Hi
In C++, are the following considered best practices or not?
- passing aguments to functions (ie functions do not take any arguments
)
- returning values using return statement
Anything else?
The reason for this question is that I had an assignment in which I was
asked to modify so that the main will call all the functions from main
itself and also do not pass any arguments except the first function.
Another issue was a LinkedList. I was not supposed to pass the Head
pointer or add a global variable. The class only had *m_pLink (the
tail pointer). Would it be ok to assign the head pointer to m_pLink
(m_pLink does take current pointer values as it progress throuhgh the
chain, but assigned the top current pointer value)? I did that and the
code works fine.
Thank you
17  3020 
2005 wrote:
Hi
In C++, are the following considered best practices or not?
- passing aguments to functions (ie functions do not take any arguments
)
Huh? Is it good practice to pass arguments to functions that take no
arguments? Is that what you are asking? No, it is not. It won't even
compile. Normally one passes arguments to functions when the functions
need input, or arguments.
- returning values using return statement
How else would you return values?
>
Anything else?
Your post isn't making a lot of sense. Maybe you need to think more
clearly about what you are asking.
>
The reason for this question is that I had an assignment in which I was
asked to modify so that the main will call all the functions from main
itself and also do not pass any arguments except the first function.
Ok.
>
Another issue was a LinkedList. I was not supposed to pass the Head
pointer or add a global variable. The class only had *m_pLink (the
tail pointer). Would it be ok to assign the head pointer to m_pLink
(m_pLink does take current pointer values as it progress throuhgh the
chain, but assigned the top current pointer value)? I did that and the
code works fine.
I have no idea if that follows the guidelines to your assignment. You
would normally keep track of the head in a linked list. If you track
the tail and link back to the head then really you are just reversing
terminology as conceptually your list is still from head to tail.
Noah Roberts wrote:
2005 wrote:
Hi
In C++, are the following considered best practices or not?
- passing aguments to functions (ie functions do not take any arguments
)
Huh? Is it good practice to pass arguments to functions that take no
arguments? Is that what you are asking? No, it is not. It won't even
compile. Normally one passes arguments to functions when the functions
need input, or arguments.
- returning values using return statement
How else would you return values?
Anything else?
Your post isn't making a lot of sense. Maybe you need to think more
clearly about what you are asking.
The reason for this question is that I had an assignment in which I was
asked to modify so that the main will call all the functions from main
itself and also do not pass any arguments except the first function.
Ok.
Another issue was a LinkedList. I was not supposed to pass the Head
pointer or add a global variable. The class only had *m_pLink (the
tail pointer). Would it be ok to assign the head pointer to m_pLink
(m_pLink does take current pointer values as it progress throuhgh the
chain, but assigned the top current pointer value)? I did that and the
code works fine.
I have no idea if that follows the guidelines to your assignment. You
would normally keep track of the head in a linked list. If you track
the tail and link back to the head then really you are just reversing
terminology as conceptually your list is still from head to tail.
Hi
In C++, are the following considered best practices or not?
- passing aguments to functions (ie design functions so that they
better take no arguments)
- returning values using return statement
Anything else?
The reason for this question is that I had an assignment in which I was
asked to modify so that the main will call all the functions from main
itself and also do not pass any arguments except the first function.
Another issue was a LinkedList. I was not supposed to pass the Head
pointer or add a global variable. The class only had *m_pLink (the
tail pointer). Would it be ok to assign the head pointer to m_pLink
(m_pLink does take current pointer values as it progress throuhgh the
chain, but assigned the top current pointer value)? I did that and the
code works fine.
I do Not think that you can get Head if you know the tail?
Thank you
2005 wrote:
Noah Roberts wrote:
>2005 wrote:
>>Hi
In C++, are the following considered best practices or not?
- passing aguments to functions (ie functions do not take any arguments
)
Huh? Is it good practice to pass arguments to functions that take no
arguments? Is that what you are asking? No, it is not. It won't even
compile. Normally one passes arguments to functions when the functions
need input, or arguments.
>>- returning values using return statement
How else would you return values?
>>>
Anything else?
Your post isn't making a lot of sense. Maybe you need to think more
clearly about what you are asking.
>>>
The reason for this question is that I had an assignment in which I was
asked to modify so that the main will call all the functions from main
itself and also do not pass any arguments except the first function.
Ok.
>>>
Another issue was a LinkedList. I was not supposed to pass the Head
pointer or add a global variable. The class only had *m_pLink (the
tail pointer). Would it be ok to assign the head pointer to m_pLink
(m_pLink does take current pointer values as it progress throuhgh the
chain, but assigned the top current pointer value)? I did that and the
code works fine.
I have no idea if that follows the guidelines to your assignment. You
would normally keep track of the head in a linked list. If you track
the tail and link back to the head then really you are just reversing
terminology as conceptually your list is still from head to tail.
[SNIP-repeated-post]
When you are asked to clarify please do so. Reposting your original text
verbatim does not help either you, or the people who would like to help.
--
WW aka Attila
:::
How many ears does Mr. Spock have? Three, a left ear, a right ear, and a
final front ear.
White Wolf wrote:
2005 wrote:
Noah Roberts wrote:
2005 wrote:
Hi
In C++, are the following considered best practices or not?
- passing aguments to functions (ie functions do not take any arguments
)
Huh? Is it good practice to pass arguments to functions that take no
arguments? Is that what you are asking? No, it is not. It won't even
compile. Normally one passes arguments to functions when the functions
need input, or arguments.
- returning values using return statement
How else would you return values?
Anything else?
Your post isn't making a lot of sense. Maybe you need to think more
clearly about what you are asking.
The reason for this question is that I had an assignment in which I was
asked to modify so that the main will call all the functions from main
itself and also do not pass any arguments except the first function.
Ok.
Another issue was a LinkedList. I was not supposed to pass the Head
pointer or add a global variable. The class only had *m_pLink (the
tail pointer). Would it be ok to assign the head pointer to m_pLink
(m_pLink does take current pointer values as it progress throuhgh the
chain, but assigned the top current pointer value)? I did that and the
code works fine.
I have no idea if that follows the guidelines to your assignment. You
would normally keep track of the head in a linked list. If you track
the tail and link back to the head then really you are just reversing
terminology as conceptually your list is still from head to tail.
[SNIP-repeated-post]
When you are asked to clarify please do so. Reposting your original text
verbatim does not help either you, or the people who would like to help.
Sorry, the original post - people didn't understand - so I modified it
& posted.
"2005" <uw*****@yahoo. comwrote in message
news:11******** **************@ e64g2000cwd.goo glegroups.com.. .
>
Noah Roberts wrote:
>2005 wrote:
Hi
In C++, are the following considered best practices or not?
- passing aguments to functions (ie functions do not take any arguments
)
Huh? Is it good practice to pass arguments to functions that take no
arguments? Is that what you are asking? No, it is not. It won't even
compile. Normally one passes arguments to functions when the functions
need input, or arguments.
- returning values using return statement
How else would you return values?
>
Anything else?
Your post isn't making a lot of sense. Maybe you need to think more
clearly about what you are asking.
>
The reason for this question is that I had an assignment in which I was
asked to modify so that the main will call all the functions from main
itself and also do not pass any arguments except the first function.
Ok.
>
Another issue was a LinkedList. I was not supposed to pass the Head
pointer or add a global variable. The class only had *m_pLink (the
tail pointer). Would it be ok to assign the head pointer to m_pLink
(m_pLink does take current pointer values as it progress throuhgh the
chain, but assigned the top current pointer value)? I did that and the
code works fine.
I have no idea if that follows the guidelines to your assignment. You
would normally keep track of the head in a linked list. If you track
the tail and link back to the head then really you are just reversing
terminology as conceptually your list is still from head to tail.
Hi
In C++, are the following considered best practices or not?
- passing aguments to functions (ie design functions so that they
better take no arguments)
A function's purpose will determine whether it's appropriate
to define parameter(s) for it. So 'best practice' is to
use arguments when necessary, and don't when not.
- returning values using return statement
As far as I know, the only way to return a value from
a function is with a return statement.
>
Anything else?
The reason for this question is that I had an assignment in which I was
asked to modify so that the main will call all the functions from main
itself and also do not pass any arguments except the first function.
This could work (or not) depending upon what the program is supposed to do.
Perhaps this is simply a lesson to show you that there's often more than
one way to do something, and perhaps to decide which is 'better'.
>
Another issue was a LinkedList. I was not supposed to pass the Head
pointer
Pass it to what?
>or add a global variable.
Global objects are rarely necessary and best avoided.
>The class only had *m_pLink (the
tail pointer).
Here you say 'm_pLink' represents a tail pointer.
>Would it be ok to assign the head pointer to m_pLink
Then 'm_pLink' would not be a tail pointer anymore (except in
the case of an empty list).
(m_pLink does take current pointer values as it progress throuhgh the
chain,
Now you say 'm_pLink' is a 'current pointer'. WHich is it?
>but assigned the top current pointer value)?
What is a 'top current pointer'?
>I did that and the
code works fine.
What code? Show us.
>
I do Not think that you can get Head if you know the tail?
Whether you traverse a linked list from beginning to end, or
from end to beginning, you'll need some way of telling when
to stop (typically with a 'NULL' pointer value).
-Mike
Mike Wahler wrote:
"2005" <uw*****@yahoo. comwrote in message
news:11******** **************@ e64g2000cwd.goo glegroups.com.. .
Noah Roberts wrote:
2005 wrote:
Hi
In C++, are the following considered best practices or not?
- passing aguments to functions (ie functions do not take any arguments
)
Huh? Is it good practice to pass arguments to functions that take no
arguments? Is that what you are asking? No, it is not. It won't even
compile. Normally one passes arguments to functions when the functions
need input, or arguments.
- returning values using return statement
How else would you return values?
Anything else?
Your post isn't making a lot of sense. Maybe you need to think more
clearly about what you are asking.
The reason for this question is that I had an assignment in which I was
asked to modify so that the main will call all the functions from main
itself and also do not pass any arguments except the first function.
Ok.
Another issue was a LinkedList. I was not supposed to pass the Head
pointer or add a global variable. The class only had *m_pLink (the
tail pointer). Would it be ok to assign the head pointer to m_pLink
(m_pLink does take current pointer values as it progress throuhgh the
chain, but assigned the top current pointer value)? I did that and the
code works fine.
I have no idea if that follows the guidelines to your assignment. You
would normally keep track of the head in a linked list. If you track
the tail and link back to the head then really you are just reversing
terminology as conceptually your list is still from head to tail.
Hi
In C++, are the following considered best practices or not?
- passing aguments to functions (ie design functions so that they
better take no arguments)
A function's purpose will determine whether it's appropriate
to define parameter(s) for it. So 'best practice' is to
use arguments when necessary, and don't when not.
- returning values using return statement
As far as I know, the only way to return a value from
a function is with a return statement.
Anything else?
The reason for this question is that I had an assignment in which I was
asked to modify so that the main will call all the functions from main
itself and also do not pass any arguments except the first function.
This could work (or not) depending upon what the program is supposed to do.
Perhaps this is simply a lesson to show you that there's often more than
one way to do something, and perhaps to decide which is 'better'.
Another issue was a LinkedList. I was not supposed to pass the Head
pointer
Pass it to what?
or add a global variable.
Global objects are rarely necessary and best avoided.
The class only had *m_pLink (the
tail pointer).
Here you say 'm_pLink' represents a tail pointer.
Would it be ok to assign the head pointer to m_pLink
Then 'm_pLink' would not be a tail pointer anymore (except in
the case of an empty list).
(m_pLink does take current pointer values as it progress throuhgh the
chain,
Now you say 'm_pLink' is a 'current pointer'. WHich is it?
but assigned the top current pointer value)?
What is a 'top current pointer'?
I did that and the
code works fine.
What code? Show us.
I do Not think that you can get Head if you know the tail?
Whether you traverse a linked list from beginning to end, or
from end to beginning, you'll need some way of telling when
to stop (typically with a 'NULL' pointer value).
If you only know the m_pLink (ie the tail, NULL pointer or the end),
how can you find/evaluate the Head pointer?
2005 wrote:
If you only know the m_pLink (ie the tail, NULL pointer or the end),
how can you find/evaluate the Head pointer?
You cannot iterate a singly linked list backwards. You also cannot
derive anything about a list if the only information you have about it
is a null pointer. If you consider m_pLink the tail of your list,
which you have decided will be null, which you have decided will
represent the end of your list, you will not be able to acomplish
anything with the m_pLink variable. So, in short, if the only thing
you know about your list is that m_pLink contains a null pointer you
will not be able to find/evaluate the Head pointer.
Mike Wahler <mk******@mkwah ler.netwrote:
As far as I know, the only way to return a value from
a function is with a return statement.
Well, another way is to return a value through an output parameter. Yet
another is to throw an exception as a return value, though this style is
frowned upon. A third that I can think of is to return a value through
a global variable, also frowned upon.
--
Marcus Kwok
Replace 'invalid' with 'net' to reply
Marcus Kwok wrote:
Mike Wahler <mk******@mkwah ler.netwrote:
As far as I know, the only way to return a value from
a function is with a return statement.
Well, another way is to return a value through an output parameter. Yet
another is to throw an exception as a return value, though this style is
frowned upon. A third that I can think of is to return a value through
a global variable, also frowned upon.
None of those qualify as returning a value; they are all side effects.
Throwing an exception is actually completely outside the normal program
flow and doesn't fit in the function concept at all. This thread has been closed and replies have been disabled. Please start a new discussion. Similar topics | |
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