/in/foo.cc: In function 'int main()':
/in/foo.cc:5:12: error: expected initializer before '.' token
     int k,l.r;
            ^
/in/foo.cc:6:10: error: 'l' was not declared in this scope
  cin>>k>>l>>r;
          ^
/in/foo.cc:6:13: error: 'r' was not declared in this scope
  cin>>k>>l>>r;
             ^