What is the difference between class and function template?

2 Answers. For normal code, you would use a class template when you want to create a class that is parameterised by a type, and a function template when you want to create a function that can operate on many different types.

What is function template in C++ with example?

Templates are powerful features of C++ which allows us to write generic programs. We can create a single function to work with different data types by using a template.

What are function templates explain class template with the help of program?

It allows you to define the generic classes and generic functions and thus provides support for generic programming. Generic programming is a technique where generic types are used as parameters in algorithms so that they can work for a variety of data types. Templates can be represented in two ways: Function templates.

Why do you need class template?

A class template provides a specification for generating classes based on parameters. Class templates are generally used to implement containers. A class template is instantiated by passing a given set of types to it as template arguments.

What are the advantages and application of function template?

When a function is written for a family of similar functions, they are called as function templates. The main advantage of using function template is avoiding unnecessary repetition of the source code. The object code becomes more compact than the convectional way of declaring and defining the functions.

What is template explain with example?

A template is a form, mold, or pattern used as a guide to making something. Here are some examples: A ruler is a template when used to draw a straight line. A document in which the standard opening and closing parts are already filled in is a template that you can copy and then fill in the variable parts.

How are function templates implemented?

Implementing Template Functions Function templates are implemented like regular functions, except they are prefixed with the keyword template. Here is a sample with a function template.

Can a template be a template parameter?

A template can take a parameter that is itself the name of a template. These parameters have the pleasingly repetitious name of template template parameters. template class Cont> class Stack; This new template parameter list for Stack looks unnerving, but it’s not as bad as it appears.

What is useful when template of template is used?

Why we use :: template-template parameter? Explanation: It is used to adapt a policy into binary ones.

What is the use of class template?

Class Templates Like function templates, class templates are useful when a class defines something that is independent of the data type. Can be useful for classes like LinkedList, BinaryTree, Stack, Queue, Array, etc.

What is the difference between a class and a function template?

For normal code, you would use a class template when you want to create a class that is parameterised by a type, and a function template when you want to create a function that can operate on many different types. Function templates are also able to do type-deduction, which can be useful for creating factory functions:

What are some examples of templates in C++?

Examples of function templates are sort (), max (), min (), printArray (). Below is the program to implement Bubble Sort using templates in C++: Class Templates Like function templates, class templates are useful when a class defines something that is independent of the data type.

How do you declare a function template with type parameters?

The format for declaring function templates with type parameters is: template function_declaration; template function_declaration; The only difference between both prototypes is the use of either the keyword class or the keyword typename.