use strict;
use warnings;
while (my $row = <>) {
chomp $row;
print "Input: '$row' = ";
my $res = eval $row;
print "'$res' :Output\n";
}
use strict;
use warnings;
while (my $row = <>) {
chomp $row;
print "Input: '$row' = ";
my $res = eval $row;
print "'$res' :Output\n";
}