while do-endwhile
SYNTAX:do while语句怎么用
WHILE ( bool_expr ) DO
[ Statement_block ]
ENDWHILE
� bool_expr - A Boolean expression.
DESCRIPTION:
As long as the bool_expr evaluates to TRUE, the Statement_block is executed. Before each execution of the Statement_block, the bool_expr is evaluated. If the bool_expr evaluates to FALSE when execution control reaches the WHILE statement, the Statement_block will never execute.
EXAMPLE:
ii = check_input( )
while (ii <= 0) do
ii = check_input( )
endwhile

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