14.10 The while Statement

The while statement executes an Expression and a Statement repeatedly until the value of the Expression is false.

WhileStatement:
while ( Expression ) Statement
WhileStatementNoShortIf:
while ( Expression ) StatementNoShortIf

The Expression must have type boolean, or a compile-time error occurs.

A while statement is executed by first evaluating the Expression. If evaluation of the Expression completes abruptly for some reason, the while statement completes abruptly for the same reason. Otherwise, execution continues by making a choice based on the resulting value:

If the value of the Expression is false the first time it is evaluated, then the Statement is not executed.