/in/foo.cc: In function 'void gett(char*)':
/in/foo.cc:12:7: warning: variable 'b' set but not used [-Wunused-but-set-variable]
  char b[1000000+1];
       ^
/in/foo.cc:13:10: warning: unused variable 'c' [-Wunused-variable]
     char c[1000000+1];
          ^