Error: operator>> not defined for basic_istream<char,char_tr

I wonder if any of you have experience with this or know where I messed up.

The error message:
Error: operator>> not defined for basic_istream<char,char_traits > onedhistocut.c:114:

Related part of the code:
in.open(“mpvvsdate.txt”);
in1.open(“mpvvsdate1sig.txt”);
in>>day>>mpv>>error>>endl;
in1 << day<<" “<<mpv<<” "<<error<<endl;
in.close();
in1.close();

I have #include and using namespace std;

After doing some google search I found this : root.cern.ch/root/roottalk/roottalk03/2155.html
It is possible that i am missing cintdll? I tried installing it:
[MacBook-Pro:~/Documents/root] % cd $ROOTSYS
[MacBook-Pro:~/Documents/root] % make all-cintdlls
make: Nothing to be done for all-cintdlls'. [MacBook-Pro:~/Documents/root] % make cintdlls make: *** No rule to make targetcintdlls’. Stop.
[MacBook-Pro:~/Documents/root] % gmake all-cintdlls
make: Nothing to be done for all-cintdlls'. [MacBook-Pro:~/Documents/root] % gmake cintdlls make: *** No rule to make targetcintdlls’. Stop.

it seems like it won’t let me install cintdlls? I wonder if that is the problem and if anyone can give me some help. Thanks in advance.

in>>day>>mpv>>error;