Chapter 16, Problem 34RQE

Program Plan Intro

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 can specify the “type parameter” instead of using the actual data type.
• 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.

Example:

For example consider the below function template used to find the cube of given value for any types:

//template function

template <class T>

//function definition of "cube"

T cube(T x)

{

//return the cube of the value

return x*x*x ;

}