英语单词

null是什么意思

null

英 [nʌl] 美 [nʌl]
  • adj. 无效的,无价值的;等于零的
  • n. 零,[数] 空

英文词源


null (adj.)
"void of legal force," 1560s, from Middle French nul, from Latin nullus "not any, none," from ne- "not, no" (see un-) + illus "any," diminutive of unus "one" (see one).

双语例句


1. A spokeswoman said the agreement had been declared null and void.
女发言人称该协议已宣布无效。

来自柯林斯例句

2. Failure. The NULL value has been passed as a parameter.
失败. 将空指针NULL传给了一个参数.

来自互联网

3. If mem block is NULL, pointer is ignored and free immediately returns.
如果NULL内存块,操作将被忽略并且函数立即返回.

来自互联网

4. This function returns the removed node on success, or NULL on failure.
这个函数如果执行成功,将返回被删除的子节点;如果执行失败, 将返回null[空值].

来自互联网

5. A pointer to a NULL - terminated string representing a device instance identifier.
指向一个以NULL结尾的字符串,象征设备实例描述符.

来自互联网

考试词汇

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