Velocity Reviews > C++ > Cant figure out how to do progrom help please

Cant figure out how to do progrom help please

johny
Guest
Posts: n/a

 04-13-2005
Program details as follows:

Input to the program the exam number and computer arch and programming
results for 10 people. Three arrays - ExamNo[10], Arch[10] and prog[10]
are used to hold these items. The First name and surname of each
student should also be entered, concatenated into one string and output
to an array called wholename[10]

We need to check weather the exam numbers are valid. An exam number
should consist of 7 digits only Include a function in your solution
that will pass in the exam number, determine if the exam number is
valid or not and return an appropriate message. only valid exam numbers
should be stored in the array ExamNo

For each of the students, calulatE display the average mark for the
class. For the Computer Arch results, find out how many students
received below the class average. Find the name of the students with
the highest result in each subject. These students' name are to be
displayed and told that they will receive a special prize for their
outstanding results.

For programming results, calulate and display standard deviation. I
think this is the following steps in order to get it
1. Calculate the average of the programming results

2. Calculate the variance(d) by subtracting each result from the
average

3. Square each of these results to get variance squared.

4. Sum all the variances squared

5. Divide by the number of numbers

6. Get the Square root of the result which is the standard Deviation.

Display the exam number, whole name and both results for all students.

Let me know what ya think.

Reddsci2001
Guest
Posts: n/a

 04-14-2005
What is that you are having trouble with?

On Wed, 13 Apr 2005 14:50:53 -0700, johny wrote:

> Program details as follows:
>
> Input to the program the exam number and computer arch and programming
> results for 10 people. Three arrays - ExamNo[10], Arch[10] and prog[10]
> are used to hold these items. The First name and surname of each
> student should also be entered, concatenated into one string and output
> to an array called wholename[10]
>
> We need to check weather the exam numbers are valid. An exam number
> should consist of 7 digits only Include a function in your solution
> that will pass in the exam number, determine if the exam number is
> valid or not and return an appropriate message. only valid exam numbers
> should be stored in the array ExamNo
>
> For each of the students, calulatE display the average mark for the
> class. For the Computer Arch results, find out how many students
> received below the class average. Find the name of the students with
> the highest result in each subject. These students' name are to be
> displayed and told that they will receive a special prize for their
> outstanding results.
>
> For programming results, calulate and display standard deviation. I
> think this is the following steps in order to get it
> 1. Calculate the average of the programming results
>
> 2. Calculate the variance(d) by subtracting each result from the
> average
>
> 3. Square each of these results to get variance squared.
>
> 4. Sum all the variances squared
>
> 5. Divide by the number of numbers
>
> 6. Get the Square root of the result which is the standard Deviation.
>
> Display the exam number, whole name and both results for all students.
>
> Let me know what ya think.

codigo
Guest
Posts: n/a

 04-14-2005

<snip>

> Let me know what ya think.
>

I think you can do it !

James Aguilar
Guest
Posts: n/a

 04-14-2005
"johny" <(E-Mail Removed)> wrote in message
news:(E-Mail Removed) oups.com...
>
> Let me know what ya think.

Doesn't sound too hard.

Jason
Guest
Posts: n/a

 04-14-2005

johny wrote:
> Program details as follows:
>

<snip!>

> Let me know what ya think.

I think this is an excellent beginner's assignment. I kinda reminds me
of when I was first learning C++...

Once you have it written, if you are stuck then feel free to post your

-Jason

Karl Heinz Buchegger
Guest
Posts: n/a

 04-14-2005
johny wrote:
>
>
> Let me know what ya think.

Divide the assignment into managable parts.

Eg. Can you write a function that checks a *single*
exam number?
If no: Why not? Where is your problem?

If you have that function, you could proceed with
creating the arrays and let the user enter his data
(using the above function to check the input). Continue
with just outputing what the user has entered (to see if the
input functionality works correct).

Got that to work? Fine.

Look at the assignment. What can you do next, now that you have
implememted the above. Average mark. All of the data is available
and calculating the average isn't that hard. So you could proceed
with implementing (and testing) that.

And so on, and so on.
The important point is: Divide the work into pieces and work on
each piece individually. The assignment might look big and complicated,
but it isn't when done this way.

And yes: even professional programmers work this way:
Start simple. Implement parts of the code and test them (that
is especially important: you need to make sure that those parts
work as expected *before* you use them as building blocks for
more complicated parts).

--
Karl Heinz Buchegger
http://www.velocityreviews.com/forums/(E-Mail Removed)