Answer
Get a value for x
While x $\ne$ 999 do
$\ \ \ \ \ \ $ Set the value of a to $x^{2}$
$\ \ \ \ \ \ $ Set the value of b to $sin(x)$
$\ \ \ \ \ \ $ Set the value of c to $1/x$
$\ \ \ \ \ \ $ Print the values of a, b, and c
$\ \ \ \ \ \ $ Get a value for x
End of the loop
Stop
Work Step by Step
Get a value for x
While x $\ne$ 999 do
$\ \ \ \ \ \ $ Set the value of a to $x^{2}$
$\ \ \ \ \ \ $ Set the value of b to $sin(x)$
$\ \ \ \ \ \ $ Set the value of c to $1/x$
$\ \ \ \ \ \ $ Print the values of a, b, and c
$\ \ \ \ \ \ $ Get a value for x
End of the loop
Stop