Date: 2025apr3 Update: 2026sep16 Language: C++ Q. C++: Get the basename of an absolute filename A. With C++17 or later use std::filesystem() like this:

#include <filesystem> std::string basename(const std::string absfilename) { return std::filesystem::path(absfilename).filename(); }

Example Use:

int main() { const char *absolute = "/etc/NetworkManager/system-connections/MyConnection.nmconnection"; const std::string bn = basename(absolute); printf("The basename of %s is %s\n", absolute, bn.c_str()); }

Output:

The basename of /etc/NetworkManager/system-connections/MyConnection.nmconnection is MyConnection.nmconnection