/in/foo.cc:48:32: warning: multi-character character constant [-Wmultichar]
  while(ch!='\r'&&ch!='\n'&&ch!='\r\n')
                                ^~~~~~
/in/foo.cc: In function 'int lev(char)':
/in/foo.cc:21:1: warning: control reaches end of non-void function [-Wreturn-type]
 }
 ^