C:\Program Files (x86)\Dev-Cpp\MinGW64\x86_64-w64-mingw32\bin\ld.exe cannot open output file D:\xxx\c++用u盘\c++\未命名4.exe: Permission denied

D:\xxx\c++用u盘\c++\collect2.exe [Error] ld returned 1 exit status

Dev-C++试了10^10086 次都没过，求助dalao qwq