The FUNCTION _______ intrinsic function is used to convert a numeric value to a string.
- NUMVAL
- NUMVAL-C
- NUMERIC
- EDIT
The correct option is NUMVAL-C. In COBOL, the NUMVAL-C intrinsic function is used to convert a numeric value to a string, providing control over the format of the resulting string.
The _____ function in COBOL is used for calculating the number of days between two dates.
- FUNCTION CURRENT-DATE
- FUNCTION DATE-DIFF
- FUNCTION DAY-COUNTER
- FUNCTION NUMVAL
In COBOL, the FUNCTION DATE-DIFF is used to calculate the difference in days between two dates. It is valuable for tasks such as determining the duration between two events.
In Object-Oriented COBOL, what is polymorphism, and how is it implemented?
- By controlling program execution
- By defining the size and type of data
- By optimizing memory usage
- Polymorphism allows objects of different classes to be treated as objects of a common superclass. It's implemented through method overloading and overriding.
Polymorphism in Object-Oriented COBOL allows objects of different classes to be treated as objects of a common superclass. It is implemented through method overloading (multiple methods with the same name but different parameters) and overriding (redefining a method in a subclass). This promotes flexibility and enhances code readability.
When defining an indexed file in COBOL, what information is typically included in the file's SELECT statement?
- FILE STATUS clause, DATA RECORD clause, FILE-CONTROL paragraph, and ACCESS mode
- FILE STATUS clause, RECORD clause, ACCESS mode, and ORGANIZATION mode
- FILE STATUS clause, RECORD clause, FILE-CONTROL paragraph, and ACCESS mode
- RECORD clause, ORGANIZATION mode, ACCESS mode, and INDEXED BY clause
The SELECT statement for an indexed file in COBOL typically includes the FILE STATUS clause for error handling, the RECORD clause for specifying the structure of records, the FILE-CONTROL paragraph to manage file attributes, and the ACCESS mode to indicate sequential or random access.
When performing date arithmetic in COBOL, you often use the _____ verb.
- ADD
- COMPUTE
- DIVIDE
- MULTIPLY
When performing date arithmetic in COBOL, the COMPUTE verb is commonly used. It allows for the manipulation of date fields, facilitating calculations involving days, months, and years.
When a data item is defined with the OCCURS clause and a DEPENDING ON phrase, the actual number of occurrences is determined at ____________.
- Compile time
- Declaration time
- Execution time
- Initialization time
The actual number of occurrences for an OCCURS clause with a DEPENDING ON phrase is determined at execution time, not during compilation. The DEPENDING ON phrase allows the size to be specified dynamically during program execution.
What is the difference between the PERFORM...THRU and PERFORM...VARYING statements in COBOL?
- PERFORM...THRU is used for conditional loops, while PERFORM...VARYING is used for unconditional loops
- PERFORM...THRU is used for iterative loops, while PERFORM...VARYING is used for nested loops
- PERFORM...THRU is used for nested loops, while PERFORM...VARYING is used for iterative loops
- There is no difference between PERFORM...THRU and PERFORM...VARYING
The PERFORM...THRU statement in COBOL is used for nested loops, allowing the programmer to execute a series of paragraphs or sections. On the other hand, PERFORM...VARYING is used for iterative loops, allowing the iteration through a range of values.
How does the CONTINUE statement impact the flow of control in a COBOL program?
- It repeats the current statement indefinitely
- It transfers control to a specific paragraph
- It transfers control to the next sequential statement
- It transfers control to the specified label
The CONTINUE statement in COBOL is a no-operation statement. It does not affect the flow of control and transfers it to the next sequential statement. It is often used for placeholder purposes or to improve code readability.
The _______ clause in a PERFORM statement is used to specify the condition for loop termination.
- TIMES
- UNTIL
- VARYING
- WITH
The UNTIL clause in a COBOL PERFORM loop allows you to specify a condition for loop termination. The loop will continue executing until the specified condition becomes true.
In COBOL, the FUNCTION ______ intrinsic function can be used to determine the current date.
- CURRENT-DATE
- DATE
- DAY
- TIME
The FUNCTION CURRENT-DATE in COBOL is used to retrieve the current date and time. It returns a data structure containing various components such as year, month, day, hour, minute, and second.