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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: Hystou |
last post by:
Most computers default to English, but sometimes we require a different language, especially when relocating. Forgot to request a specific language before your computer shipped? No problem! You can effortlessly switch the default language on Windows 10 without reinstalling. I'll walk you through it.
First, let's disable language synchronization. With a Microsoft account, language settings sync across devices. To prevent any complications,...
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by: Oralloy |
last post by:
Hello folks,
I am unable to find appropriate documentation on the type promotion of bit-fields when using the generalised comparison operator "<=>".
The problem is that using the GNU compilers, it seems that the internal comparison operator "<=>" tries to promote arguments from unsigned to signed.
This is as boiled down as I can make it.
Here is my compilation command:
g++-12 -std=c++20 -Wnarrowing bit_field.cpp
Here is the code in...
|
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by: jinu1996 |
last post by:
In today's digital age, having a compelling online presence is paramount for businesses aiming to thrive in a competitive landscape. At the heart of this digital strategy lies an intricately woven tapestry of website design and digital marketing. It's not merely about having a website; it's about crafting an immersive digital experience that captivates audiences and drives business growth.
The Art of Business Website Design
Your website is...
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by: Hystou |
last post by:
Overview:
Windows 11 and 10 have less user interface control over operating system update behaviour than previous versions of Windows. In Windows 11 and 10, there is no way to turn off the Windows Update option using the Control Panel or Settings app; it automatically checks for updates and installs any it finds, whether you like it or not. For most users, this new feature is actually very convenient. If you want to control the update process,...
|
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...
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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();...
|
by: TSSRALBI |
last post by:
Hello
I'm a network technician in training and I need your help.
I am currently learning how to create and manage the different types of VPNs and I have a question about LAN-to-LAN VPNs.
The last exercise I practiced was to create a LAN-to-LAN VPN between two Pfsense firewalls, by using IPSEC protocols.
I succeeded, with both firewalls in the same network. But I'm wondering if it's possible to do the same thing, with 2 Pfsense firewalls...
|
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: bsmnconsultancy |
last post by:
In today's digital era, a well-designed website is crucial for businesses looking to succeed. Whether you're a small business owner or a large corporation in Toronto, having a strong online presence can significantly impact your brand's success. BSMN Consultancy, a leader in Website Development in Toronto offers valuable insights into creating effective websites that not only look great but also perform exceptionally well. In this comprehensive...
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