Checking end of file in cobol

This paragraph is called 4 times in the program. Back to top. By using a copy book in the way you are using it, you are changing the logic. Such a rewrite may require anything from changing a few statements to a complete rewrite of the code depending upon the logic.

You need to go to whoever gave you the task, explain the problem, and find out if you should attempt to rewrite the code or accept that using a copy book for file operations in that program will not work. Posted: Mon May 20, am. Open is the first file operation that must be performed. If Open is successful, then only further operations are possible on a file. Only after opening a file, the variables in the file structure are available for processing.

Here, file-name is string literal, which you will use to name your file. Input mode is used for existing files. In this mode, we can only read the file, no other operations are allowed on the file. Output mode is used to insert records in files. If a sequential file is used and the file is holding some records, then the existing records will be deleted first and then new records will be inserted in the file.

It will not happen so in case of an indexed file or a relative file. Extend mode is used to append records in a sequential file. In this mode, records are inserted at the end. If file access mode is Random or Dynamic , then extend mode cannot be used. Read verb is used to read the file records.

The function of read is to fetch records from a file. At each read verb, only one record can be read into the file structure. At each read statement, the file pointer is incremented and hence the successive records are read. INTO clause is optional. This program can be compiled and executed using Live Demo option where it will display all the records present in the file.

Active Oldest Votes. This solves the syntax issues. Simon Sobisch Simon Sobisch 5, 13 13 silver badges 35 35 bronze badges. Khalid Mahmood Khalid Mahmood 31 1 1 silver badge 2 2 bronze badges. Sign up or log in Sign up using Google. Sign up using Facebook. Sign up using Email and Password. Post as a guest Name. Email Required, but never shown.

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