use strict;
my $abcd = "Hello how r you?";
my $hello="Hello";
$abcd =~ s{\w}
{
#{
#}{
if ($hello)
{"1"}
else
{"0"}
}exgs;
print $abcd;
####
Substitution replacement not terminated at test.pl line 5.
####
use strict;
my $abcd = "Hello how r you?";
my $hello="Hello";
$abcd =~ s{\w}
{
if ($hello)
{"1"}
else
{"0"}
}exgs;
print $abcd;