cost of a call (rounded to the nearest hundredth) is
calculated by the following formula: total_cost = net_cost +
call_tax . All tax and cost calculations should be rounded to the
nearest hundredths.
3. The function “Output” will print every field of a call record to the file
“weekly_call_info.txt”. The fields should be printed in the following
order: 1) cell phone number, 2) number of relay stations, 3) length of the
call in minutes, 4) net cost, 5) tax rate, 6) call tax, 7) total cost of call.
You may implement more functions if you find it necessary. Please start the
assignment ASAP and ask questions to make sure you understand what you
must do. Remember to follow all style rules and to include all necessary
documentation (consistent, indentation, proper variable names, pre/post
condition, program header, function headers, and so forth.)
Finally, your input data file (call_data.txt) should be in the same directory as
your program source file (call_Stats3.cpp).
Input Stream:
In the assignment you will declare one ifstream to bind your input to the file
“call_data.txt” and one ofstream to bind your output to the file
“weekly_call_info.txt “. Whenever a program performs file i/o you must include
the “fstream” library. Add the following statements to your program:
For source file, “call_stats3.cpp”:
Add “#include ” to your # include statements in your
source file.
Add “include to your # include statements in your source
file.
Format of the input data file(input filename is “call_data.txt”): Do not
include column titles
(The order of the columns are as follows: cell phone number, relays, minutes)
9546321555 0 0
5612971340 5 50
3051234567 8 25
7542346622 24 17
3054432762 15 30
9544321011 50 100
8776219988 87 82
9042224556 4 5
7877176590 11 1
5617278899 20 45
9546321555 4 3
5612971340 79 86
3051234567 8 25
7542346622 24 118
3054432762 115 25
9544321011 43 10
8776219988 265 22
9042224556 2 5
7877176590 89 67
5617278899 40 56
Format of Output (output filename is “weekly_call_info.txt”):
(the order of the columns is as follows: cell phone number, relays, minutes, net
cost, tax rate, call tax, total call cost)
9546321555 0 0 0.00 0.01 0.00 0.00
5612971340 5 50 2.00 0.01 0.02 2.02
3051234567 8 25 1.60 0.03 0.05 1.65
7542346622 24 17 3.26 0.08 0.26 3.53
3054432762 15 30 3.60 0.05 0.18 3.78
9544321011 50 100 40.00 0.08 3.20 43.20
8776219988 87 82 57.07 0.12 6.85 63.92
9042224556 4 5 0.16 0.01 0.00 0.16
7877176590 11 1 0.09 0.03 0.00 0.09
5617278899 20 45 7.20 0.05 0.36 7.56
9546321555 4 3 0.10 0.01 0.00 0.10
5612971340 79 86 54.35 0.12 6.52 60.87
3051234567 8 25 1.60 0.03 0.05 1.65
7542346622 24 118 22.66 0.08 1.81 24.47
3054432762 115 25 23.00 0.12 2.76 25.76
9544321011 43 10 3.44 0.08 0.28 3.72
8776219988 265 22 46.64 0.12 5.60 52.24
9042224556 2 5 0.08 0.01 0.00 0.08
7877176590 89 67 47.70 0.12 5.72 53.43
5617278899 40 56 17.92 0.08 1.43 19.35
Handing in your program
Electronically submit the source file “call_stats3.cpp” in the Assignments
area of blackboard before the due date and time. Remember, submit your
programs on time no matter if they are incorrect and/or complete!
