Double data type error

Question

1.00/5 (2 votes)

See more:

T_Hours=4;
T_Minutes= 55
T_Sec=19
T_Milli=471
T_Micro= 338.

double TimeInMilliSeconds= (T_Hours*60*60*1000)+(T_Minutes*60*1000)+(T_Sec*1000)+T_Milli+(T_Micro/1000);
TimeInMilliSeconds= 17719471.388;

it displayed as 1.77195e+07 but i want to keep this format 17719471.388 to keep it easy readable.

Posted 18-Dec-15 7:10am

XamBEE

Add a Solution

1 solution

Add a Solution

Add your solution here

Treat my content as plain text, not as HTML

Preview 0

…

Existing Members

Sign in to your account

...or Join us

Download, Vote, Comment, Publish.

Your Email
Password
Forgot your password?

Your Email
This email is in use. Do you need your password?
Optional Password

I have read and agree to the Terms of Service and Privacy Policy
Please subscribe me to the CodeProject newsletters

When answering a question please:

Read the question carefully.
Understand that English isn't everyone's first language so be lenient of bad spelling and grammar.
If a question is poorly phrased then either ask for clarification, ignore it, or edit the question and fix the problem. Insults are not welcome.
Don't tell someone to read the manual. Chances are they have and don't get it. Provide an answer or move on to the next question.

Let's work to help developers, not make them feel stupid.

This content, along with any associated source code and files, is licensed under The Code Project Open License (CPOL)

Jochen Arndt · Accepted Answer · 2015-12-18T07:47:00

Solution 1

You did not show us how the value is displayed (which function is used to print the value to a string or display). Depending on that you can define how floating point values are printed.

Most of these functions (besides C++ streams) use the printf[^] formatting. For floating point values the 'f' format should do what you want. Your example output looks like the 'g' or 'e' format has been used.

To get more significand digits, specify also the precision.

Posted 18-Dec-15 7:47am

Jochen Arndt

Comments

XamBEE 18-Dec-15 16:29pm

qDebug()<<TimeInMilliSeconds;
Result is:=1.77195e+07

Jochen Arndt 18-Dec-15 17:40pm

When using the stream << operator with a floating point value, it will use a default format.

If you want a different format it is up to you to set that format. You can do that by setting the stream format options or pass a string that has been formatted according to your needs.

The first is a common C++ stream operation and the second a common C printf operation or when using some kind of C++ string class the appropiate format function.

Overall these are basics that should be known by each C/C++ programmer (at least he should know how to obtain these information). The usage of streams and the usage of printf like functions are handled by any C++ resp. C tutorial.

This question is not especially Qt related but I know from your other questions that you are using it. I have used Qt first two years ago after 30 years of C programming experience and more than 15 years of C++. And I had really problems with Qt. The documentation often does not help and I used the Qt sources to find out what is really happening.

But you are obviously a beginner not only with Qt but with C/C++. So Qt is a really bad starting point. My suggestion is to learn at least the C/C++ basics before trying to write Qt applications.

I'm actually not able to express this in proper English (coming from the pub) but your profile shows that you are from Germany:
Entschuldige die harte Formulierung, aber ich denke, dass das wirklich nötig war.

nv3 18-Dec-15 18:24pm

My 5 - and you gave good general advice (even after visiting the pub).