From: wolf Date: Mon, 12 Sep 2005 01:50:23 +0000 (+0000) Subject: Explain one last thing. X-Git-Url: https://gitweb.dealii.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=da18aa690ce7a135dbcfc68cd7ab4196e38039c4;p=dealii-svn.git Explain one last thing. git-svn-id: https://svn.dealii.org/trunk@11407 0785d39b-7218-0410-832d-ea1e28bc413d --- diff --git a/deal.II/examples/step-19/step-19.cc b/deal.II/examples/step-19/step-19.cc index 74dd166f91..6382e2685e 100644 --- a/deal.II/examples/step-19/step-19.cc +++ b/deal.II/examples/step-19/step-19.cc @@ -351,20 +351,52 @@ parse_command_line (const int argc, const std::string parameter_file = args.front (); args.pop_front (); - // Now read the input file: + // Now read the input file: prm.read_input (parameter_file); - // Both the output file name as well as the format can be - // specified on the command line. We have therefore given - // them global variables that hold their values, but they - // can also be set in the parameter file. We therefore need - // to extract them from the parameter file here, because - // they may be overridden by later command line parameters: + // Both the output file name as + // well as the format can be + // specified on the command + // line. We have therefore given + // them global variables that hold + // their values, but they can also + // be set in the parameter file. We + // therefore need to extract them + // from the parameter file here, + // because they may be overridden + // by later command line + // parameters: if (output_file == "") output_file = prm.get ("Output file"); if (output_format == "") output_format = prm.get ("Output format"); + + // Finally, let us note that if we + // were interested in the values of + // the parameters declared above in + // the dummy subsection, we would + // write something like this to + // extract the value of the boolean + // flag (the ``prm.get'' function + // returns the value of a parameter + // as a string, whereas the + // ``prm.get_X'' functions return a + // value already converted to a + // different type): + prm.enter_subsection ("Dummy subsection"); + { + prm.get_bool ("Dummy generate output"); + } + prm.leave_subsection (); + // We would assign the result to a + // variable, or course, but don't + // here in order not to generate an + // unused variable that the + // compiler might warn about. + // + // Alas, let's move on to handling + // of output formats: } else if (args.front() == std::string("-x")) {