执行下列命令后： STUDNAME=′ZHANGSANFENG′ CHARVAR=′STUDNAME′ ?SUBSTR(&CHARVAR,1,4) 输出的值为（　）. -题库考试答案搜索网

执行下列命令后： STUDNAME=′ZHANGSANFENG′ CHARVAR=′STUDNAME′ ?SUBSTR(&CHARVAR,1,4) 输出的值为（　）.

单选题

2022-02-26 20:07

A、CHAR
B、出错
C、ZHAN
D、STUD

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正确答案

C

试题解析

标签： CMS专题专科计算机信息管理

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