Difference between revisions of "CPP/IO/FileOutput"

#include <iostream>
#include <fstream>
 
void Overwrite();
void Append();
 
int main(int argc, char *argv[])
{
  Overwrite();
  Append();
  return 0;
}
 
void Overwrite()
{
  //overwrite test.txt
  std::string Filename = "test.txt";
  std::ofstream fout(Filename.c_str());
 
  fout << 1 << std::endl << 2 << std::endl;
 
  fout.close();
  /*
  or
  ofstream fout;
  fout.open(Filename);
  */
}
 
void Append()
{
  std::string Filename = "append.txt";
  std::ofstream fout(Filename.c_str(), std::ios::app);
 
  fout << 1 << std::endl << 2 << std::endl;
 
  fout.close();
}