Hi all, I’m new to ROOT and my knowledge of C++ is also fairly limited. It therefore follows that I have become stuck. 
I am trying to get some data from a .txt file into a .root file. There is only one variable and the timestamp, but many entries per timestamp, and not always the same amount. e.g.
2011-11-11 17:51:33.735 3 1 4 623 234 43 76
2011-11-11 17:51:34.735 6 456 45 6 28 92 345 23 23 1 45
At the moment my program will process the timestamp fine and take the first data point for each, but I can’t work out how to make it take n data points.
This is the relevant bit of code that I am using:
ifstream file1(inputfile.c_str(),ios_base::in); // open file
std::string line;
while ( !file1.eof() )
{
getline(file1,line);
std::stringstream s(line);
bool ok = (s>>day>>time>>data);
daytime = day +" "+ time; // convert date to string
datime.Set(daytime.c_str());//give string to TDataobject
t = datime.Convert();// convert to integer (unix time)
tc2011.Fill(); //fill tree
j++; //Increase counter
}
tc2011.Print(); //print tree in terminal
tc2011.Write(); //write tree to file
std::cout << j << std::endl;
file1.close(); //close file
I want to adapt this so that “data” can be a sort of array of unknown size, but I have no idea how to proceed.
Any help would be greatly appreciated!