Std::filesystem::path::remove_filename (3) Linux Manual Page

std::filesystem::path::remove_filename – std::filesystem::path::remove_filename

Synopsis

path& remove_filename() (1) (since C++17)
Removes a single generic-format filename component (as returned by filename) from the given generic-format path.
After this function completes, has_filename returns false.

Parameters

(none)

Return value

*this

Exceptions

(none)

Example

// Run this code

#include <iostream>

#include <filesystem>

namespace fs = std::filesystem;
int main()

{
    std::cout << fs::path("foo/bar").remove_filename() << '\n'
              << fs::path("foo/").remove_filename() << '\n'
              << fs::path("/foo").remove_filename() << '\n'
              << fs::path("/").remove_filename() << '\n';
}

Output:

  "foo/"
  "foo/"
  "/"
  "/"

std::filesystem::path::remove_filename (3) Linux Manual Page