foo.c: In function 'main':
foo.c:29:19: warning: field precision specifier '.*' expects argument of type 'int', but argument 2 has type 'long long int' [-Wformat=]
   29 |         printf("%.*lf",k,a);
      |                 ~~^~~  ~
      |                   |    |
      |                   int  long long int

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