COBOL处理文件示例与技术解答

COBOL语言在处理文件时是非常强大的，它能够读取、写入和处理各种类型的文件。这个示例代码演示了如何使用COBOL读取一个文件的内容并进行简单的处理，例如计算总和或者过滤数据。

IDENTIFICATION DIVISION.
PROGRAM-ID. FILE-HANDLING.

ENVIRONMENT DIVISION.
INPUT-OUTPUT SECTION.
FILE-CONTROL.
SELECT INPUT-FILE ASSIGN TO 'input.txt'.
DATA DIVISION.
FILE SECTION.
FD INPUT-FILE.
01 INPUT-RECORD.
   05 NAME        PIC X(20).
   05 AMOUNT      PIC 9(5)V99.

WORKING-STORAGE SECTION.
01 TOTAL-AMOUNT   PIC 9(7)V99 VALUE 0.

PROCEDURE DIVISION.
MAIN-PROCESS.
    OPEN INPUT INPUT-FILE.
    READ INPUT-FILE
        AT END
            GO TO END-OF-FILE.
    PERFORM PROCESS-RECORD.
    ADD AMOUNT TO TOTAL-AMOUNT.
    DISPLAY "Name: " NAME "Amount: " AMOUNT.
    GO TO MAIN-PROCESS.
END-OF-FILE.
    DISPLAY "Total Amount: " TOTAL-AMOUNT.
    CLOSE INPUT-FILE.
    STOP RUN.

PROCESS-RECORD.
    ... // 这里可以添加特定的处理逻辑，例如数据过滤或者转换

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