?? fig18_04.pl
字號:
#!/usr/bin/perl
# Fig. 18.4: fig18_04.pl
# Uses the system function to clear the screen.
use warnings;
use strict;
print( "What file would you like to create? " );
chomp( my $file = <STDIN> );
( $^O =~ /Win/ ) ? system( "cls" ) : system( "clear" );
print( "Type the text you wish to be in this file.\n" );
print( "Type clear on a blank line to start over.\n" );
print( "Type quit on a blank line when you are finished.\n" );
open( FILE, ">$file" ) or die( "Cannot open: $!" );
while ( <STDIN> ) {
last if ( /quit/ );
if ( /clear/ ) {
( $^O =~ /Win/ ) ? system( "cls" ) : system( "clear" );
print( "Type the text you wish to be in this file.\n" );
print( "Type clear on a blank line to start over.\n" );
print( "Type quit on a blank line " );
print( "when you are finished.\n" );
open( FILE, ">$file" ) or die( "Cannot open: $!" );
}
else {
print( FILE );
}
}
close( FILE ) or die( "Cannot close: $!" );
###########################################################################
# (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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