How to write multiple .tsv files

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The discussion centers on the challenge of reading from a large text file and writing its contents into multiple smaller TSV files in C++. The user, Junhui, is facing a limitation with the `ofstream` class, which requires a constant character pointer for the filename, making it difficult to modify the filename for multiple output files. The user is seeking solutions or alternative approaches, including those based on ROOT, to overcome this issue.
junhui.liao
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Hi, guys,

I have to read from a big txt file into multiple small .tsv files.
But I was blocked at the file name. Since according to the
definition of ofstream, the filename is constant char *, then
is no way to modify the filename, which results in unable to
write multiple files.

Does anybody has any idea on this ?

Thanks a lot in advance !

Best !

Junhui
 
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my code in C++, sorry for the missing.
If there is any solution based on ROOT,
it's good also.
 

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