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文件File1, 有三个成员分别是Mbr1,Mbr2,Mbr3.现在我们想在一个程序里处理这三个成员而不使用ovrdbf。代码如下:
- FFile1 if e Disk Extfile(FilNam) ExtMbr(MbrNam)
- F UsrOpn
- *
- D FilNam s 10a Inz
- D MbrNam s 10a Inz
- *
- * Process first member data.
- *
- C Eval FilNam = 'FILE1'
- C Eval MbrNam = 'MBR1'
- *
- C Open File1
- C Read File1
- *
- C DoW Not %Eof(File1)
- C
- C
- C
- C EndDo
- C Close File1
- *
- * Process second member data.
- *
- C Eval FilNam = 'FILE1'
- C Eval MbrNam = 'MBR2'
- *
- C Open File1
- C Read File1
- *
- C DoW Not %Eof(File1)
- C
- C
- C
- C EndDo
- C Close File1
- *
- * Process Third member data.
- *
- C Eval FilNam = 'FILE1'
- C Eval MbrNam = 'MBR3'
- *
- C Open File1
- C Read File1
- *
- C DoW Not %Eof(File1)
- C
- C
- C
- C EndDo
- C Close File1
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