CHALLENGE ACTIVITY 4.2.2: Basic while loop with user input Write an expression that executes the loop while the user enters a number greater than or equal to 0 Note: These activities may test code with different test values. This activity will perform three tests, with userNum initially 9 and user input of 5,2,-1, then with userNum initially 0 and user input of-17, then with userNum initially -1. See "How to Use zyBooks Also note: If the submitted code has an infinite loop, the system will stop running the code after a few seconds, and report Program end never reached." The system doesn't print the test case that caused the reported message 1 #include 2 using namespace std; 1 test passed 4 int mainO 5 int userNum; 6 All tests passed 9whileYour solution goes here *) 10 cout > userNum 12 13 cout 14 15 16