Re: What's wrong with my code?

  • From: Tyler Littlefield <tyler@xxxxxxxxxxxxx>
  • To: programmingblind@xxxxxxxxxxxxx
  • Date: Tue, 6 Jul 2010 09:58:55 -0600

just use int main(void) then, if you don't have command line arguments? No 
variables defined, then.
                Thanks,
Tyler Littlefield
        http://tds-solutions.net
        Twitter: sorressean

On Jul 6, 2010, at 9:56 AM, Jared Wright wrote:

> I dunno. You're right, there's nothing wrong with it, but I hate seeing code 
> that defines variables for command line arguments when none will ever be 
> applicable. It's like including unnecessary libraries from a readability  
> standpoint if not quite a programatic one. Some make you include them anyway 
> though, like Java.
> 
> On 7/6/2010 11:44 AM, Tyler Littlefield wrote:
>> Eh? The added code? It's not "added," nor is it a problem. It's for 
>> receiving command line arguments.
>>              Thanks,
>> Tyler Littlefield
>>      http://tds-solutions.net
>>      Twitter: sorressean
>> 
>> On Jul 6, 2010, at 9:36 AM, Joseph Lee wrote:
>> 
>>   
>>> Hi,
>>> The added code is done from VS (I remember having that problem and fixed it 
>>> by creating a general CPP project).
>>> Cheers,
>>> Joseph
>>> 
>>> -----Original Message-----
>>> From: programmingblind-bounce@xxxxxxxxxxxxx 
>>> [mailto:programmingblind-bounce@xxxxxxxxxxxxx] On Behalf Of Alex Midence
>>> Sent: Tuesday, July 06, 2010 8:25 AM
>>> To: programmingblind@xxxxxxxxxxxxx
>>> Subject: Re: What's wrong with my code?
>>> 
>>> Hi, all,
>>> 
>>> This looks like something I'm working on too.  I've a question though:
>>> 
>>> Why do books tell you to write:
>>> int main()
>>> 
>>> but, I've seen folks here and on some websites I've  looked at write:
>>> 
>>> Int main  (int argc; char; **) or something like that?
>>> 
>>> Thanks,
>>> Alex M
>>> 
>>> 
>>> On 7/6/10, Dave<davidct1209@xxxxxxxxx>  wrote:
>>>     
>>>> Hi Jes,
>>>> 
>>>> Something helpful that folks do in industry (not so much in academia
>>>> from my experience though) is called a code review where people insert
>>>> specific comments on selected lines of code.  I'll go ahead and do
>>>> that below prefixing my comments with "dave:".  Ken and Joseph had
>>>> some great comments as well.
>>>> 
>>>> //Ch5 Exercise 4, page 287 //Calculates and displays the average of
>>>> three test scores
>>>> dave:  "//" only need one per line.  You only need to put another "//"
>>>> if you start a new line (it doesn't matter how many sentences you have
>>>> in a comment as long as they're still on the same line.)
>>>> 
>>>> //created/revised by Jes Smith on July 5 2010
>>>> 
>>>> 
>>>> #include<iostream>
>>>> using<<std::cout;>>
>>>> using<<std::cin;>>
>>>> using<<std::endl;>>
>>>> dave: "using" has the purpose of restricting namespaces such as "using
>>>> namespace std;".  This has the effect of letting you say
>>>> cout<<  "hello!"
>>>> as opposed to
>>>> std::cout<<  "hello!"
>>>> It's a good topic to read up on in a C++ book.
>>>> 
>>>> //declare variables
>>>> int score_1 (0);
>>>> int score_2 (0);
>>>> int score_3 (0);
>>>> dave:  these are declared with global scope; you may want to consider
>>>> putting them in the main routine below.  Also, simple types like int
>>>> or float can be assigned to (such as int a = 0;).
>>>> 
>>>> //begin program
>>>> int main()
>>>> {
>>>> cout<  "Please enter your first test score. You may enter decimal values:"
>>>>       
>>>>> ;
>>>>>         
>>>> dave:  the "<>" syntax can be tricky here.  the"<<" operator directs
>>>> the string on the right to the stream on the left.  It should be
>>>> written as
>>>> cout<<  "hello!";
>>>> 
>>>> cin<<  score_1>>;
>>>> cin<<score_2>>  ;
>>>> cin<<score_3>>  ;
>>>> dave:  Think of cin as an in-coming stream which you want to direct
>>>> elsewhere.  The "cin" blob is just a user typing stuff and you want to
>>>> direct it to a variable.  To do this, you can write
>>>> cin>>  some_var;
>>>> The cin object only "writes" to the variable when the user presses enter.
>>>> 
>>>> return 0
>>>> }
>>>> 
>>>> 
>>>> 
>>>> Hth!
>>>> Dave
>>>> 
>>>> On 7/5/10, Hrvoje Katić<hrvojekatic@xxxxxxxxx>  wrote:
>>>>       
>>>>> Hi,
>>>>> 
>>>>> Instead of writing
>>>>> using std::bla
>>>>> it's enough to write
>>>>> using namespace std
>>>>> 
>>>>> Hrvoje
>>>>> 
>>>>> On 6.7.2010 5:54, Jes wrote:
>>>>>         
>>>>>> Hi all,
>>>>>> This is a programming assignment I'm trying to do out of the class
>>>>>> text book. Any assistance would be appreciated, as well as any
>>>>>> feedback on how I am doing writing the code. I have this habit of not
>>>>>> writing the code all the way through, and compiling the program bit by
>>>>>> bit to make sure I don't get any errors in the process of coding. I
>>>>>> just want to make sure that the code I have already written is working
>>>>>> as it should before I continue writing. I'm sure this is not a good
>>>>>> habit to get into.
>>>>>> Thanks for any help.
>>>>>> Jes
>>>>>> 
>>>>>> //Ch5 Exercise 4, page 287 //Calculates and displays the average of
>>>>>> three test scores
>>>>>> //created/revised by Jes Smith on July 5 2010
>>>>>> 
>>>>>> #include<iostream>
>>>>>> using<<std::cout;>>
>>>>>> using<<std::cin;>>
>>>>>> using<<std::endl;>>
>>>>>> 
>>>>>> //declare variables
>>>>>> int score_1 (0);
>>>>>> int score_2 (0);
>>>>>> int score_3 (0);
>>>>>> 
>>>>>> //begin program
>>>>>> int main()
>>>>>> {
>>>>>> cout<  "Please enter your first test score. You may enter decimal
>>>>>> values: ">;
>>>>>> cin<<  score_1>>;
>>>>>> cin<<score_2>>  ;
>>>>>> cin<<score_3>>  ;
>>>>>> 
>>>>>> return 0
>>>>>> }
>>>>>> 
>>>>>>           
>>>>> 
>>>>>         
>>>> __________
>>>> View the list's information and change your settings at
>>>> //www.freelists.org/list/programmingblind
>>>> 
>>>> 
>>>>       
>>> __________
>>> View the list's information and change your settings at
>>> //www.freelists.org/list/programmingblind
>>> 
>>> No virus found in this incoming message.
>>> Checked by AVG - www.avg.com
>>> Version: 8.5.439 / Virus Database: 271.1.1/2984 - Release Date: 07/05/10 
>>> 18:36:00
>>> 
>>> __________
>>> View the list's information and change your settings at
>>> //www.freelists.org/list/programmingblind
>>> 
>>>     
>> __________
>> View the list's information and change your settings at
>> //www.freelists.org/list/programmingblind
>> 
>>   
> 
> __________
> View the list's information and change your settings at 
> //www.freelists.org/list/programmingblind
> 

__________
View the list's information and change your settings at
//www.freelists.org/list/programmingblind

Other related posts: