Question

Suppose that t1 and t2 are throttle variables and that t1 is null but t2 refers to a valid throttle. Which of these statements will cause an error?

t1 = t2; t2 = t1; (2);

Answer 1

Assigning the valid throttle variable t2 to the null variable t1 does not result in an error, but assigning t1 to t2 may cause an error if the programming language or the program context does not allow null assignments to a non-null throttle.

Step-by-step explanation:

The question you've asked pertains to assigning values between two throttle variables in a programming context. If t1 is null and t2 refers to a valid throttle, the statement t1 = t2; will not cause an error because you are simply assigning t2's value to t1, which is allowed even if t1 is currently null. However, the statement t2 = t1; might cause an error depending on the context and the language's handling of null values because you are trying to assign a null value to t2 which is supposed to be a valid throttle.

If you're working in a programming language that does not allow null values to be assigned to certain variable types or if t2 requires a non-null value for proper operation, an error or an exception might occur. Always ensure that null assignments are handled correctly to avoid runtime errors.