wav player

#include<iostream>
#include<windows.h>    //used for PlaySound function
#include<fstream>    //used for file handling
#include <list>
#include <algorithm>

#define MAX 100
using namespace std;

list<string> my_audio_list;
list<string>::iterator it;
void add_list()
{
	int choice = 1;
	while(choice)
	{
		string audio;
		cin >> audio; // accept audio
		my_audio_list.push_back(audio);
		cout << "want to add song\n"
			<< "press one else 0::  ";
			cin >> choice;
	}
}
void show_list()
{
	cout << "your music list is::\n";
	for ( it = my_audio_list.begin() ; it!=my_audio_list.end(); ++it)
	{
		cout << "\t" << *it <<endl;
	}
}

string play_wav()
{
	string audiofile;
	audiofile = my_audio_list.front();
	my_audio_list.pop_front();
	return audiofile;
}
int main()
{
  char audiofile_char[50];
  string audiofile_str;
  char audio[100];
  fstream fp;
  
  //Enter name of a 'wav' audio file with .wav extension and make sure it is present in the folder where your program is saved.
	cout << "enter number of song to be added::  ";
	add_list();
	show_list();
	audiofile_str = play_wav();
  fp.open(audiofile_str.c_str(), ios::in);
    if (fp != NULL)
    {	cout << "audio playing : \n" ;
  		PlaySound(audiofile_str.c_str(), NULL, SND_SYNC);
  	}
  else
  	{
    cout<<"\nAudio file couldn't run..!!";
    cout<<"\nCheck the following things: \n "
	<<"1. Your file is an original .wav audio file. \n "
	<<"2. You have mentioned '.wav' extension in the name of file. "
	<<"\n 3. It is present in the folder where your program is saved.";
  	}  
  
  fp.close();
  
  return 0;
}