请问如何找到string.h的实现代码文件，比如string.c

仅供参考： C:\Program Files (x86)\Microsoft SDK\src\crt\strcat.c C:\Program Files (x86)\Microsoft Visual Studio\VC98\CRT\SRC\STRCAT.C C:\Program Files (x86)\Windows Kits\10\Source\10.0.10150.0\ucrt\string\strcat.c C:\Program Files (x86)\Windows Kits\10\Source\10.0.10240.0\ucrt\string\strcat.c C:\Program Files (x86)\Windows Kits\10\Source\10.0.14393.0\ucrt\string\strcat.c C:\Program Files (x86)\Windows Kits\10\Source\10.0.17763.0\ucrt\string\strcat.c C:\Program Files (x86)\Windows Kits\10\Source\10.0.19041.0\ucrt\string\strcat.c C:\Program Files (x86)\Windows Kits\10\Source\10.0.20348.0\ucrt\string\strcat.c C:\ProgramData{0903F23D-53A8-4207-8B70-39755D51B4DA}\sourcefilesbcbwin32\7AA8951E\E16C52C7\strcat.c C:\Users\All Users{0903F23D-53A8-4207-8B70-39755D51B4DA}\sourcefilesbcbwin32\7AA8951E\E16C52C7\strcat.c D:\Program Files (x86)\Embarcadero\RAD Studio\12.0\source\cpprtl\Source\dinkumware\source\strcat.c D:\Program Files (x86)\Microsoft Visual Studio 10.0\VC\crt\src\strcat.c D:\Qt\5.15.2\Src\qtwebengine\src\3rdparty\chromium\base\strings\strcat.cc G:\Tools\VC6\VC6CN\VC98\CRT\SRC\STRCAT.C G:\Tools\VC6\VC6EN\完整版VC6.0英文版＋中文版\VC6CN\VC98\CRT\SRC\STRCAT.C