foo.c: In function 'main':
foo.c:17:22: warning: unknown conversion type character '\x0a' in format [-Wformat=]
   17 |         printf("%.2f%\n", y1);
      |                      ^~
foo.c:18:22: warning: unknown conversion type character '\x0a' in format [-Wformat=]
   18 |         printf("%.2f%\n", y2);
      |                      ^~
foo.c:19:22: warning: unknown conversion type character '\x0a' in format [-Wformat=]
   19 |         printf("%.2f%\n", y3);
      |                      ^~
foo.c:20:22: warning: unknown conversion type character '\x0a' in format [-Wformat=]
   20 |         printf("%.2f%\n",y4);
      |                      ^~

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