Invalid Operation on an Empty List

Read an integer n. Create an empty List<int> and add n only if n > 0. Then print the first element with list.First(). Calling First() on an empty sequence throws an InvalidOperationException — catch it and print exactly List is empty. Use top-level statements with try/catch.

Input 5 prints: 5
Input 0 prints: List is empty

Expected Output:

Topics:

Exceptions

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