Thank you, I've done this : open(UNIT=13,STATUS='new',file='dU_by_dT.TXT')
and at the end of the program
write(UNIT=13,FMT=*) 'Z,T,U'
write(unit=13,FMT=*) Z,T,U
And it creates a text document named dU_by_dT, but there are only Z,T,U as head of column, but there are no data. When I start the...