Programming

void Buffer::writeIntoFile(std::string name, int length, std::string text){
    int fd;
    FILE *fp;
    std::ofstream ofs;
    if((fd = open(name.c_str(),(O_CREAT|O_WRONLY|O_RDONLY))) < 0){
      cout << "Error Opening File\n";
    }
    if((fp = fdopen(fd,"a")) < 0){
      cout << "Error\n";
      close(fd);
    }
    //Create a Filebuffer from File
    __gnu_cxx::stdio_filebuf<char> fb(fp,std::ios::out);
    ofs.std::ios::rdbuf(&fb);
    ofs << text<< endl;
    ofs.close();
}

fp = fopen(name, "a");

fd = open(name, O_WRONLY | O_APPEND);

fp = fopen(name, "a+");

fd = open(name, O_RDWR | O_APPEND);