Question

What is the difference between void and non-void methods?

a) Void methods return a value of the appropriate type, while non-void methods do not return a value.
b) Non-void methods must return a value of the appropriate type, while void methods do not return a value.
c) Void methods cannot have parameters, while non-void methods can have parameters.
d) Non-void methods cannot have parameters, while void methods can have parameters.

Answer 1

Void methods do not return a value, while non-void methods must return a value of an appropriate type. Both can have parameters.

Step-by-step explanation:

The difference between void and non-void methods is that non-void methods must return a value of the appropriate type, while void methods do not return a value. This means option b) is correct. To elaborate, a void method performs an operation but does not send any value back to the calling code. For example, a void method might simply print out information or update a file without giving any output. On the other hand, a non-void method will perform an operation and return a result that can be used later in your code. An example is a method that calculates the sum of two numbers and returns the resulting sum.

Moreover, both void and non-void methods can have parameters, allowing them to receive input when they are called. Parameters give methods more flexibility and reusability since they can operate with different values each time they are invoked.