static final int EndVal $=-1$;

int double;

int num $=$ console.nextInt$()$;

while $($num $!=$ EndVal$)$

$\{$

double $=$ num $*2$;

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

num $=$ console.nextInt$()$;

$\}$

The above code is an example of a$($n$)$ while loop.

flag$-$controlled

counter$-$controlled

EOF$-$controlled

sentinel$-$controlled