What is the output from the following C++ code fragment if the following values are the inputs to cin? 38 35 71 14 -1 int sum, num; sum = 0; cin >> num; while(num != -1) { sum += num; cin >> num; } cout << "Sum = " << sum << endl; 5. Write a do - while loop to get 20 numbers from the user and sum them together. Output the sum after the loop. Declare any variables you need.