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# std::experimental::filesystem::path::c_str, std::experimental::filesystem::path::native, std::experimental::filesystem::path::operator string_type()

From cppreference.com
< cpp‎ | experimental‎ | fs‎ | path

const value_type* c_str() const; | (1) | (filesystem TS)
const string_type& native() const; | (2) | (filesystem TS)
operator string_type() const; | (3) | (filesystem TS)

Accesses the native path name as a character string.

1) Equivalent to native().c_str().
2) Returns the native string representation of the pathname by reference.
3) Returns the native string representation of the pathname by value.

### [edit] Parameters

(none)

### [edit] Return value

The native string representation of the pathname, using native syntax, native character type, and native character encoding. This string is suitable for use with OS APIs.

### [edit] Exceptions

1,2)
`noexcept` specification:
noexcept

### [edit] Notes

The conversion function (3) is provided so that standard file-opening APIs that accept std::basic_string file names, such as the std::ifstream constructor, can use pathnames with no changes to code:

    fs::path p = "/tmp/text.txt";
    std::ifstream f(p);

### [edit] Example

Run this code

    #include <cstdio>
    #include <clocale>
    #include <fstream>
    #include <iostream>
    #include <experimental/filesystem>
    namespace fs = std::experimental::filesystem;

    int main()
    {
        std::setlocale(LC_ALL, "en_US.utf8");
        std::locale::global(std::locale("en_US.utf8"));

        fs::path p = fs::u8path(u8"要らない.txt");

        // native string representation can be used with OS APIs
        std::ofstream(p) << "File contents"; // this uses operator string()
        if(std::FILE* f = std::fopen(p.c_str(), "r")) {
            int ch;
            while((ch=fgetc(f))!= EOF) putchar(ch);
            std::fclose(f);
        }

        // multibyte and wide representation can be used for output
        std::cout.imbue(std::locale());
        std::cout << "\nFile name in narrow multibyte encoding: "
                  << p.string() << '\n';

        std::wcerr.imbue(std::locale());
        std::wcerr << "File name in wide encoding: "
                   << p.wstring() << '\n';

        fs::remove(p);
    }

Output:

    File contents
    File name in narrow multibyte encoding: 要らない.txt
    File name in wide encoding: 要らない.txt

### [edit] See also

string wstring u8string u16string u32string | returns the path in native pathname format converted to a string (public member function) [edit]
generic_string generic_wstring generic_u8string generic_u16string generic_u32string | returns the path in generic pathname format converted to a string (public member function) [edit]

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