Question

Using a conditional expression, write a statement that increments nurn_users if update direction is 3, otherwise decrements Aum users.

Sample output with inputs: 83
New value is: 9
1 num users int(input())
2 update direction int(input())
3
4 num users (num users 1) if update direction else (num user )
5 6 print("New value is, num users)

Answer 1

To increment or decrement the variable num_users based on the value of update_direction, you can use a conditional expression in Python: num_users = num_users + 1 if update_direction == 3 else num_users - 1. This exercises the use of a ternary operator or conditional expression.

Step-by-step explanation:

The question asks how to use a conditional expression in a programming context to either increment or decrement a variable called num_users based on the value of another variable called update_direction. If update_direction is equal to 3, then num_users should be incremented; otherwise, num_users should be decremented.

The correct conditional expression in Python would look like this:

num_users = num_users + 1 if update_direction == 3 else num_users - 1

This is known as a ternary operator or a conditional expression in Python. It evaluates the condition update_direction == 3 and selects the first expression num_users + 1 if the condition is true, or the second expression num_users - 1 if the condition is false. After the evaluation, we print out the new value of num_users, as shown in the example given by the student.