foo.c: In function 'main':
foo.c:13:21: warning: unknown conversion type character 'I' in format [-Wformat=]
   13 |         printf("%0.3If",x);
      |                     ^
foo.c:13:16: warning: too many arguments for format [-Wformat-extra-args]
   13 |         printf("%0.3If",x);
      |                ^~~~~~~~

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