how to write log file in C++

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i having problem of exe getting ~~crace~~ crash at after running few days, means two or three days,
that why i want to add some loge code by which i come to know when it is getting ~~crace~~ crash and what happened, why it is getting ~~crace~~ crash. please help me

Posted 25-Dec-11 18:59pm

razzzz87

Updated 3-Jan-12 7:44am

CPallini

v3

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Mehdi Gholam 26-Dec-11 1:02am

EDIT -> corrected spelling

Sergey Alexandrovich Kryukov 26-Dec-11 1:32am

What is your platform?
--SA

BrainlessLabs.com 26-Dec-11 1:37am

Well you need to provide more info.

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Sergey Alexandrovich Kryukov · Answer 1 · 2011-12-25T19:34:00

Solution 1

Some simple and platform-independent (you did not share what platform you are using anyway) methods are shown in a code samples here: http://www.daniweb.com/software-development/cpp/threads/121633[^].

—SA

Posted 25-Dec-11 19:34pm

Sergey Alexandrovich Kryukov

Updated 3-Jan-12 7:39am

v2

Comments

Albert Holguin 4-Jan-12 16:04pm

That solution works... +5

Sergey Alexandrovich Kryukov 4-Jan-12 18:52pm

Thank you for reassuring, Albert.
--SA

Stefan_Lang · Answer 2 · 2012-01-03T06:39:00

While writing to a log file might help you finding the problem, that isn't the best way. For one you would always have to make sure the file is flushed and closed properly after each log statement, to make sure half of the log statements aren't lost in the cache. Also these files can easily get quite large if you're not careful, and may cause entirely different problems of their own.

The best way to locate an error is using a debugger. Development environments such as Visual Studio or Eclipse offer built-in debuggers that are easy to use and will often put you right at the point in your source code where the crash happens. Make sure to read the online help and documentation for the IDE you have, or if you don't have a debugger yet, do yourself a favor and get one.

Satheesh1546 · Answer 3 · 2012-01-03T16:22:00

Solution 3

Hi,

Writing a log file, need to have understanding of the following API's.

CreateFile()
WriteFile()
GetSystemTime()

write a log file of your own.

Cheers

Posted 3-Jan-12 16:22pm

Satheesh1546

Comments

Chuck O'Toole 4-Jan-12 3:44am

Don't forget SetFilePointer()

how to write log file in C++

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