Which operation will write val to the item at position i in anArray?

Suppose we are given an STL vector container named vec that holds values of type double. What do each of vec[vec.size()-1], vec.back(), *(vec.end()-1), *(vec.begin()+vec.size()-1)and *vec.rbegin() mean?

What will be an ideal response?

In a While loop, the loop variable can be initialized at any place in the program before the condition.

Answer the following statement true (T) or false (F)