file open cpp

1/ fstream::open / fstream::close
2#include <fstream>      // std::fstream
3
4int main () {
5
6  std::fstream fs;
7  fs.open ("test.txt", std::fstream::in | std::fstream::out | std::fstream::app);
8
9  fs << " more lorem ipsum";
10
11  fs.close();
12
13  return 0;
14}

1#include <iostream>
2#include <fstream>
3using namespace std;
4
5int main () {
6  ofstream myfile;
7  myfile.open ("file.txt");
8  myfile << "Writing to a file.\n";
9  myfile.close();
10  return 0;
11}