sub editcarowner { Title "Edit Car Owner"; print ("==============\n\n"); print ("| CAR MODEL: |\n\n"); print ("==============\n\n\n\n\n\n\n\n\n\n\n\n"); my $carmodel = ; $carmodel = until defined $carmodel; chomp $carmodel; cls(); print ("================\n\n"); print ("| CAR YEAR: |\n\n"); print ("================\n\n\n\n\n\n\n\n\n\n\n\n"); my $caryear = ; $caryear = until defined $caryear; chomp $caryear; cls(); print (" ==================================\n\n"); print ("| CURRENT OWNER: |\n\n"); print (" =============================\n\n\n\n\n\n\n\n\n\n\n\n"); my $currentowner = ; $currentowner = until defined $currentowner; chomp $currentowner; cls(); print (" =============================\n\n"); print ("| NEW CAR OWNER: |\n\n"); print (" =============================\n\n\n\n\n\n\n\n\n\n\n\n"); my $newcarowner = ; $newcarowner = until defined $newcarowner; chomp $newcarowner; cls(); my $file = "DATA/cardata.txt"; local $^I = ".bak"; local @ARGV = ($file); while (<>) { chomp; my ($carmodel,$caryear,$carowner) = split(/\:/); if (($carmodel eq $carmodel) && ($caryear == $caryear)) { print "$carmodel:$caryear:$newcarowner\n"; }else { print "$_\n"; } } unlink("$file.bak"); print ("\n\n\n\n\n\n\n\n"); print ("CAR OWNER UPDATED SUCCESSFULLY!!\n\n\n\n\n\n\n\n\n\n\n\n"); sleep 3; cls(); cars(); } # END EDIT CAR OWNER