logging - How to write log file so that it can be read with notepad in real time for C++ -


i need logger c++. , found post small logger class, led me simple logger http://www.drdobbs.com/cpp/201804215.

it uses following method wirte log file.

file* pfile = fopen("application.log", "a"); std::ostringstream os; os<<"i log line."<<std::endl; fprintf(pfile, "%s", os.str().c_str()); fflush(pfile);

but doesn't work expected. assume, log file open in notepad, each new log line showing after fprintf , fflush. turned out have close , reopen file notepad see update.

so there way write log file in c++ allows reading in real time, makes log file resemble win32 console or vs output window? miss days when can dump console.log in javascript. :)

thanks.

this not problem code, issue notepad. notepad not automatically check changes in file have open.

instead, should use tool does, instance notepad++, or indeed editors designed programmers.

if have installed cygwin, use tail -f monitor additions log file.


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