Programming assignment question 2

OBJECTIVES:

Doing this project, students will have the chances to practice with the following concepts; therefore, you should review them when you are working on the project:

• Repetition structures: using for, while, or do..while loop
• Selection structure: using if, if else, or switch statement
• Practice using the array of int, double or string
• Read data from keyboard
• Read data from the file
• Write data to the file
• Using manipulators: setw, fixed, showpoint, or precision, etc. to display data as format
• Using user-defined functions
• How to declare an array and how to initialize or access to array elements

REQUIREMENT:

A store that sales a product that is in either model T224 or model T334.

At the end of each year, the store has the report named Model_T_Sale_yyyy.txt where yyyy is 4 digits of the year, for example, Model_T_Sale_2014.txt or Model_T_Sale_2013.txt, etc. The format of input file should be:

For example: Year 2013 the store has file Model_T_Sale_2013.txt as follows:

{`
Jan	2777	1.99	3223	2.19
Feb	2431	1.99	2612	2.19
Mar	2540	1.99	2729	2.19
Apr	2557	2.19	2892	2.29
May	2515	2.19	2249	2.29
Jun	2639	2.19	3190	2.29
Jul	2610	1.89	2839	2.09
Aug	2595	1.89	2875	2.09
Sep	2456	1.89	2828	2.09
Oct	2454	1.99	2803	2.19
Nov	2707	1.99	3295	2.19
Dec	2893	1.99	3522	2.19
`}

For example: Year 2014 the store has file Model_T_Sale_2014.txt as follows:

{`
Jan	3128	1.59	3421	1.79
Feb	3130	1.59	2822	1.79
Mar	3126	1.59	3210	1.79
Apr	3075	1.69	3143	1.79
May	3250	1.69	2538	1.79
Jun	3133	1.69	3458	1.79
Jul	3211	1.79	3135	1.89
Aug	2958	1.79	3620	1.89
Sep	2823	1.79	3714	1.89
Oct	2989	1.89	3689	1.99
Nov	3088	1.89	4163	1.99
Dec	2906	1.89	4314	1.99 
`}

Where each line has 5 information of month, T224 units sold, T224 unit price, T334 units sold, and T334 unit price.

These files are saved in the storage

This project asks you to provide the pseudo-code and the Java code for the application that processes two tasks:

1. Summary Sale in one year
2. Sale Comparison between two years

The application continue allows users to use the program until they want to exit

Task1

-Asks users to enter 4 digits for the year in yyyy format, then open the input file Model_T_Sale_yyyy.txt.

-When reading the input file for each line:

*split the line into 4 pieces of the information: month, T224_Units, T224_uPrice, T334_Units and T334_uPrice.

*calculate the monthly sold each model by:

month_T224 = T224 units sold * T224 unit price

month_T334 = T334 units sold * T334 unit price

*calculate the sum of money sold in the year each model:

year_T224 = year_T224 + month_T224

year_T334 = year_T334 + month_T334

*display output in the following format on screen and also write to the output file named SaleSummary_yourLastName_yyyy.txt where yyyy is 4 digits of the year

For example: the output of the summary of sale in year 2013 and the output of the summary of sale in year 2014

Task 2

-Asks user to enter 4 digits of the first year and enter 4 digits of the second year to compare

-Open 2 input files, Model_T_Sale_xxxx.txt and Model_T_Sale_yyyy.txt. (You should create these input files by typing the information to notepad and save with the above names)

Two input files should be read parallel line by line

-For each line of each file: split information, calculate the requested values in columns then write on the screen and write to the output file named SaleComparison_yourLastName_ xxxx_and_yyyy.txt as follows:

NOTES:

-split the one line of the input file into 5 information month, T224 units sold, T224 unit price, T334 units sold, T334 unit price.

For example: aLineReadFromFile = “first second third fourth fifth”

#include <sstream>

istringstream iss;

iss.str(aLineReadFromFile);

string first; iss >> first;

string second; iss >> second;

string third; iss >> third;

string fourth; iss >> fourth;

string fifth; iss >> fifth;

-convert a string to int: int number = stoi(astring);

-convert a string to double: double number = stod(astring);

-calculate the monthly sold each model by:

month_T224 = T224 units sold * T224 unit price

month_T334 = T334 units sold * T334 unit price

-calculate the sum of money sold in the year each model:

year_T224 = year_T224 + month_T224

year_T334 = year_T334 + month_T334

HOW TO DO THE PROJECT

-Review how the user-defined function works. Also, how to pass the argument by reference. For example:

{`
void foo (int & x)//x is now a reference
{
x = x+1;
}
int main ()
{
int a = 2;
cout << “a = “ << a << endl; // output a = 2
foo (a); //Call user-defined void function named foo
cout << “a = “ << a << endl; // output a = 3
}
`}

-Review read input from the keyboard by cin to read the year to create the file name

-Review how to open a file with the file name to read and how to close the file. You can read the topic “Open file to read and check if existing” from Learning From Questions page on eCampus

-Review how to open a file with the file name to write and how to close the file. You can read the topic “Open file to write AND to append” from Learning From Questions page on eCampus

-Review read one line of the file by using getline(fileReference, filename)

{`-Use while (!inputFile.eof()) { read and process one line }`}

-Read the topic “Split a string with a delimeter” from the Learning From Question on eCampus to know how to split information from one line that read from the file

-Read the topic “Convert a string of digits into a int number or a float number” on eCampus to know how to convert a string that is splitted from the line to a number to calculate.

-Review how to display the information in columns with setw

-Review how to display a decimal number in 2 decimal digits with:

cout.precision(2);

cout << fixed << showpoint;

-Read the topic “Re-display the menu by using do.. while loop” from Learning From Questions page on eCampus to allow users to continue using your application until they want to exit

Create a project named SU15PROJECT_LastName then add the source file named SU15PROJECT_LastName_ SaleReport.cpp that contains main()

In the main(), do the following:

-Display the menu to allow users to select

1. Summary Sale in one year
2. Sale Comparison between two years

The application should allow store managers to continue using until they want to exit. That means after finishing one task the program should loop back to display the menu again until the users want to exit

-After read selected task:

TASK1: (Summary Sale in one year):

Create a method to do the following

-Asks users to enter 4 digits for the year in yyyy format, then open the input file Model_T_Sale_yyyy.txt to read

-For each line, split the information into 5 data: month, T224_Units, T224_uPrice, T334_Units and T334_uPrice.

-Calculate the following to prepare for output

- the column T224 includes the monthly sale the product T224

T224 SALE = T224 units sold * T224 unit price

-the column T334 includes the monthly sales the product T334

T334 SALE = T334 units sold * T334 unit price

TOTAL is added in columns

Total sale in year: is added total sale of two models

-Display the result in columns as requested (see output for task1 above)

TASK2: (Sale Comparison between two years):

Create a method to do the following:

-Asks user to enter 4 digits of 2 years to compare in the format “xxxx yyyy”

-Open 2 input files, Model_T_Sale_xxxx.txt and Model_T_Sale_yyyy.txt.

-We will read two input file parallel.

For each line of each file, split information into 5 data: month, T224_Units, T224_uPrice, T334_Units and T334_uPrice

*calculate the following to prepare for output:

-Column INCREASE: is calculated by: number of units sold in 2014 – number of units sold in 2013

INCREASE = T224_2014 – T224_2013 (number of units sold in 2014 – number of units sold in 2013)

-Column % INCREASE is calculated by: INCREASE / number of units sold in 2013

%INCREASE = (double) INCREASE / (double) T224_2013 (INCREASE / number of units sold in 2013)

-TOTAL:

In the second and third columns are the sum of number of units sold in 12 months the year

In the fourth column is the different of the total number of T334 units in the year and the total number

of T224 units in the year

In the fifth column is calculated as below:

% INCREASE = total of INCREASE / total of number of T224 units sold in the year (second column)

*The information of the table of SALE T334 COMPARISON is calculated as the same as for T224

*save the month, number of T224 units sold in the first year, number of T224 units sold in the second year, monthly increase and monthly % increase into 5 arrays with the same size

*save the month, number of T224 units sold in the first year, number of T224 units sold in the second year, monthly increase and monthly % increate into 5 arrays with the same size

Create a method to display the information of above arrays on the screen and also write to the file in the requested format (see the output file in the task 2 above)

HOW TO TURN IN PROJECT:

Submit on eCampus the source files:

1. SU15PROJECT_LastName_ SaleReport.cpp
2. SU15PROJECT_LastName.exe
3. One output file Sale_Summary_yyyy.txt (output file for year yyyy of task 1)
4. One output file SaleComparison_xxxx_and_yyyy.txt (output file of task 2)
5. pseudo-code or flowchart of the main() in word document SU15PROJECT_LastName.docx