/in/foo.c: In function 'main':
/in/foo.c:4:2: error: unknown type name 'rdhbtdyrtyeri7o9o'
    4 | {rdhbtdyrtyeri7o9o
      |  ^~~~~~~~~~~~~~~~~
/in/foo.c:5:12: error: expected declaration specifiers or '...' before string constant
    5 |     printf("hello, world\n");
      |            ^~~~~~~~~~~~~~~~