Templates c. That is a custom. In c this can be achieved using template parameters. In simple terms you can create a single function or a class to work with different data types using templates.
There is a single definition of each container such as vector but we can define many different kinds. 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. Just like regular function parameters can be used to pass values to a function template parameters allow to pass also types to a function.
Templates are powerful features of c which allows you to write generic programs. C does not allow non type template parameters such as template cint i. Rather than writing and maintaining the multiple codes.
C does not support explicit specialization. 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. Template c function templates.
A function template behaves like a function except that. 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.
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. A template parameter is a special kind of parameter that can be used to pass a type as argument.
A class template provides a specification for generating classes based on. However many data structures and algorithms look the same no matter what type they are operating on. C generics do not provide the same amount of flexibility as c templates.
The following are the key differences between c generics and c templates.