I have read the answers for [What's the best way to check if a file exists in C? (cross platform)](https://stackoverflow.com/questions/230062/whats-the-best-way-to-check-if-a-file-exists-in-c-cross-platform), but I'm wondering if there is a better way to do this using standard c++ libs? Preferably without trying to open the file at all. 

Both `stat` and `access` are pretty much ungoogleable. What should I `#include` to use these?