/in/foo.cc: In function 'int main()':
/in/foo.cc:7:9: error: expected initializer before 'nll'
  int jr nll
         ^~~
/in/foo.cc:9:7: error: 'jr' was not declared in this scope
  cin>>jr;
       ^~
/in/foo.cc:11:7: error: 'nll' was not declared in this scope
  cin>>nll;
       ^~~