# std::filesystem::operator/(std::filesystem::path)

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< cpp‎ | filesystem‎ | path

friend path operator/( const path& lhs, const path& rhs ); |  | (since C++17)

Concatenates two path components using the preferred directory separator if appropriate (see `operator/=` for details).

Effectively returns path(lhs) /= rhs.

This function is not visible to ordinary unqualified or qualified lookup, and can only be found by argument-dependent lookup when `std::filesystem::path` is an associated class of the arguments. This prevents undesirable conversions in the presence of a using namespace std::filesystem; using-directive.

### Parameters

lhs, rhs | - | paths to concatenate

### Return value

The result of path concatenation.

### Example

Run this code

    #include <filesystem>
    #include <iostream>

    int main()
    {
    #   if defined(_WIN32) // see e.g. stackoverflow.com/questions/142508

        std::filesystem::path p = "C:";

        std::cout << "\"C:\" / \"Users\" / \"batman\" == " << p / "Users" / "batman" << '\n';

    #   else // __linux__ etc

        std::filesystem::path p = "/home";

        std::cout << "\"/home\" / \"tux\" / \".fonts\" == " << p / "tux" / ".fonts" << '\n';

    #   endif
    }

Possible output:

    Windows specific output:
    "C:" / "Users" / "batman" == "C:Users\\batman"

    Linux etc specific output:
    "/home" / "tux" / ".fonts" == "/home/tux/.fonts"

### Defect reports

The following behavior-changing defect reports were applied retroactively to previously published C++ standards.

DR | Applied to | Behavior as published | Correct behavior
--- | --- | --- | ---
LWG 3065 | C++17 | allowed concatenating everything convertible to `path` in the presence of a using-directive | made hidden friend

### See also

append operator/= | appends elements to the path with a directory separator (public member function)

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