The syntax for class templates is basically the same as that for function templates:

$//$ Class for a pair of values of type T:

template

class Pair

$\{$

public:

Pair$()$;

Pair$($T first$\_$value, T second$\_$value$)$;

void set$\_$element$($int position, T value$)$;

T$\_$get$\_$element$($int position$)$ const;

private:

T first;

T second;$\text{'}$

$\}$;

Here are the definitions for the member functions set$\_$element and the constructor Pair with two arguments.

$//$ Use iostream and cstdlib

template

void Pair::set$\_$element$($int position, T value$)$

$\{$

if$($position $==1)$

first $=$ value;

else if$($position $==2)$

second $=$ value;

else

$\{$

cout $<<$ "Error: Illegal pair position.

$"$;

exit$(1)$;

$\{$

$\}$

template

Pair::Pair$($T first$\_$value, T second$\_$value$)$ : first$($first$\_$value$),$ second$($second$\_$value$)$

$\{$

$//$ empty body

$\}$

Requirement:

$1.$ Write the definitions for the member functions get$\_$element for the class template Pair and the constructor Pair$()$ with no argument. Add to the class a member function called display$\_$pairs that displays the pairs.

$2.$ Write a complete program that uses the class to read a pair of integers and a pair of strings and assign them to the appropriate objects, grades and names.

Here is an example of an input pair:

first pairs:

$8790$

second pairs:

Tom Martha