Chapter 17.2, Problem 9STE

Give the definition of a template class called HeterogeneousPair that is like the class template Pair discussed in the section “Syntax for Class Templates,” except that with HeterogeneousPair the first and second positions may store values of different types. Use two type parameters T1 and T2; all items in the first position will be of type T1, and all items in the second position will be of type T2. The single mutator function setElement in the template class Pair should be replaced by two mutator functions called setFirst and setSecond in the template class HeterogeneousPair. Similarly, the single accessor function getElement in the template class Pair should be replaced by two accessor functions called getFirst and getSecond in the template class HeterogeneousPair.