下載後將副檔名改成zip（.cpp和.h為相同檔案，下載一個即可）
更改副檔名教學 :
打開任意資料夾 >> 點擊上方 "檢視" >> 勾選 "副檔名" >> 將.cpp或.h更改成.zip
解壓縮 >> 點進 reference 目錄 >> 點進 en 目錄 >> Main_Page.html 就可以看到完整的cpprefernce.com離線版
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Download the partial judge code and change the extension to .zip. (.cpp and .h is the same file. Donwload one of them is enough.)
Open the folder with the file in it >> click "view" >> check "File name extensions" >> change .cpp or .h to .zip
Unzip the file >> click "reference" > click "en" >> open "Main_Page.html". Then you can use the offline version of cppreference.com.