std::experimental::filesystem::path:: stem

From cppreference.com
path stem ( ) const ;
(filesystem TS)

Returns the filename identified by the path stripped of its extension.

Returns the substring from the beginning of filename() up to and not including the last period ( . ) character.

If the filename is one of the special filesystem components dot or dot-dot , or if it has no periods, the function returns the entire filename() .

Parameters

(none)

Return value

The stem of the filename identified by the path.

Exceptions

May throw implementation-defined exceptions.

Example

#include <experimental/filesystem>
#include <iostream>
namespace fs = std::experimental::filesystem;
 
int main()
{
    std::cout << fs::path("/foo/bar.txt").stem() << '\n'
              << fs::path("/foo/.bar").stem() << '\n';
 
    for (fs::path p = "foo.bar.baz.tar"; !p.extension().empty(); p = p.stem())
        std::cout << p.extension() << '\n';
}

Output:

"bar"
""
".tar"
".baz"
".bar"

See also

returns the filename path component
(public member function)
returns the file extension path component
(public member function)