C Template Tutorial

A template parameter is a special kind of parameter that can be used to pass a type as argument.

C template tutorial. C templates provide a way to re use source code as opposed to inheritance and composition which provide a way to re use object code. Just like regular function parameters can be used to pass values to a function template parameters allow to pass also types to a function. What are templates in c. Variadic template allows a function to take variable number of arguments of any type.

Suppose we want to create a function log that accepts variable number of arguments of any type and prints them on console ie. Appdividend latest code tutorials. C templates templates are the foundation of generic programming which involves writing code in a way that is independent of any particular type. In c this can be achieved using template parameters.

Without template you would need to replicate same code all over again and again for all required data types. A template is a blueprint or formula for creating a generic class or a function. Templates are mostly implemented for crafting a family of classes or functions having similar features. Lets understand by an example.

For example a class template for an array of the class would create an array having various data types such as float array and char array. And obviously as said before it requires code maintenance. C templates are useful because the idea is to pass data type as the parameter so that we dont need to write the same code for different data types. Variadic template is introduced in c11.

Use function templates to write generic functions that can be used with arbitrary types.