$4.$ Explicit parametric polymorphism need not be restricted to a single type parameter. For example, in $\backslash (\backslash$mathrm$\{$C$\}++\backslash )$ one can write:

Template

Struct Pair$\backslash \{$

First first;

Second second;

$\backslash \}$;

Write a C$++$ template function makePair that takes two parameters of different types and returns a Pair containing its two values.