what is "streamsize" and "width(n)"? 
June 17th, 2007, 01:45 PM
| | | |
Hello,
I read the specification of width(n) and it says this function allows
me to pad on the left to the stream's width, and this width is
"streamsize". What is streamsize exactly? Is it measured in the
number of chars or something?
Thanks,
Jess
|
June 17th, 2007, 01:55 PM
| | | | re: what is "streamsize" and "width(n)"?
On Sun, 17 Jun 2007 05:37:09 -0700, Jess wrote: Quote:
Hello,
>
I read the specification of width(n) and it says this function allows
me to pad on the left to the stream's width, and this width is
"streamsize". What is streamsize exactly? Is it measured in the
number of chars or something?
>
| It's a typedef for one of the signed basic integral types, representing
the number of characters transferred in an io operation, or the size
of io buffers.
--
Obnoxious User |
June 17th, 2007, 02:15 PM
| | | | re: what is "streamsize" and "width(n)"?
On Jun 17, 10:34 pm, Obnoxious User <O...@127.0.0.1wrote: Quote:
On Sun, 17 Jun 2007 05:37:09 -0700, Jess wrote:> Quote:
I read the specification of width(n) and it says this function allows
me to pad on the left to the stream's width, and this width is
"streamsize". What is streamsize exactly? Is it measured in the
number of chars or something?
| >
It's a typedef for one of the signed basic integral types, representing
the number of characters transferred in an io operation, or the size
of io buffers.
>
--
Obnoxious User
|
I tried it on an example
cout.width(10);
cout << "hello" << endl;
Then I noticed there are only 5 characters padded on the left of
"hello". Why is it not 10?
Thanks,
Jess |
June 17th, 2007, 02:25 PM
| | | | re: what is "streamsize" and "width(n)"?
On Sun, 17 Jun 2007 06:08:14 -0700, Jess wrote: Quote:
On Jun 17, 10:34 pm, Obnoxious User <O...@127.0.0.1wrote: Quote:
>On Sun, 17 Jun 2007 05:37:09 -0700, Jess wrote:>> Quote:
I read the specification of width(n) and it says this function allows
me to pad on the left to the stream's width, and this width is
"streamsize". What is streamsize exactly? Is it measured in the
number of chars or something?
| >>
>It's a typedef for one of the signed basic integral types, representing
>the number of characters transferred in an io operation, or the size
>of io buffers.
>>
>--
> Obnoxious User
| >
>
I tried it on an example
>
cout.width(10);
cout << "hello" << endl;
>
Then I noticed there are only 5 characters padded on the left of
"hello". Why is it not 10?
>
| http://www.cplusplus.com/reference/i...ase/width.html
--
Obnoxious User |
June 17th, 2007, 02:25 PM
| | | | re: what is "streamsize" and "width(n)"?
Jess wrote: Quote:
On Jun 17, 10:34 pm, Obnoxious User <O...@127.0.0.1wrote: Quote:
>On Sun, 17 Jun 2007 05:37:09 -0700, Jess wrote: Quote:
>>Hello,
>>I read the specification of width(n) and it says this function allows
>>me to pad on the left to the stream's width, and this width is
>>"streamsize". What is streamsize exactly? Is it measured in the
>>number of chars or something?
| >It's a typedef for one of the signed basic integral types, representing
>the number of characters transferred in an io operation, or the size
>of io buffers.
>>
>--
> Obnoxious User
| >
>
I tried it on an example
>
cout.width(10);
cout << "hello" << endl;
>
Then I noticed there are only 5 characters padded on the left of
"hello". Why is it not 10?
>
Thanks,
Jess
>
| Because "hello" is also five characters. width(10) means print the next
value in a 'field' of width 10, 5 spaces plus 5 for "hello" equals 10.
john |
June 17th, 2007, 02:35 PM
| | | | re: what is "streamsize" and "width(n)"?
On Jun 17, 11:18 pm, John Harrison <john_androni...@hotmail.com>
wrote: Quote:
Jess wrote: Quote:
On Jun 17, 10:34 pm, Obnoxious User <O...@127.0.0.1wrote: Quote:
On Sun, 17 Jun 2007 05:37:09 -0700, Jess wrote:
>Hello,
>I read the specification of width(n) and it says this function allows
>me to pad on the left to the stream's width, and this width is
>"streamsize". What is streamsize exactly? Is it measured in the
>number of chars or something?
It's a typedef for one of the signed basic integral types, representing
the number of characters transferred in an io operation, or the size
of io buffers.
| | >>> Quote:
cout.width(10);
cout << "hello" << endl;
| > Quote:
Then I noticed there are only 5 characters padded on the left of
"hello". Why is it not 10?
| >>
Because "hello" is also five characters. width(10) means print the next
value in a 'field' of width 10, 5 spaces plus 5 for "hello" equals 10.
>
john
| Thanks!
Jess |  |
| | |  /bytes/about
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