tuple in c++ with string elements and save it to a file

I want to create a std::tuple that contains int, string, string, and bool and save the information in a file. I cannot get the string elements. My code is the following

#include <tuple>
#include <iostream>
#include <string>
#include <fstream>
using namespace std;

int main ()
{
    int a;

    ofstream myfile;
    myfile.open("lischen.txt");
    tuple<int,string,strng,bool> tup (10,'lis','C:/',false);
    a=get<0>(tup);
    cout << "foo contains: ";
    cout << std::get<0>(tup) << ' ';
    myfile << "Writing this to a file.\n";
    myfile << std::get<0>(tup) << ' ';
    myfile << std::get<1>(tup) << ' ';
    myfile << std::get<2>(tup) << ' ';
    myfile << std::get<3>(tup) << ' ';
    myfile.close();
    return 0;
}

The error is the following 13 56 C:\Users\rafae\Desktop\lis.cpp [Error] invalid conversion from 'const char*' to 'char' [-fpermissive]