WHILE (logical) statement;
WHILE (logical) { statement-group; }
Note that all statements must be terminated with semicolons (;),
but there is no semicolon after a closing brace.
The condition is re-evaluated in each iteration.
The statement or group of statements following the WHILE is
repeated as long as the condition is satisfied.
Of course some variable(s) must be changed within the WHILE group
to allow the loop to terminate.