/in/foo.c:9:9: error: expected declaration specifiers or '...' before string constant
    9 |  printf("%d is a primer!",n);
      |         ^~~~~~~~~~~~~~~~~
/in/foo.c:9:27: error: unknown type name 'n'
    9 |  printf("%d is a primer!",n);
      |                           ^
/in/foo.c:10:2: error: expected identifier or '(' before 'return'
   10 |  return 0;}
      |  ^~~~~~
/in/foo.c:10:11: error: expected identifier or '(' before '}' token
   10 |  return 0;}
      |           ^