$a="-1e3ble";
$b="+4.33eeq";
$c="aaa999";
$d="a9z9z9";
print "a = $a and b = $b\n";
print "c = $c and d = $d\n";
print "a + b = ". $a+$b . "\n";
print "c + d = ". $c+$d . "\n";
print "int(b) = ". int($b) . "\n";
print "++a = ". ++$a . "\n";
print "++b = ". ++$b . "\n";
print "++c = ". ++$c . "\n";
print "++d = ". ++$d . "\n";