Templates 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. The simple idea is to pass data type as a parameter so that we dont need to write same code for different data types.
The library containers like iterators and algorithms are examples of generic programming and have been developed using template concept. Rather than writing and maintaining the multiple codes. There is a single definition of each container such as vector but we can define many different kinds.
C does not allow non type template parameters such as template cint i. C does not support explicit specialization. Just like regular function parameters can be used to pass values to a function template parameters allow to pass also types to a function.
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. Templates are powerful features of c which allows you to write generic programs. In simple terms you can create a single function or a class to work with different data types using templates.
A template is a blueprint or formula for creating a generic class or a function. Template is simple and yet very powerful tool in c. Templates are often used in larger codebase for the purpose of code reusability and flexibility of the programs.
That is a custom. For example a software company may need sort for different data types. Template c function templates.
A template parameter is a special kind of parameter that can be used to pass a type as argument. The following are the key differences between c generics and c templates. C generics do not provide the same amount of flexibility as c templates.
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.