In a COBOL program that processes customer orders, how would you implement error reporting to notify administrators of invalid order entries?
- Sending email notifications through an external module
- Using the DISPLAY statement to show errors on the screen
- Utilizing the COBOL CALL statement
- Writing error messages to a flat file
To notify administrators of invalid order entries, utilizing an external module to send email notifications is a suitable approach. This allows for immediate communication and alerts administrators to take appropriate actions regarding the invalid orders.
In COBOL, which statement is used to add two numeric values together?
- ADD
- DIVIDE
- MULTIPLY
- SUBTRACT
The ADD statement in COBOL is used to add two or more numeric values together. It supports various formats and can be used for both integer and decimal arithmetic operations.
The FUNCTION _______ intrinsic function is utilized to obtain the integer portion of a numeric value.
- FLOOR
- INTEGER
- TRUNC
- ROUND
The correct option is INTEGER. The INTEGER intrinsic function in COBOL is used to obtain the integer portion of a numeric value by truncating the fractional part.
In a COBOL application, you are required to validate user input for a date field. Which intrinsic function can help you ensure that the entered date is valid?
- FUNCTION DATE-VALIDATE
- FUNCTION NUMCHECK
- FUNCTION NUMVAL
- FUNCTION VALIDATE
The FUNCTION DATE-VALIDATE intrinsic function in COBOL helps validate user input for date fields, ensuring that the entered date is in a valid format. It is useful for maintaining data integrity in date-related operations.
The CLOSE verb in COBOL can be used with the ________ phrase to handle file closing errors.
- ERROR
- EXCEPTION
- REPORT
- STATUS
The CLOSE verb in COBOL can be used with the EXCEPTION phrase to handle file closing errors. It provides a way to manage errors that may occur during the closing of a file.
Why is it essential to handle duplicate records properly in COBOL programs?
- To prevent data inconsistencies and errors
- To reduce file storage requirements
- To simplify program logic
- To speed up program execution
Proper handling of duplicate records in COBOL programs is crucial to prevent data inconsistencies and errors. Incorrect handling may lead to inaccurate results and affect the integrity of the stored data.
What is the primary purpose of using sequential file processing in COBOL?
- To directly access any record in the file
- To perform arithmetic operations on file records
- To randomly access records based on a key
- To read and process records in a specific order from start to end
Sequential file processing in COBOL involves reading and processing records in a specific order, typically from the beginning to the end of the file. This is useful when the order of data matters, such as in reports or batch processing.
What is the purpose of using SORT and MERGE operations in COBOL when working with files containing duplicate records?
- Arrange data in a specific order based on key fields
- Combine multiple files into a single file
- Remove duplicates automatically
- Simplify file input/output operations
SORT and MERGE operations in COBOL are used to arrange data in a specific order based on key fields. This is particularly useful when dealing with files containing duplicate records, as it helps in efficiently locating and managing duplicates during processing.
In COBOL, what operator is used for multiplication?
- *
- +
- -
- /
In COBOL, the asterisk (*) operator is used for multiplication. For example, "MULTIPLY operand1 BY operand2 GIVING result." performs multiplication in COBOL.
When does the CONTINUE statement get executed in a COBOL program?
- After encountering an error
- At the end of the program execution
- It is never executed
- When a specific condition is met
The CONTINUE statement in COBOL is generally used at the end of a paragraph or section to indicate the end of processing for that specific section. It gets executed when the program reaches that point during its normal flow.