I trying to format my output to display a set number of decimal
places. I have been trying to use the <iomanip> setprecision(), but
that will only display the total number of digits. Can someone please
help me???? Thanks.
36  7827 
Uzytkownik "Andrew" <ad*****@hqcnsg .navy.mil> napisal w wiadomosci
news:8e******** *************** ***@posting.goo gle.com... I trying to format my output to display a set number of decimal
places. I have been trying to use the <iomanip> setprecision(), but
that will only display the total number of digits. Can someone please
help me???? Thanks.
Check out boost::format.
Marcin
"Andrew" <ad*****@hqcnsg .navy.mil> wrote in message
news:8e******** *************** ***@posting.goo gle.com... I trying to format my output to display a set number of decimal
places. I have been trying to use the <iomanip> setprecision(), but
that will only display the total number of digits. Can someone please
help me???? Thanks.
You have to set the 'float mode' to fixed. E.g.
#include <iostream>
#include <iomanip>
using namespace std;
int main()
{
cout << fixed << setprecision(1) << 1.23456789 << '\n';
cout << fixed << setprecision(2) << 1.23456789 << '\n';
cout << fixed << setprecision(3) << 1.23456789 << '\n';
cout << fixed << setprecision(4) << 1.23456789 << '\n';
cout << fixed << setprecision(5) << 1.23456789 << '\n';
}
john
Marcin Kalicinski wrote:
Uzytkownik "Andrew" <ad*****@hqcnsg .navy.mil> napisal w wiadomosci
news:8e******** *************** ***@posting.goo gle.com... I trying to format my output to display a set number of decimal
places. I have been trying to use the <iomanip> setprecision(), but
that will only display the total number of digits. Can someone please
help me???? Thanks.
Check out boost::format.
Marcin
Boost is OT in this forum.
"Andrew" <ad*****@hqcnsg .navy.mil> wrote in message
news:8e******** *************** ***@posting.goo gle.com... I trying to format my output to display a set number of decimal
places. I have been trying to use the <iomanip> setprecision(), but
that will only display the total number of digits. Can someone please
help me???? Thanks.
#include <ios>
#include <iomanip>
#include <iostream>
int main()
{
double d(3.14);
std::cout << std::fixed << std::setprecisi on(4)
<< d << '\n';
return 0;
}
Output:
3.1400
-Mike
"John Harrison" <jo************ *@hotmail.com> wrote in message
news:c63g5t$7da a2$1@ID- You have to set the 'float mode' to fixed. E.g.
cout << fixed << setprecision(1) << 1.23456789 << '\n';
cout << fixed << setprecision(2) << 1.23456789 << '\n';
The float mode is sticky, so you don't have to set it in each line, though
setting it is harmless and often a good idea for clarity if we're fixing
fixed and scientific output in the same program.
cout << fixed;
cout << setprecision(1) << 1.23456789 << '\n';
cout << setprecision(2) << 1.23456789 << '\n';
Julie <ju***@nospam.c om> wrote in news:40******** *******@nospam. com: Marcin Kalicinski wrote:
Uzytkownik "Andrew" <ad*****@hqcnsg .navy.mil> napisal w wiadomosci
news:8e******** *************** ***@posting.goo gle.com... > I trying to format my output to display a set number of decimal
> places. I have been trying to use the <iomanip> setprecision(), but
> that will only display the total number of digits. Can someone please
> help me???? Thanks.
Check out boost::format.
Marcin
Boost is OT in this forum.
Why don't you like boost?
Strange, but I've seen other people not using it *just because* (i'm not
counting compiler issues that might arise with boost).
Why - I wonder.
cheers!
b
bartek wrote:
Julie <ju***@nospam.c om> wrote in news:40******** *******@nospam. com:
Marcin Kalicinski wrote:
Uzytkownik "Andrew" <ad*****@hqcnsg .navy.mil> napisal w wiadomosci
news:8e******** *************** ***@posting.goo gle.com...
> I trying to format my output to display a set number of decimal
> places. I have been trying to use the <iomanip> setprecision(), but
> that will only display the total number of digits. Can someone please
> help me???? Thanks.
Check out boost::format.
Marcin
Boost is OT in this forum.
Why don't you like boost?
I did not express my preference for Boost in my response.
I was expressing (rather tersely) that a reference to Boost is off-topic in
this forum when there is an existing and preferred solution in C++ language.
Julie <ju***@nospam.c om> wrote in news:40******** *******@nospam. com: bartek wrote:
Julie <ju***@nospam.c om> wrote in news:40******** *******@nospam. com:
> Marcin Kalicinski wrote:
>>
>> Uzytkownik "Andrew" <ad*****@hqcnsg .navy.mil> napisal w wiadomosci
>> news:8e******** *************** ***@posting.goo gle.com...
>> > I trying to format my output to display a set number of decimal
>> > places. I have been trying to use the <iomanip> setprecision(),
>> > but that will only display the total number of digits. Can
>> > someone please help me???? Thanks.
>>
>> Check out boost::format.
>>
>> Marcin
>
> Boost is OT in this forum.
Why don't you like boost?
I did not express my preference for Boost in my response.
I was expressing (rather tersely) that a reference to Boost is
off-topic in this forum when there is an existing and preferred
solution in C++ language.
Sorry, I overreacted to your post.
Although, I don't think that mentioning boost is off topic here at all.
Just as it's not off topic to direct an (confused?) individual to other
(more appropriate?) newsgroups, isn't it?
cheers!
b
On Tue, 20 Apr 2004 08:45:50 -0700 in comp.lang.c++, Julie
<ju***@nospam.c om> wrote, Marcin Kalicinski wrote:
Uzytkownik "Andrew" <ad*****@hqcnsg .navy.mil> napisal w wiadomosci
news:8e******** *************** ***@posting.goo gle.com... > I trying to format my output to display a set number of decimal
> places. I have been trying to use the <iomanip> setprecision(), but
> that will only display the total number of digits. Can someone please
> help me???? Thanks.
Check out boost::format.
Marcin
Boost is OT in this forum.
Where OT = "On Topic" This thread has been closed and replies have been disabled. Please start a new discussion. Similar topics | |
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