/in/foo.cc: In function 'int main()':
/in/foo.cc:28:24: warning: 'now' may be used uninitialized [-Wmaybe-uninitialized]
   28 |             rope.insert(now, ch);
      |             ~~~~~~~~~~~^~~~~~~~~
/in/foo.cc:11:12: note: 'now' was declared here
   11 |     int t, now;
      |            ^~~