退一万步讲，如果看不懂题目或是毫无头绪，完全可以直接去Place of work hour或邮件联系tutor。老师会很热心帮助你解决思路、切题等问题。多和老师互动不仅能获得更专业及时的建议，还能和tutor搭建友好的关系哦。 All programmes ought to return the worth 0 in the event of success, non-0 in the event of failure, plus a string to describe the result. This really is a regular Unix convention: we return... https://adsbookmark.com/story12702597/%E7%BE%8E%E5%9B%BD%E4%BB%A3%E5%86%99-things-to-know-before-you-buy