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Output in Log file instead of Standard Input Output

I am developing C++ application.As size of the code increases, I feel my printf output needs to go to some file instead of stdio.

Is there is any standard class or I need to write code from scratch?

If it is about error/debug-messages, they could be sent to stderr (cf: fprintf), to separate them from the normal output. stderr can be redirected from shell:

Code:

./myexe 2>messages.log

Or... if you simply want to write to a FILE instead of to stdout,

Code:

#include <fstream>

Sort of like this:

Code:

#include <iostream>

#include <fstream>

using namespace std;



int main() 

{

    ofstream log;

    log.open("cpp.log", ios::app);

    log << "Log entry here.\n";

    log.close();



    return 0;

}

So after executing the code above (named file_write):

Code:

./file_write

...three times, I get the following content in the file cpp.log:

Code:

cat cpp.log 

Log entry here.

Log entry here.

Log entry here.

But maybe that was too simple?

Best regards,
HMW

PS. Haven't used c++ in AGES. Please be gentle! DS.

Thanks.I want similar to what HMW has written.