/in/foo.c: In function 'main':
/in/foo.c:24:37: warning: spurious trailing '%' in format [-Wformat=]
   24 |                 printf("%.2f+%.2fi\n%",realpart,imagpart);
      |                                     ^
/in/foo.c:25:37: warning: spurious trailing '%' in format [-Wformat=]
   25 |                 printf("%.2f-%.2fi\n%",realpart,imagpart);
      |                                     ^
/in/foo.c: At top level:
/in/foo.c:28:9: error: expected identifier or '(' before 'return'
   28 |         return 0;
      |         ^~~~~~