[perl] 标量

for example

#!/usr/bin/perl
 
$integer = 200; 
# 八进制 377 , 十进制为 255 
$octal = 0377;
 
# 十六进制 FF, 十进制为 255 
$hexa = 0xff;

$var = "var";
$quote = '$var'; 

$mul = 4 * 5;                  

$string = '
hello
   world!
';
$foo    = v102.111.111;

print "integer = $integer\n";
print "octal = $octal\n";
print "hexa = $hexa\n";

print "var = $var\n";
print "quote = $quote\n";

print "mul = $mul\n";
print "$string\n";

print "foo = $foo\n";

print "文件名 ". __FILE__ . "\n";
print "行号 " . __LINE__ ."\n";

运行结果如下所示

参考：perl菜鸟教程