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by: tarmat |
last post by:
I'm trying to create a function that will turn a float into a
std::string that always shows the number to two decimal places. I have
the following but it doesn't give the desired output:
inline std::string ftos(float f)
{
std::ostringstream buffer;
buffer << std::setprecision(2) << f;
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by: Woodster |
last post by:
I am starting to use templates and have managed to figure out how to use
std::string, std::map and make_pair successfully so far (Yeah I know -
not much of a big step but I'm getting there)
Previously I was using something like:
char *buffer;
double value = 10.5;
sprintf(buffer, "text %.2f text", value);
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by: Mr Fish |
last post by:
Is it possible for me to record floats in a std::stringstream with
100% accuracy? If so how?
Here's a little prog that demonstrates how the default ss loses
accuracy
//-----------------------------------------------------------------------------
#include <sstream>
#include <iostream>
using namespace std;
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by: kathy |
last post by:
I have code:
std::stringstream sStream;
double pi = 3.14159;
....
sStream << pi; //?????????????
std::str = sStream.str(); //I want str show the scientific format.
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by: Gernot Frisch |
last post by:
hi,
is it possible - or better: why hasn't it been in the std - to add
this function:
ofstream os("xy");
int my_int = 0;
double my_double =123.12;
os << std::format("8.3f", my_double) << std::format(".5d", my_int);
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by: Gary Wessle |
last post by:
hi
the code below is giving me what I want but it is very ugly. and will
not work for a long list of different length numbers.
could you please look at it and comment.
thank you
the desired output is:
0.555504 of an inch foreach 12.55
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by: Anjo Gasa |
last post by:
I'm having some cases where setprecision in combination with iostreams
gives some unepected behavior. Consider the following program:
#include <iostream>
#include <iomanip>
int _tmain(int argc, _TCHAR* argv)
{
float value = 0.063397526741027832;
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by: PengYu.UT |
last post by:
Hi,
I setprecision to be 100 for both cases. I'm wondering why the number
of digits are different.
Also, for a double number, I think any digits that are longer than 15
(or 16) are not meaningful, because it exceed the double number's
precision limit. Even if I setprecision to be 100, shall it truncate
the number to be of 15(or 16) digits?
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by: Johannes Bauer |
last post by:
Hello group,
I've a simple problem with the precision specifiers of stringstream.
Let's say I have this:
double x = 123.4567890;
std::stringstream Strm;
Strm.precision(4);
Strm << std::scientific << x;
std::cerr << Strm.str() << std::endl;
|
by: jinu1996 |
last post by:
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|
by: tracyyun |
last post by:
Dear forum friends,
With the development of smart home technology, a variety of wireless communication protocols have appeared on the market, such as Zigbee, Z-Wave, Wi-Fi, Bluetooth, etc. Each protocol has its own unique characteristics and advantages, but as a user who is planning to build a smart home system, I am a bit confused by the choice of these technologies. I'm particularly interested in Zigbee because I've heard it does some...
|
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by: agi2029 |
last post by:
Let's talk about the concept of autonomous AI software engineers and no-code agents. These AIs are designed to manage the entire lifecycle of a software development project—planning, coding, testing, and deployment—without human intervention. Imagine an AI that can take a project description, break it down, write the code, debug it, and then launch it, all on its own....
Now, this would greatly impact the work of software developers. The idea...
|
by: isladogs |
last post by:
The next Access Europe User Group meeting will be on Wednesday 1 May 2024 starting at 18:00 UK time (6PM UTC+1) and finishing by 19:30 (7.30PM).
In this session, we are pleased to welcome a new presenter, Adolph Dupré who will be discussing some powerful techniques for using class modules.
He will explain when you may want to use classes instead of User Defined Types (UDT). For example, to manage the data in unbound forms.
Adolph will...
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by: conductexam |
last post by:
I have .net C# application in which I am extracting data from word file and save it in database particularly. To store word all data as it is I am converting the whole word file firstly in HTML and then checking html paragraph one by one.
At the time of converting from word file to html my equations which are in the word document file was convert into image.
Globals.ThisAddIn.Application.ActiveDocument.Select();...
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by: adsilva |
last post by:
A Windows Forms form does not have the event Unload, like VB6. What one acts like?
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by: 6302768590 |
last post by:
Hai team
i want code for transfer the data from one system to another through IP address by using C# our system has to for every 5mins then we have to update the data what the data is updated we have to send another system
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by: muto222 |
last post by:
How can i add a mobile payment intergratation into php mysql website.
|
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by: bsmnconsultancy |
last post by:
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