Re: What's wrong with my code?
- From: Alex Midence <alex.midence@xxxxxxxxx>
- To: programmingblind@xxxxxxxxxxxxx
- Date: Tue, 6 Jul 2010 12:17:16 -0500
Very interesting. Learned a lot today.
Alex m
On 7/6/10, R Dinger <rrdinger@xxxxxxxxxx> wrote:
>
> The argv and argc parameters have always been a part of the language
> definition and come from the C language. Those arguments were in the IBM
> port of the Bell Labs version of C++ that I used at Boeing back in the late
> 1980's. And as far as I know they have also always been part of the C
> language definition.
>
> Richard
>
> ----- Original Message -----
> From: "Joseph Lee" <joseph.lee22590@xxxxxxxxx>
> To: <programmingblind@xxxxxxxxxxxxx>
> Sent: Tuesday, July 06, 2010 8:48 AM
> Subject: RE: What's wrong with my code?
>
>
> Hi,
> Huh... that's something new... I've only seen that under VS.
> Cheers,
> Joseph
>
> -----Original Message-----
> From: programmingblind-bounce@xxxxxxxxxxxxx
> [mailto:programmingblind-bounce@xxxxxxxxxxxxx] On Behalf Of Tyler
> Littlefield
> Sent: Tuesday, July 06, 2010 8:45 AM
> To: programmingblind@xxxxxxxxxxxxx
> Subject: Re: What's wrong with my code?
>
> 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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