When processing multiple files in a COBOL program, you encounter an exception in one file but want to continue processing the other files without interruption. How can you achieve this?
- Implement exception handling with the EXIT PROGRAM statement
- Set the FILE STATUS to 'OK' manually
- Use the CONTINUE statement after error handling
- Use the NOT ON EXCEPTION clause in the file control entry
To continue processing other files without interruption in case of an exception in one file, you can use the NOT ON EXCEPTION clause in the file control entry. This allows the program to skip the file that has an exception and continue processing the next files.
You are developing a COBOL program to manage employee records, and you need to store the names of all employees. Which aspect of the OCCURS clause would be most relevant for this task?
- Depending On
- Grouping
- Indexing
- Non-indexed
In this scenario, the most relevant aspect of the OCCURS clause is non-indexed. It allows you to group similar data without indexing, which is suitable for storing names where direct access is not required, and sequential access suffices.
In COBOL, what are the main categories of data items defined in the Data Division?
- Elementary and Group
- Input and Output
- Local and Global
- Numeric and Alphabetic
The main categories of data items in the COBOL Data Division are Elementary and Group items. Elementary items represent atomic data, while Group items are collections of other items.
In COBOL, what is the format of the current date and time when stored in the CURRENT-DATE special register?
- DD/MM/YYYY HH:MM:SS
- HH:MM:SS DD/MM/YYYY
- MM/DD/YYYY HH:MM:SS
- YYYY-MM-DD HH:MM:SS
In COBOL, the CURRENT-DATE special register typically stores the current date and time in the format YYYY-MM-DD HH:MM:SS. It follows the ISO 8601 standard for date and time representation.
In COBOL, how can you format a date in a specific way for displaying to the user or writing to a file?
- FUNCTION CURRENT-DATE
- FUNCTION DATE-ADD
- FUNCTION FORMAT-TIME
- FUNCTION NUMVAL
To format a date in COBOL for display or file output, the FUNCTION FORMAT-TIME is used. It allows programmers to define the desired format for presenting date and time information.
The _____ keyword in COBOL is used to pass data from the calling program to the subprogram.
- ACCEPT
- MOVE
- RETURN
- USING
The USING keyword in COBOL is used to pass data from the calling program to the subprogram. It allows for the exchange of data between the calling program and the called subprogram, facilitating communication and data sharing.
In COBOL, what is the significance of the CONTINUE statement in error handling?
- It indicates the end of the program
- It is used to ignore errors and continue with the next statement
- It skips the remaining statements in the current iteration and continues with the next iteration of the loop
- It terminates the program immediately
In error handling, the CONTINUE statement is used to ignore errors and continue with the next statement. It helps in gracefully handling errors without terminating the program abruptly.
What is the difference between a record and a structure in COBOL?
- A record in COBOL refers to a logical unit of data, typically representing a complete set of related fields. A structure, on the other hand, is a collection of data items, including records, organized in a specific way.
- A record is a collection of fields with similar attributes, while a structure is a set of related records grouped together.
- A structure in COBOL is synonymous with a record.
- Records are used for sequential processing, whereas structures are used for random access processing.
In COBOL, a record represents a logical unit of data often composed of related fields. A structure is a more general term referring to an organized collection of data items, which may include records. The difference lies in the abstraction level and organization of data.
The _____ statement is used to invoke a subprogram in COBOL.
- ACCEPT
- CALL
- LINKAGE
- PERFORM
In COBOL, the CALL statement is used to invoke a subprogram. It transfers control to the specified subprogram and executes the statements within it.
How does the PERFORM UNTIL statement differ from the PERFORM VARYING statement in COBOL?
- Both statements are identical and can be used interchangeably
- PERFORM UNTIL executes the loop until a condition is true, while PERFORM VARYING iterates over a range of values
- PERFORM UNTIL is used for nested loops, and PERFORM VARYING is used for single loops
- PERFORM VARYING executes the loop until a condition is true, while PERFORM UNTIL iterates over a range of values
The PERFORM UNTIL statement in COBOL executes the loop until a specified condition is true, whereas PERFORM VARYING iterates over a range of values for a loop variable. They serve different purposes in controlling loop execution.