[mehranism]

Dear Foamers,
I want to write output of a scalar in a .txt file during runTime. all the things are ok and the log file shows correct answer. but in the text file the scalar over writes on its old time value.
can anyone help me to write output of this scalar (yy in this code) and runTime in two separate columns in each time step in the .txt file?

here is the code:
GRBFoam.C

[khedar]

You should open the file in append mode to not over write the values. Instead of

std::ofstream file("results.txt");
 file << runTime.timeName() << " " << yy << std::endl << "\n";
 file << nl << endl;
 file.close();

try this

std::ofstream file;
  file.open ("results.txt", std::ofstream::out | std::ofstream::app);

 file << runTime.timeName() << " " << yy << std::endl << "\n";
 file << nl << endl;
 file.close();

See doc here:
http://www.cplusplus.com/reference/f...ofstream/open/

[mehranism]

Originally Posted by khedar

You should open the file in append mode to not over write the values. Instead of

std::ofstream file("results.txt");
 file << runTime.timeName() << " " << yy << std::endl << "\n";
 file << nl << endl;
 file.close();

try this

std::ofstream file;
  file.open ("results.txt", std::ofstream::out | std::ofstream::app);

 file << runTime.timeName() << " " << yy << std::endl << "\n";
 file << nl << endl;
 file.close();

See doc here:
http://www.cplusplus.com/reference/f...ofstream/open/

thank you so much Khedar. the file must be open before runTime. it helped me so much.