1. What should you list in the precondition of a template function? a. what happ
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Question
1. What should you list in the precondition of a template function?
a. what happens after the function is executed.
b. any functionality that the instantiating class must implement (like < )
c. what must be true before the function executes.
d. all of the above.
e. A & B
f. B & C
2. Given that you have two versions of a function that are the same except that one expects some integer parameters, and the other expects a float and an integer parameter, which parameters would you change a T in order to make this a template function.
a. The parameter that always stays an integer.
b. The parameter that is an integer in one function and a float in the other function.
c. Both parameters change.
d. neither parameter changes.
3. Why can you not use the swap template function to swap two complete arrays?
template <class T>
void swap (T& left, T& right){
T tmp = left; left = right; right = tmp;}
a. You cannot pass an array to a function.
b. The swap function does not return anything
c. the = operator does not work for an array.
d. tmp should be an integer.
Explanation / Answer
1. What should you list in the precondition of a template function?
c. what must be true before the function executes.
2. Given that you have two versions of a function that are the same except that one expects some integer parameters, and the other expects a float and an integer parameter, which parameters would you change a T in order to make this a template function.
b. The parameter that is an integer in one function and a float in the other function.
3. Why can you not use the swap template function to swap two complete arrays?
template <class T>
void swap (T& left, T& right){
T tmp = left; left = right; right = tmp;}
c. the = operator does not work for an array.
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