Thank you so much. It works after i remove the "use autodie qw( :all );" But after i update the formation.txt to: 
SW
DR
DC
DC
DL
SW
DR
DC
DC
DL

[download]
and SW.txt: 
Varane 114.75
Pepe 65.2
Nacho 60.3

[download]
The output is: 
SW Varane 114.75#first line of output
DR Arbeloa 149#second line of output
DC Ramos 169#third line of output
DC Pepe 163#fourth line of output
DL Marcelo 148.5#fifth line of output
SW Pepe 65.2#sixth line of output
DR Carvajal 146#seventh line of output
DC Varane 153#eighth line of output
DC Nacho 134#ninth line of output
DL Coentrao 148#tenth line of output

[download]
The sixth line of output is supposed to be Nacho because Pepe is already appear in fourth line. And same goes to 8th line and 9th line. In other words, the contents of the second column are not suppose to repeat or have the same value.

In reply to Re^4: Football formation by eminempark
in thread Football formation by eminempark

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