Question

I want the following values to be written into the file using ostream???

int main ()
{
  FILE * pFile;
  pFile = fopen ("myfile.txt","w");
  if (pFile!=NULL)
  {
    fputs ("fopen example",pFile);
    fclose (pFile);
  }
  pFile<< "r "<<" " <<"ggjjsss" <<'_'<<"gggjj"<< " " << "HLLO " <<endl;
}

I am getting the following error..
error: invalid operands of types ‘FILE*’ and ‘const char [3]’ to binary ‘operator<<‘

Answer 1

Since you are dealing with FILE, I would say it’s an ofstream error rather than ostream error. 🙂 FILE is a C-style file i/o for which operator << is not overloaded.

You should use ofstream object for which the operator << is overloaded in the library.

#include<fstream>

ofstream File("myfile.txt");
File<< "r "<<" " <<"ggjjsss" <<'_'<<"gggjj"<< " " << "HLLO " <<endl;