Why do we need templates in c

If we don't have to fixed the data type of the variable then we use template. Anil 10 Nov Templates are the foundation of generic programming, which involves writing code in a way that is independent of any particular type. Other Related Discussions. Role of mutable storage class specifier.

Ask a Question. Formatting: Spelling, grammar or punctuation errors. Personal Attack: Disrespectful content about a person. Insincere Question: Question not seeking real answers. Incorrect Topics: Broad or inaccurate topics.

Spam: Link or advertisement for a product. Not in English: Content in a different language. Not a Helpful Response: Does not address question. Images Need Explanation: Image-only or meme answer. In this program, we have created a class template, named ClassTemplate , with three parameters, with one of them being a default parameter.

This means that V is a default parameter whose default type is char. Inside ClassTemplate , we declare 3 variables var1 , var2 and var3 , each corresponding to one of the template parameters. Course Index Explore Programiz.

Popular Examples Create a simple calculator. Check prime number. Print the Fibonacci sequence. Check if a number is palindrome or not. Program to multiply matrix. Reference Materials iostream. This is like macros. The difference is, the compiler does type checking before template expansion.

Function Templates We write a generic function that can be used for different data types. Examples of function templates are sort , max , min , printArray. Following is a simple example of template Array class. Yes, like normal parameters, we can pass more than one data types as arguments to templates. The following example demonstrates the same.

Yes, like normal parameters, we can specify default arguments to templates. Both function overloading and templates are examples of polymorphism feature of OOP. Function overloading is used when multiple functions do similar operations, templates are used when multiple functions do identical operations. Each instance of a template contains its own static variable. If a multi-file template has editable parameters, the Hot Spot Session, which deploys when you apply this template, will guide you through all created files where the user input is required.

These template classes help in implementing commonly used algorithms and data structures. These template classes can be used with any user-defined type as well as a built-in type. STL algorithms are container-independent and thus reduce the complexity of the library. This approach implements compile-time polymorphism over run-time polymorphism. To learn more about programming and other related concepts, check out the courses on Great Learning Academy.

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