Re: What's wrong with my code?
- From: Tyler Littlefield <tyler@xxxxxxxxxxxxx>
- To: programmingblind@xxxxxxxxxxxxx
- Date: Tue, 6 Jul 2010 13:59:20 -0600
You can use void in your functions in c, but I believe the OP was in c++.
Either way, you can compile int main(void) with g++ and gcc.
Thanks,
Tyler Littlefield
http://tds-solutions.net
Twitter: sorressean
On Jul 6, 2010, at 1:57 PM, Ken Perry wrote:
> This is not correct c code to put void.
> Ken
>
>
> -----Original Message-----
> From: programmingblind-bounce@xxxxxxxxxxxxx
> [mailto:programmingblind-bounce@xxxxxxxxxxxxx] On Behalf Of Tyler Littlefield
> Sent: Tuesday, July 06, 2010 11:59 AM
> To: programmingblind@xxxxxxxxxxxxx
> Subject: Re: What's wrong with my code?
>
> 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
>>>>>>> }
>>>>>>>
>>>>>>>
>>>>>>
>>>>>>
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