Problem in writing file in binary mode

[sheeraz_am]

Hi,
    I am writing an object in a file using binary mode, in these two statements.
   
   fstream qfile(ios::out, ios::binary);
   qfile.write( reinterpret_cast<char*>(&qObject) , sizeof(qObject) );
   
   My Question is that:
                   Why it is necessary to type cast the object to  char* ? any reason.
                             
                                             Thanks

[Michael Hall]

Well, the simple answer is a char* is what the function takes. Binary mode works that way. Everything a is just considered a sequence of bytes, unlike text mode.

Mike

[sheeraz_am]

Oh thanks