花蜻宽 发表于 2018-8-30 12:54:24

perl数组,perl if语句

  my @ss = ("a","b","c","d");
  print $ss显示为a
  print @ss 显示为a c
  @ss的标量为4
  if (@ss < 5)
  {
  command
  }
  else
  {
  command
  }
  if($date == $today)
  {
  command;
  }
  elseif($date == $christmas)
  {
  command;
  }
  else
  {
  command;
  }
  print "happy unbirthday" unless ($date == $today);
  unless ($date != $today)
  {
  command;
  }
  else
  {
  command;
  }
  IF……ELSE
  ($date == $today) ? print "Happy B.Day!\n" : print "Happy Day!\n";

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