// Reading a file

​

#include <iostream>

#include <fstream>

#include <string>

​

int main() 

{

    std::string line;

​

    std::ifstream file("example.txt");

    if(file.is_open())

    {

        while(getline(file, line))

        {

            std::cout << line << '\n';

        }

        file.close();

    }

    else std::cout << "Unable to open file";

​

    return 0;

}

#include <fstream>

#include <string>

​

int main(int argc, char** argv)

{

​

  std::ifstream ifs("myfile.txt");

  std::string content( (std::istreambuf_iterator<char>(ifs) ),

                       (std::istreambuf_iterator<char>()    ) );

​

  return 0;

}

#include <iostream>

#include <fstream>

using namespace std;

​

int main () {

  ofstream myfile;

  myfile.open ("file.txt");

  myfile << "Writing to a file.\n";

  myfile.close();

  return 0;

}

// basic file operations

// credits: cplusplus.com

#include <iostream>

#include <fstream>

using namespace std;

​

int main () {

  ofstream myfile;

  myfile.open ("example.txt");

  myfile << "Writing this to a file.\n";

  myfile.close();

  return 0;

}

fstream  afile;

afile.open("file.dat", ios::out | ios::in );

​