«

Hi
how can I

bool a(true);
cout << a;

and expect it to print out

true

and not just

1


thanks

Gary Wessle wrote:

> how can I
>
> bool a(true);
> cout << a;
>
> and expect it to print out
>
> true
>
> and not just
>
> 1

Before someone provides a cheaper answer, may I ask if one might imbue a
locale?

(Note that some cultures don't call a positive boolean "true"

--
Phlip
http://www.greencheese.us/ZeekLand <-- NOT a blog!!!

Gary Wessle wrote:
> Hi
> how can I
>
> bool a(true);
> cout << a;
>
> and expect it to print out
>
> true
>
> and not just
>
> 1


Something like this?


bool a = true;
std::cout.setf(std::ios::boolalpha);
std::cout << a << "\n";

Regards,
Sumit.

Gary Wessle wrote:
> Hi
> how can I
>
> bool a(true);
> cout << a;
>
> and expect it to print out
>
> true
>
> and not just
>
> 1

Output the manipulator 'boolapha' to the 'cout' stream
before outputting your booleans. Also make sure you
#include <iomanip>.

HTH,
- J.

Gary Wessle wrote:
> Hi
> how can I
>
> bool a(true);
> cout << a;
>
> and expect it to print out
>
> true
>
> and not just
>
> 1
>

The cheap answer Phillip was referring to is:

std::cout << a ? "true" : "false";

Salt_Peter wrote:
> Gary Wessle wrote:
>> Hi
>> how can I
>>
>> bool a(true);
>> cout << a;
>>
>> and expect it to print out
>>
>> true
>>
>> and not just
>>
>> 1
>>
>
> The cheap answer Phillip was referring to is:
>
> std::cout << a ? "true" : "false";

Should probably be parenthesized:

std::cout << (a ? "true" : "false");

V
--
Please remove capital 'A's when replying by e-mail
I do not respond to top-posted replies, please don't ask

Victor Bazarov wrote:

> Salt_Peter wrote:
>> Gary Wessle wrote:
>>> Hi
>>> how can I
>>>
>>> bool a(true);
>>> cout << a;
>>>
>>> and expect it to print out
>>>
>>> true
>>>
>>> and not just
>>>
>>> 1
>>>
>>
>> The cheap answer Phillip was referring to is:
>>
>> std::cout << a ? "true" : "false";
>
> Should probably be parenthesized:
>
> std::cout << (a ? "true" : "false");

Yup. That's one of those places where operator abuse can stab you in the
back.

PS: Yes, using bit shift operators for stream I/O counts as operator abuse
in my eyes.

Hi

Jacek Dziedzic wrote:
> Output the manipulator 'boolapha' to the 'cout' stream
> before outputting your booleans. Also make sure you
> #include <iomanip>.

Actually, there is no need to #include <iomanip>, as std::boolalpha is
declared in header <ios>, which must be included by <ostream> (if my
understanding is correct).

Cheers
Markus

Rolf Magnus wrote:
> Victor Bazarov wrote:
>
> > std::cout << (a ? "true" : "false");
>
> Yup. That's one of those places where operator abuse can stab you in the
> back.
>
> PS: Yes, using bit shift operators for stream I/O counts as operator abuse
> in my eyes.

Heh...

Is it still abuse if you call them insertion/extraction operators?
What else would one use?

Hi

Phlip wrote:

> Before someone provides a cheaper answer, may I ask if one might imbue a
> locale?
>
> (Note that some cultures don't call a positive boolean "true"

I'm just curious, have you seen an implementation where the output would not
be "true" and "false" for some locale? I have tried it here, because I
somehow expected "vrai"/"faux", "juist"/"fout", "wahr"/"falsch" and alike.
(I was disappointed, it was always "true"/"false")

Markus