/in/foo.cc: In function 'int main()':
/in/foo.cc:11:15: warning: format '%s' expects argument of type 'char*', but argument 2 has type 'char (*)[1200]' [-Wformat=]
  scanf("%s",&s);
               ^
/in/foo.cc:46:8: warning: 'c' may be used uninitialized in this function [-Wmaybe-uninitialized]
  printf("%c=%.3lf\n",c,ans);
  ~~~~~~^~~~~~~~~~~~~~~~~~~~