#include <stdio.h>
#include <math.h>
#include <stdlib.h>

int main(){

   double p;
   double a = 16;
   double b = 54;
   p = a / b;

   printf("%.10f\n", p);
   printf("%.10g\n", p);
   printf("%.10e\n", p);
   printf("%10f\n", p);
   printf("%10g\n", p);
   printf("%10e\n", p);
   return 0;
}