z/OS COBOL程序中实现数据集读写的示例代码及技术解答

该示例代码演示了在z/OS上使用COBOL编程语言进行数据集读写的方法。通过该代码，可以了解在主机环境中如何有效处理数据。程序实现了对顺序文件的读取和写入操作，包括打开文件、读取记录、写入记录和关闭文件等步骤。

IDENTIFICATION DIVISION.
PROGRAM-ID. DataSetReadWrite.

DATA DIVISION.
FILE SECTION.
FD InputFile.
01 InputRecord.
   05 Name          PIC X(30).
   05 Age           PIC 9(3).

FD OutputFile.
01 OutputRecord.
   05 Name          PIC X(30).
   05 Age           PIC 9(3).

WORKING-STORAGE SECTION.
01 EndOfFile      PIC X(1) VALUE 'N'.

PROCEDURE DIVISION.
   OPEN EXTEND InputFile.
   OPEN OUTPUT OutputFile.

   PERFORM UNTIL EndOfFile = 'Y'
      READ InputFile
         AT END SET EndOfFile TO 'Y'
         NOT AT END
            PERFORM ProcessRecord
      END-READ
   END-PERFORM.

   CLOSE InputFile.
   CLOSE OutputFile.
   STOP RUN.

ProcessRecord.
   MOVE Name of InputRecord TO Name of OutputRecord.
   MOVE Age of InputRecord TO Age of OutputRecord.
   WRITE OutputRecord.

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