Program Specification
A weather station operator has been recording average daily
temperatures for a number of
years. Each day at 3:00am, 9:00am, 3:00pm and 9:00pm, the temperature
is manually
recoded in a notebook. After taking the 9:00pm reading the average
daily temperature is
calculated by adding four readings and dividing the sum by four. The
average daily
temperature is then also manually recorded in the notebook. On the
last day of each
month the average monthly temperature is calculated and stored in a
computer text file to
a precision of 2 decimal places. Past records show that the average
monthly temperature
has never fallen below 0.00 degrees Celsius, and has never risen above
50.00 degrees
Celsius.
The operator has already made text files that record the average
monthly temperatures for
2001 and 2002. The files have been saved on computer with the file
names data2001.dat
and data2002.dat. The file for 2003 has been started, but is not yet
complete. It is stored
in the file named data2003.dat.
Each data file contains a set of month names and average monthly
temperatures. Each
month name and average monthly temperature is on a separate line. The
data stored in
the file data2002.dat is shown below:
January 35.54
February 28.62
March 22.01
April 21.23
May 15.08
June 18.92
July 13.75
August 21.73
September 24.35
October 28.96
November 29.47
December 32.78
The program starts by displaying a menu as shown below:
MENU
1. Select a year to work with
2. Display data as a table
3. Display data as a vertical histogram
4. Display yearly statistics to date
5. Record data
6. Change data
7. Store the current data
0. Exit the program
Please enter a number (0..7) ==>
When option 1 is chosen the program asks the user to specify the year
to be analysed. If
a data file for that year exists the data from that file is loaded
into the program for
processing. (Depending on your implementation, one or two arrays may
be used for this
purpose.) The program then returns to the menu display. If a file for
that year does not
exist the program should ask the user if a file should be created. If
a file is to be created
then the program should do so and prepare to start recording data for
that year, starting at
month one (January), and then return to the menu display. If the user
does not want to
create a file then the program should just return to the menu display.
If the user was
amending a file then that data should be saved to its file, a new file
is opened and the data
loaded into memory.
When option 2 is chosen the program displays the data from the
currently selected year
file, in a table, 3 columns wide, and with as many rows as required to
display all of the
available temperature data. In the example display format shown below
average monthly
temperatures have been recorded for the first five months of the year.
Table of temperature data for 2003
Quarter 1 37.71 31.70 27.89
Quarter 2 24.50 23.05
After displaying the data, the program returns to the menu display. If
a year has not been
specified, the user should be informed that there is no data to
display before being
returned to the menu display.
Option 3 displays the data as a vertical histogram. The histogram
shows the temperature
for each month as a horizontal line of stars. The length of the line
of stars is proportional
to the temperature, rounded to the nearest whole number. For instance,
if each star
represents one degree Celsius, then a reading of 26.07 degrees is
represented by 26 stars,
whereas a reading of 26.78 degrees is represented by 27 stars. The
average temperature
for each month, starting with month 1 (January) at the top, should be
displayed on
successive lines down the screen. The temperature scale should be
shown at the top and
bottom of the histogram. The abbreviated month name appears at the
left-hand side of
each row (as shown below). After completion of the option the program
returns to the
menu display. If a year has not been specified, the user should be
informed that there is
no data to display before being returned to the menu display.
Histogram of temperature data for 2000
000000000011111111112222222222333333333344444444445
012345678901234567890123456789012345678901234567890
Jan ************************************
Feb ******************************
Mar ***********************
Apr **********************
May ****************
Jun ********************
Jul ***************
Aug ***********************
Sep *************************
Oct ******************************
Nov ******************************
Dec **********************************
000000000011111111112222222222333333333344444444445
012345678901234567890123456789012345678901234567890
Option 4 displays statistics of the data for the specified year. The
highest, lowest and
average temperatures recorded in the specified year are displayed in a
neat format.
Precautions should be taken to guard against the situation where there
is not yet any data
recorded for that year. (You should prevent your program from trying
to divide by zero).
After completion of the option the program returns to the menu
display. If a year has not
been specified, the user should be informed that there is no data to
display before being
returned to the menu display.
Temperature statistics for 2002
Highest monthly average: 35.54
Lowest monthly average: 13.75
Average yearly temperature: 24.37
Option 5 allows the user to enter more monthly average temperatures to
the current data.
Data may be entered for successive months, starting at the month
following the current
latest entry. For example, if data has currently been entered for the
year 2003 up to and
including the data for March, the user may enter data for April, May,
..., December, in
that order. After completion of the option the program returns to the
menu display. If a
year has not been specified (Option 1), the user should be so
informed, before being
returned to the menu display.
Option 6 allows the user to change the average temperature for a
particular month, for
the current year. After completion of the option the program returns
to the menu display.
If a year has not been specified (Option 1), the user should be so
informed, before being
returned to the menu display.
Option 7 will transfer the data currently held in memory into its
appropriate file, and then
return to the menu display. The data remains in memory.
Option 0 saves any temperature data changes to file and then exits the
program.
Assessment Criteria
Criteria Marks
Program Executes correctly 3.0
Programming style – indentation, comments 1.0
Properly constructed multi- file project 2.0
Option implementation:
Select Year 2.0
Display Data 1.0
Display Histogram 1.0
Display Statistics 1.0
Enter data 1.0
Alter data 1.0
Save data 1.0
Report Question 1.0
Penalties:
Late penalties. As per Faculty policy at 5% per day.
Plagiarism/Cheating Penalties.
********************************************************************************
I need help with the arrays, max 2d arrays |
Clarification of Question by
maulik1710-ga
on
27 Aug 2003 22:33 PDT
Program Specification
A weather station operator has been recording average daily
temperatures for a number of
years. Each day at 3:00am, 9:00am, 3:00pm and 9:00pm, the temperature
is manually
recoded in a notebook. After taking the 9:00pm reading the average
daily temperature is
calculated by adding four readings and dividing the sum by four. The
average daily
temperature is then also manually recorded in the notebook. On the
last day of each
month the average monthly temperature is calculated and stored in a
computer text file to
a precision of 2 decimal places. Past records show that the average
monthly temperature
has never fallen below 0.00 degrees Celsius, and has never risen above
50.00 degrees
Celsius.
The operator has already made text files that record the average
monthly temperatures for
2001 and 2002. The files have been saved on computer with the file
names data2001.dat
and data2002.dat. The file for 2003 has been started, but is not yet
complete. It is stored
in the file named data2003.dat.
Each data file contains a set of month names and average monthly
temperatures. Each
month name and average monthly temperature is on a separate line. The
data stored in
the file data2002.dat is shown below:
January 35.54
February 28.62
March 22.01
April 21.23
May 15.08
June 18.92
July 13.75
August 21.73
September 24.35
October 28.96
November 29.47
December 32.78
The program starts by displaying a menu as shown below:
MENU
1. Select a year to work with
2. Display data as a table
3. Display data as a vertical histogram
4. Display yearly statistics to date
5. Record data
6. Change data
7. Store the current data
0. Exit the program
Please enter a number (0..7) ==>
When option 1 is chosen the program asks the user to specify the year
to be analysed. If
a data file for that year exists the data from that file is loaded
into the program for
processing. (Depending on your implementation, one or two arrays may
be used for this
purpose.) The program then returns to the menu display. If a file for
that year does not
exist the program should ask the user if a file should be created. If
a file is to be created
then the program should do so and prepare to start recording data for
that year, starting at
month one (January), and then return to the menu display. If the user
does not want to
create a file then the program should just return to the menu display.
If the user was
amending a file then that data should be saved to its file, a new file
is opened and the data
loaded into memory.
When option 2 is chosen the program displays the data from the
currently selected year
file, in a table, 3 columns wide, and with as many rows as required to
display all of the
available temperature data. In the example display format shown below
average monthly
temperatures have been recorded for the first five months of the year.
Table of temperature data for 2003
Quarter 1 37.71 31.70 27.89
Quarter 2 24.50 23.05
After displaying the data, the program returns to the menu display. If
a year has not been
specified, the user should be informed that there is no data to
display before being
returned to the menu display.
Option 3 displays the data as a vertical histogram. The histogram
shows the temperature
for each month as a horizontal line of stars. The length of the line
of stars is proportional
to the temperature, rounded to the nearest whole number. For instance,
if each star
represents one degree Celsius, then a reading of 26.07 degrees is
represented by 26 stars,
whereas a reading of 26.78 degrees is represented by 27 stars. The
average temperature
for each month, starting with month 1 (January) at the top, should be
displayed on
successive lines down the screen. The temperature scale should be
shown at the top and
bottom of the histogram. The abbreviated month name appears at the
left-hand side of
each row (as shown below). After completion of the option the program
returns to the
menu display. If a year has not been specified, the user should be
informed that there is
no data to display before being returned to the menu display.
Histogram of temperature data for 2000
000000000011111111112222222222333333333344444444445
012345678901234567890123456789012345678901234567890
Jan ************************************
Feb ******************************
Mar ***********************
Apr **********************
May ****************
Jun ********************
Jul ***************
Aug ***********************
Sep *************************
Oct ******************************
Nov ******************************
Dec **********************************
000000000011111111112222222222333333333344444444445
012345678901234567890123456789012345678901234567890
Option 4 displays statistics of the data for the specified year. The
highest, lowest and
average temperatures recorded in the specified year are displayed in a
neat format.
Precautions should be taken to guard against the situation where there
is not yet any data
recorded for that year. (You should prevent your program from trying
to divide by zero).
After completion of the option the program returns to the menu
display. If a year has not
been specified, the user should be informed that there is no data to
display before being
returned to the menu display.
Temperature statistics for 2002
Highest monthly average: 35.54
Lowest monthly average: 13.75
Average yearly temperature: 24.37
Option 5 allows the user to enter more monthly average temperatures to
the current data.
Data may be entered for successive months, starting at the month
following the current
latest entry. For example, if data has currently been entered for the
year 2003 up to and
including the data for March, the user may enter data for April, May,
..., December, in
that order. After completion of the option the program returns to the
menu display. If a
year has not been specified (Option 1), the user should be so
informed, before being
returned to the menu display.
Option 6 allows the user to change the average temperature for a
particular month, for
the current year. After completion of the option the program returns
to the menu display.
If a year has not been specified (Option 1), the user should be so
informed, before being
returned to the menu display.
Option 7 will transfer the data currently held in memory into its
appropriate file, and then
return to the menu display. The data remains in memory.
Option 0 saves any temperature data changes to file and then exits the
program.
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