What are C++ templates in classes?

What are C++ templates in classes?

C++ templates allow you to create classes that can operate with any data type. They enable code reusability.

Can you give me an example of a template class?

Sure! Here's a simple example:

template <typename T>
class Box {
private:
    T item;
public:
    Box(T item) : item(item) {}
    T getItem() { return item; }
};

This Box class can hold any data type.

How do I instantiate a template class?

You can instantiate it like this:

Box<int> intBox(123);
Box<std::string> strBox("Hello");

This creates a Box for an integer and a string.

What are the benefits of using templates?

Templates promote code reusability, type safety, and can lead to more efficient code since they are resolved at compile time.