Question

Which of the following are valid method calls?

a) calculateSum(5, 3)
b) printMessage(Hello, 42)
c) getAverage(10.0, 15.0, "20.0")
d) updateData()
e) multiplyNumbers(3, 4, 5)

Answer 1

The validity of method calls in a programming context depends on the method's defined parameters. Calls a), d), and potentially e) seem valid. Call b) is invalid due to missing quotation marks, and c) is potentially invalid due to a formatting issue.

Step-by-step explanation:

The student is asking about the validity of various method calls in a programming context. Whether a method call is valid depends on the method definition. This includes the number of arguments, their data types, and whether those arguments are being passed in the correct order.

• a) calculateSum(5, 3): This seems valid assuming 'calculateSum' is defined to take two integer arguments.
• b) printMessage(Hello, 42): This call is invalid as it appears to be missing quotation marks around 'Hello', which should be a string.
• c) getAverage(10.0, 15.0, "20.0"): This could be valid if 'getAverage' is designed to take two doubles and a string, but it's unconventional and might be incorrect if the method expects all numbers in the same format.
• d) updateData(): This is valid if 'updateData' requires no arguments.
• e) multiplyNumbers(3, 4, 5): This is likely valid if 'multiplyNumbers' is defined to take three integer arguments.

Furthermore, Example 6 and Sample Answer provided in the prompt seem unrelated to this question and are therefore not applicable.