Given a function that does not return any value, What value is thrown by default when executed in shell.OptionsintboolvoidNone

To answer your question regarding the default return value of a function that does not explicitly return a value in a shell environment, let's analyze the options provided:

1. int: This typically represents an integer type, but if a function does not return a value, it cannot provide an integer by default.
2. bool: This represents a boolean value (true or false). However, without an explicit return statement, this type will not have a default value.
3. void: In languages like C/C++, a function declared as returning void does not return a value at all; hence, this option is more aligned with the context.
4. None: In Python, for example, a function that does not return a value implicitly returns None.

Conclusion

In most programming contexts, particularly in Python, if a function does not return any value, the default returned value is None. The most appropriate response from the given options would be None. If considering C-like languages, where a return type of void means no return value, the closest response would be void as it signifies the absence of a return.