C++ PlaySound() giving errors

I was trying to use the PlaySound(); function in C++. I want to take user input on what file they want to play. But when I put the variable in PlaySound(); It gives me an error. Here is the code,

#include <string>
#include <Windows.h>
using namespace std;
int main()
{
    cout << "Enter song name...\nMake sure the song is in the same folder as this program\n";
    string filename;
    getline(cin, filename);
    cout << "Playing song...\n";
    bool played = PlaySound(TEXT(filename), NULL, SND_SYNC);


    return 0;
}

Error, identifier "Lfilename" is undefined 'Lfilename': undeclared identifier I am using Microsoft Visual Studio 2019.

You can't use the TEXT() macro with a variable, only with a compile-time character/string literal. You need to use the std::string::c_str() method instead.

Also, the fact that TEXT() is adding the L prefix to the specified identifier means you are compiling your project for Unicode (ie UNICODE is defined during preprocessing), which means PlaySound() (being a TCHAR-based macro itself) will map to PlaySoundW(), which expects a wide strong as input not a narrow string. So you need to call PlaySoundA() instead to match your use of std::string.

Try this:

#include <string>
#include <Windows.h>
using namespace std;

int main() {
    cout << "Enter song name...\nMake sure the song is in the same folder as this program\n";
    string filename;
    getline(cin, filename);
    cout << "Playing song...\n";
    bool played = PlaySoundA(filename.c_str(), NULL, SND_SYNC);

    return 0;
}

Alternatively, use std::wstring instead, since Windows APIs prefer Unicode strings (ANSI-based APIs call the Unicode APIs internally):

#include <string>
#include <Windows.h>
using namespace std;

int main() {
    wcout << L"Enter song name...\nMake sure the song is in the same folder as this program\n";
    wstring filename;
    getline(wcin, filename);
    wcout << L"Playing song...\n";
    bool played = PlaySoundW(filename.c_str(), NULL, SND_SYNC);

    return 0;
}