c – 编译时可以获得时间(当天)和日期吗？

请注意,这将为您提供使用它们的文件的编译日期.不是链接日期.因此,您必须在每次构建文件时触摸文件,或在MSVC中执行预构建步骤.

The C99 standard says：

6.10.8 Predefined macro names

The following macro names shall be defined by the implementation:

• __DATE__: The date of translation of the preprocessing translation unit: a character string literal of the form “Mmm dd
  yyyy”,where the names of the months are the same as those generated
  by the asctime function,and the first character of dd is a space
  character if the value is less than 10. If the date of translation is
  not available,an implementation-defined valid date shall be supplied.
• __TIME__: The time of translation of the preprocessing translation unit: a character string literal of the form “hh:mm:ss” as
  in the time generated by the asctime function. If the time of
  translation is not available,an implementation-defined valid time
  shall be supplied.

我在这里复制了C99文本,但是这些宏比C99要老得多…我没有设法找到旧的C …的标准文本