单个IF中的多个OR运算符

Question

如何在单个if语句中使用多个OR运算符？我试过这种方式，但有一个错误：

表达式或赋值中的数据类型不兼容。

我看了长度函数的文档，它是LENGTH ( {string | raw-expression | blob-field } [ , type ] )？

这是代码：

DEFINE VARIABLE cMonth AS CHARACTER.
DEFINE VARIABLE cDay AS CHARACTER.
DEFINE VARIABLE cYear AS CHARACTER.

UPDATE cDateFromUser.

cDay = (SUBSTRING(cDateFromUser,1,2)).
cMonth = (SUBSTRING(cDateFromUser,3,2)).
cYear = (SUBSTRING(cDateFromUser,5,4)).

IF (LENGTH(cDay <> 2)) OR (LENGTH(cMonth <> 2)) OR (LENGTH(cYear <> 4)) THEN DO:
    /*Code*/
END.
ELSE DO:
    /*Code*/
END.

Answer 1

语法不在这里。使用以下IF：

IF (LENGTH(cDay) <> 2) OR (LENGTH(cMonth) <> 2) OR (LENGTH(cYear) <> 4) THEN DO: