c++ - windows里的短路径是个什么写法？

Answer 1

This is not a short path, it is an environment variable.
Using variables is of course more general. Hard-coded things can only work on your own machine.

Take the python you mentioned as a small example. You wrote a clear.py script file, whose function is to clean up the user's system temporary folder.
If you don’t use variables, you might write it like this (pseudocode)

del C:\Users\adminstrator\AppData\Local\Temp\*.*

A script like yours cannot be run on other people’s machines. First of all, you need to know the currently logged-in user name, and you have to call the API to know the user’s Temp folder path (maybe on the D drive or E drive) Possibly)

But if you use the system’s default %TEMP% variable, you don’t need to worry about it

del %TEMP%\*.*

Answer 2

To enhance program portability. For example, whether your Windows is installed on the C drive, D drive, or some X drive, the program can be accessed through a short path without the need to hard code the specific path.

Answer 3

The actual installation directories of different computers are not necessarily the same. For example, some of the same software is installed on the c drive and some on the d drive. The actual location is saved through such an environment variable. The program only needs to access the environment variable. , which can enhance the portability of the program.