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.
One common use of the REDEFINES clause is to reinterpret binary data as ____ data or vice versa
- Alphanumeric
- Display
- Numeric
- Packed-decimal
The REDEFINES clause is frequently used to reinterpret binary data as numeric data or vice versa, allowing the same memory space to be used for different data representations.
When declaring a table in COBOL, which clause specifies the number of occurrences?
- DEPENDING ON
- INDEXED BY
- OCCURS
- REDEFINES
The OCCURS clause in COBOL is used to declare a table and specifies the number of occurrences or elements in that table. It defines the size of the table and the number of times data is repeated within it.
You are developing a payroll system in COBOL. Which arithmetic operation should you use to calculate the gross salary of an employee based on their hourly wage and hours worked?
- ADD
- COMPUTE
- DIVIDE
- MULTIPLY
To calculate gross salary, you should use the MULTIPLY operation to multiply the hourly wage by the number of hours worked, giving the total amount earned. ADD, DIVIDE, and COMPUTE are not appropriate for this specific calculation.
To prevent duplicate records from being inserted into an indexed file, you can use the _____ clause in the file description.
- DISTINCT
- NO-DUPLICATES
- NO-DUPS
- UNIQUE
The NO-DUPLICATES clause in the file description of an indexed file ensures that duplicate records with the same key value are not allowed, preventing the insertion of records with duplicate keys.
Exception handling in COBOL often involves the use of the _____ clause.
- EXCEPTION
- NOT EXCEPTION
- NOT ON EXCEPTION
- ON EXCEPTION
Exception handling in COBOL often involves the use of the ON EXCEPTION clause. This clause allows the program to specify actions to be taken when certain exceptional conditions occur 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.