Templates c. The library containers like iterators and algorithms are examples of generic programming and have been developed using template concept. C does not support explicit specialization. A template parameter is a special kind of parameter that can be used to pass a type as argument.
Templates are the basis for generic programming in c. The following are the key differences between c generics and c templates. Templates are powerful features of c which allows you to write generic programs.
Template c function templates. C does not allow non type template parameters such as template cint i. Rather than writing and maintaining the multiple codes.
The simple idea is to pass data type as a parameter so that we dont need to write same code for different data types. Template is simple and yet very powerful tool in c. When a function or class is instantiated from a template.
However many data structures and algorithms look the same no matter what type they are operating on. A function template behaves like a function except that. A template is a blueprint or formula for creating a generic class or a function.
C generics do not provide the same amount of flexibility as c templates. For example a software company may need sort for different data types. Templates are often used in larger codebase for the purpose of code reusability and flexibility of the programs.
That is a custom. A class template provides a specification for generating classes based on. As a strongly typed language c requires all variables to have a specific type either explicitly declared by the programmer or deduced by the compiler.
When template arguments are provided or for function and class since c17 templates only deduced they are substituted for the template parameters to obtain a specialization of the template that is a specific type or a specific function lvalue.