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最新文章列表
Harvesting Service Orientation
In order to get optimal results, it's worthwhile to look back every now and then, and ask the question: "What did we learn?" In our days of Red Queen-talk, the paradox is that effective learn ...
Perform.....until.......
PERFORM UNTIL StudentRecord = HIGH-VALUES
DISPLAY StudentRecord
READ StudentRecords
AT END MOVE HIGH-VALUES TO StudentRecord
END-READ
END-PERFORM
上段代码的perform until。读perform until的时候,先要看清楚end- ...
Cobol of MF
现在做Cobol的大多数都是在做MF维护吧,一般是针对银行,超市,电信这样的数据量处理很大的项目,不过,由于Cobol存在了几十年之久,所以以前那批做Cobol程序的人差不多都快退休了,对于那些信息化比较早的发达国家而言,需要一批人来维护他们的系统,这就是Cobol存在的主要目的之一吧。这其中也以维护为主要吧。
Program maintenance主要包括以下几方面:
引用
1. Changing ...
Tables and the PERFORM ... VARYING
引用A table is a contiguous sequence of memory locations called elements, which all have the same name, and are uniquely identified by that name and by their position in the sequence.
Cobol中的table相当于其他语言 ...
Simple iteration with the PERFORM verb
COBOL only has one iteration construct; PERFORM.But the PERFORM has several variations.
Let me introduce threes variations as follows:
1,PERFORM..VARYING
It is equivalent of the FOR.
A Paragraph is ...
Introduction to COBOL
COBOL uses structural concepts normally associated with English prose such as section, paragraph, sentence and so on.
==============================================================
Program--->Divis ...