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Semenov [28]
3 years ago
9

Using a conditional expression, write a statement that increments num_users if update_direction is 3, otherwise decrements num_u

sers. Sample output with inputs: 8 3 New value is: 9
Engineering
1 answer:
yuradex [85]3 years ago
6 0

Answer:

num_users = (update_direction == 3) ? (++num_users) : (--num_users);

Explanation:

A. Using the regular if..else statement, the response to the question would be like so;

if (update_direction == 3) {

  ++num_users;  // this will increment num_users by 1

}

else {

 -- num_users;    //this will decrement num_users by 1

}

Note: A conditional expression has the following format;

<em>testcondition ? true : false;</em>

where

a. <em>testcondition </em>is the condition to be tested for. In this case, if update_direction is 3 (update_direction == 3).

b. <em>true </em>is the statement to be executed if the <em>testcondition</em> is true.

c. false is the statement to be executed it the <em>testcondition</em> is false.

B. Converting the above code snippet (the if..else statement in A above) into a conditional expression statement we have;

num_users = (update_direction == 3) ? (++num_users) : (--num_users);

<em>Hope this helps!</em>

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