Question

Of the following variable names, which is the best one for keeping track of whether an integer might be prime or not?

divisible
isPrime
mightBePrime
number

Answer 1

The best variable name for tracking whether an integer might be prime is 'isPrime', as it clearly indicates its purpose. Names like 'divisible' and 'number' are ambiguous, whereas 'mightBePrime' suggests uncertainty, which is not ideal for storing a definitive boolean result.

Step-by-step explanation:

When selecting a variable name for keeping track of whether an integer might be prime or not, it's important to choose a name that is clear and self-explanatory. Out of the options given, isPrime would be the best variable name. This name directly indicates that the variable will hold a true or false value related to the integer's primality.

Variable names like divisible and number are more ambiguous and do not directly communicate their purpose in relation to prime checking. On the other hand, mightBePrime suggests uncertainty, which is not ideal when a variable is intended to provide a definitive answer after a prime check.

In the context of programming, a boolean variable isPrime would be used to store the result of a primality test, being set to true if the integer is prime and false otherwise. It's straightforward, and by following common naming conventions, it enhances code readability and maintainability.