[nfbcs] [program-l] Re: Help with Another Assignment

[Lanie Molinar]

I fixed it and got it to stop giving me errors, but I’m now having another issue. For the condition that’s supposed to cout dashes, I get only a blank line after I enter -1 for all 10 grades.

Sent from Mail for Windows 10

From: Dzhovani Chemishanov
Sent: Friday, November 3, 2017 9:22 AM
To: Lanie Molinar
Cc: program-l at freelists.org; Lanie Molinar via nfbcs
Subject: Re: [program-l] Re: [nfbcs] Help with Another Assignment

Hi,
  As I said, my c++ is rusty but still I'd be quite surprised to find
working code of the type:
cout << some_text << a_void_function();
It is okay to have a cout statement in a void function, but it is not
okay to have a void function in a cout statement.
Any other type of function that returns printable result could be
called from a cout, but the fundamental property of void functions is
that they do not return value to be sent to the c out stream.
  Can you check your previous project and compare the approach there
with the current one?

On 11/3/17, Lanie Molinar <laniemolinar91 at gmail.com> wrote:
> Hi. I’ve used cout statements this way in a void function before, though, so
> I don’t understand why it doesn’t work. In a project I did just a couple
> weeks ago, I created a display function that was void but had multiple cout
> statements in it. This seems like the same kind of thing.
>
> Sent from Mail for Windows 10
>
> From: Dzhovani Chemishanov
> Sent: Friday, November 3, 2017 8:26 AM
> To: program-l at freelists.org
> Cc: Lanie Molinar via nfbcs; laniemolinar91 at gmail.com
> Subject: Re: [program-l] Re: [nfbcs] Help with Another Assignment
>
> this line
> cout << "Average Grade: " << averageGrades(grades, NUMGRADES) << "%\n";
> the function that you are calling is void and you can't print result
> from it because it doesn't return anything.
> move all cout statements in it and avoid all the mess.
> Also, my cpp is rusty, so I hope that the way you are trying to fill
> in the array is valid.
> HTH,
> Dzhovani
>
> On 11/3/17, Mike Gorse <mike at straddlethebox.org> wrote:
>> Hi Lanie,
>>
>> If I try to compile your code, then I get this error:
>>
>> a31.cpp:71:30: error: no match for ‘operator<<’ (operand types are
>> ‘std::basic_ostream<char>’ and ‘void’)
>>      cout << "Average Grade: " << averageGrades(grades, NUMGRADES) <<
>> "%\n";
>>
>> The "void" is the key here--the compiler thinks that you are trying to
>> pass something with a void type to the stream. From that, I'd guess that
>> averageGrades() isn't returning a value. When I look at the function
>> prototype, it is, in fact, returning void, rather than returning a value
>> that can be printed by the caller.
>>
>> Hth,
>> -Mike
>> ---311908982-671148510-1509712654=:14384--
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>

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