C语言中%o是什么意思
时间: 2023-09-27 20:09:37 浏览: 220
Null is a value in computer programming that represents the absence of a value or a lack of data. It is often used to indicate that a variable or expression does not have a value assigned to it. In some programming languages, null is represented by a special keyword, such as "null" or "nil". Null can also be used to indicate an error condition or an invalid result.
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