Executes a series of statements as long as a given condition is TRUE.

 

When the condition  is TRUE, all statements are executed until the ENDWHILE statement is encountered.  When ENDWHILE is reached, control then returns to the WHILE  statement where the condition is checked again.   If condition is still TRUE, the process is repeated.  When the condition is not TRUE, execution resumes with the statement following the ENDWHILE statement.

 

Unlike the FOR statement, the WHILE statement evaluates condition on every loop pass.

 

 

 

 

 

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