How do I use templates in C++?

How do I use templates in C++?

Templates in C++ allow you to write generic and reusable code. You can create function templates and class templates.

Can you give me an example of a function template?

Sure! Here's a simple example:

template <typename T>
T add(T a, T b) {
    return a + b;
}

This function can add two numbers of any type.

What about class templates?

Class templates are similar. Here's an example:

template <typename T>
class Box {
    T value;
public:
    Box(T v) : value(v) {}
    T getValue() { return value; }
};

This class can hold a value of any type.

Are there any limitations to using templates?

Yes, templates can lead to code bloat if overused, and debugging template errors can be more complex.