/in/foo.c: In function 'main':
/in/foo.c:22:51: warning: format '%f' expects a matching 'double' argument [-Wformat=]
   22 |                         printf("%.2f\n-%.2fi\n,%.2f\n+%.2fi\n",x1,x2);
      |                                                ~~~^
      |                                                   |
      |                                                   double
/in/foo.c:22:58: warning: format '%f' expects a matching 'double' argument [-Wformat=]
   22 |                         printf("%.2f\n-%.2fi\n,%.2f\n+%.2fi\n",x1,x2);
      |                                                       ~~~^
      |                                                          |
      |                                                          double