class output $\{$

public static void main$($String args$[]])$

$\{$

double a$,$ b$,$ c;

$a=\frac{3\mathrm{.}0}{}$;

$b=\frac{}{4.}$;

$c=\frac{0}{}*$;

System.out.println$($a$)$;

System.out.println$($b$)$;

System.out.println$($c$)$;

$\}$

$\}$