I would look at the problem differently. Consider the following pseudo-code. 
Open output file for update.
for each input file
    open current input file for input
    read header
    if (first input) {ouput header}
    read body
    output body
    close input file
close output file

[download]

You existing code already has nearly all the details. I think you can reorganize it yourself.

Bill

In reply to Re: Merging of files with some edit. by BillKSmith
in thread Merging of files with some edit. by anirbanphys

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