#!/usr/bin/perl
use strict;
use warnings;
print "How old are you?";
$age = <>;
print "What is your favorite color?";
$color = <>;
print "You are $age, and your favorite color is $color.";

[download]
Global Symbol "$age" requires explicit package name at agecolor.pl lin
+e 5
Global Symbol "$color" requires explicit package name at agecolor.pl l
+ine 7
Global Symbol "$age" requires explicit package name at agecolor.pl lin
+e  8
Global Symbol "$color" requires explicit package name at agecolor.pl l
+ine 8
Execution of agecolor.pl aborted due to compilation errors.

[download]
#!/usr/bin/perl
use strict;
use warnings;
print "What is the radius of the circle?";
chomp ($r = <>);
$diameter = (2 * $r);
$area = (3.14 * ($r ** 2));
$cir = ($diameter * 3.14);
print "Radius: $r\n Diameter: $diameter\n Circumference: $cir\n Area: 
+$area";

[download]


Global symbol "$r" requires explicit package name at diameter.pl line 
+5.
Global symbol "$diameter" requires explicit package name at diameter.p
+l line 6.
Global symbol "$r" requires explicit package name at diameter.pl line 
+6.
Global symbol "$area" requires explicit package name at diameter.pl li
+ne 7.
Global symbol "$r" requires explicit package name at diameter.pl line 
+7.
Global symbol "$cir" requires explicit package name at diameter.pl lin
+e 8.
Global symbol "$diameter" requires explicit package name at diameter.p
+l line 8.
Global symbol "$r" requires explicit package name at diameter.pl line 
+9.
Global symbol "$diameter" requires explicit package name at diameter.p
+l line 9.
Global symbol "$cir" requires explicit package name at diameter.pl lin
+e 9.
Global symbol "$area" requires explicit package name at diameter.pl li
+ne 9.
Execution of diameter.pl aborted due to compilation errors.

[download]
It took me 2 days to amke this topic: ______________________________

My list from perl cookbook is named:

1.1slowcat.pl

1.2randcap.pl

1.3wrapdemo.pl

this code does not work, and i ask for help 

#!/usr/bin/perl -w
use strict;
use warnings;
# slowcat - emulate a  slow line printer
# usage: slowcat [-DELAY] [files ...]
$DELAY = ($ARGV[0] =~ /^-([.\d]+)/) ? (shift, $1) : 1;
$| = 1;
while (<>) {
    for (slit(//)) {
        print;
        select(undef,undef,undef, 0.005 * $DELAY);
   }
}

[download]
errors: 
Global symbol "$DELAY" requires explicit package name at 1.1slowcat.pl
+ line 6.
Global symbol "$DELAY" requires explicit package name at 1.1slowcat.pl
+ line 11.
Execution of 1.1slowcat.pl aborted due to compilation errors.

[download]
------------------------------ 

#!/usr/bin/perl -p
# 

randcap: filter to randomly capitalize 20% of the letters
# call to srand() is unnecessary in 5.004
BEGIN { srand(time() ^ ($$ + ($$ << 15))) }
sub randcase { rand(100) < 20 ? "\u$_[0]" : "\l$_[0]" }
s/(\w)/randcase($1)/ge;

[download]
% randcap < genesis | head -9

[download]
errors: 
Semicolon seems to be missing at 1.2randcap.pl line 5.
syntax error at 1.2randcap.pl line 6, near "letters
# call to srand() is unnecessary in 5.004
BEGIN "
syntax error at 1.2randcap.pl line 10, near ";}"
Execution of 1.2randcap.pl aborted due to compilation errors.

[download]
------------------------------------ 

#!/usr/bin/perl -w
use strict;
use warnings;
# wrapdemo - show how Text::Wrap works

@input = ("Folding and splicing is the work of an editor, ",
          "not a mere collection of silicon",
          "and",
          "mobile electrons!");

use Text::Wrap qw($columns &wrap);

$colums = 20;
print "0123456789" x 2, "\n";
print wrap("    ", "  ", @input), "\n";

[download]
errors: 
Global symbol "@input" requires explicit package name at 1.3wrapdemo.p
+l line 6.
BEGIN not safe after errors--compilation aborted at 1.3wrapdemo.pl lin
+e 11.

[download]

I hope it wasn't too much, but still i count with the help, of perlmonks and friends. Best Regards Ray

In reply to mail question and book, and code by Raymond
in thread mail question and book by Raymond

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