Looping over a "config.in" file

[FernandoVergara]

I have a doubt about the usage of a “config.in” file in my code, say that I want to run a process in n root files and I list them this way:

first_file.root
second_file.root

and then I want to open it in a root file (this way):

ifstream inFile;

    inFile.open ("config.in", ios::in);


    if (!inFile){
        std::cerr << "Error: Can't open input file:" << std::endl;
        exit(1);
        }

but say I want to open the files and loop over them without opening each one this way:

input_filename = input_file->GetValue("input_filename", "file");
output_filename = input_file->GetValue("output_filename", "file");

or should I just put them in a .txt file and loop over that?

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ROOT Version: 6.14.06
Platform: Ubuntu 18.04
Compiler: g++ 7.4.0

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[Pnine]

Hi Fernando,

is this a ROOT question? It looks like the answer can be found seeking a bit in stack overflow

P