variable file name for fstream

[shadowvillian]

How would you go about making it so the user can enter in the name of the file to open? here is my code but it doesn't like line 16.

#include <iostream>
#include <fstream>
#include <string>

using namespace std;

int main()
{
    ifstream DataFile;
    string FileNameInput;
    string DataFromFile;

    cout << "Enter the name of the file you would like to access data from: " << endl;
    getline(cin, FileNameInput);

    DataFile.open(FileNameInput); //error at this line

    if(DataFile.is_open())
    {
        cout << "File Found." << endl;
        cout << "Reading File..." << endl;

        cin.get();

        while(DataFile.good())
        {
            DataFile >> DataFromFile;
        }
    }

    else
    {
        cout << "File not found. Exiting program..." << endl;
        return 0;
    }

    cout << "Printing Data..." << endl;
    cout << DataFromFile << endl;

    DataFile.close();

    return 0;
}

[hamsterman]

fstream::open takes a const char* and you give it an std::string. You can get the const char* to the charachters of the string with the c_str() method. DataFile.open(FileNameInput.c_str());

[shadowvillian]

Oh yeah I fogot about that