Chapter 16, Problem 38RQE

Explanation of Solution

Function template:

In C++, a function template is referred as a “generic” function, which can work with different data types.

• While writing a function template, a programmer should use a “type parameter” to denote a “generic” data type instead of using the actual parameter.
• The compiler generates the code, when it encounters a function call to a function template. This code will handle the particular data type which is used in the function call.
• The compiler indentifies the argument type and generates the code to work with those types.

Example:

For example consider the following function template for adding different data types values:

//include the required header files

#include <iostream>

#include <iomanip>

using namespace std;

//template function

template <class T,class B>

//function definition of "add"

T add(T x,B y)