foo.c: In function 'main':
foo.c:33:14: warning: unknown conversion type character ' ' in format [-Wformat=]
   33 |     scanf(" % d & d % d", &n1, &n2);
      |              ^
foo.c:33:22: warning: unknown conversion type character ' ' in format [-Wformat=]
   33 |     scanf(" % d & d % d", &n1, &n2);
      |                      ^
foo.c:33:11: warning: too many arguments for format [-Wformat-extra-args]
   33 |     scanf(" % d & d % d", &n1, &n2);
      |           ^~~~~~~~~~~~~~

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