foo.cc: In function 'int main()':
foo.cc:20:15: warning: unknown conversion type character '\x0a' in format [-Wformat=]
   20 | printf("%.2lf%\n%.2lf%\n%.2lf%\n%.2lf%\n",100.0*s4/m,100.0*s3/m,100.0*s2/m,100.0*s1/m);
      |               ^~
foo.cc:20:23: warning: unknown conversion type character '\x0a' in format [-Wformat=]
   20 | printf("%.2lf%\n%.2lf%\n%.2lf%\n%.2lf%\n",100.0*s4/m,100.0*s3/m,100.0*s2/m,100.0*s1/m);
      |                       ^~
foo.cc:20:31: warning: unknown conversion type character '\x0a' in format [-Wformat=]
   20 | printf("%.2lf%\n%.2lf%\n%.2lf%\n%.2lf%\n",100.0*s4/m,100.0*s3/m,100.0*s2/m,100.0*s1/m);
      |                               ^~
foo.cc:20:39: warning: unknown conversion type character '\x0a' in format [-Wformat=]
   20 | printf("%.2lf%\n%.2lf%\n%.2lf%\n%.2lf%\n",100.0*s4/m,100.0*s3/m,100.0*s2/m,100.0*s1/m);
      |                                       ^~

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