?? fig10_06.pl
字號:
#!usr/bin/perl
# Fig. 10.6: fig10_06.pl
# program to work with files
use strict;
use warnings;
print "Opening file for output:\n";
open OUTFILE, ">file.txt" or die "Can't find file.txt : $!";
print "Outputting to file.\n";
print OUTFILE "There was an old lady\n";
close OUTFILE or die "Can not close file.txt : $!";
print "It now reads:\n";
open INFILE, "file.txt" or die "Can not open file.txt : $!";
print while (<INFILE>);
close INFILE or die "Can not close file.txt : $!";
print "\nLet us append to the end of the file:\n";
open OUTFILE, ">>file.txt" or die "Can not open file.txt : $!";
print OUTFILE "who lived in a shoe.\n";
close OUTFILE or die "Can not close file.txt : $!";
print "It now reads:\n";
open INFILE, "file.txt" or die "Can not open file.txt : $!";
print while (<INFILE>);
close INFILE or die "Can not close file.txt : $!";
###########################################################################
# (C) Copyright 2001 by Deitel & Associates, Inc. and Prentice Hall. #
# All Rights Reserved. #
# #
# DISCLAIMER: The authors and publisher of this book have used their #
# best efforts in preparing the book. These efforts include the #
# development, research, and testing of the theories and programs #
# to determine their effectiveness. The authors and publisher make #
# no warranty of any kind, expressed or implied, with regard to these #
# programs or to the documentation contained in these books. The authors #
# and publisher shall not be liable in any event for incidental or #
# consequential damages in connection with, or arising out of, the #
# furnishing, performance, or use of these programs. #
###########################################################################
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