What are some examples of templates in C++?

What are some examples of templates in C++?

C++ templates allow you to write generic and reusable code. For example, you can create a template function for swapping two values.

Can you show me the code for that swap function?

Sure! Here's a simple template function for swapping two values:

template <typename T>
void swap(T &a, T &b) {
    T temp = a;
    a = b;
    b = temp;
}

This function works with any data type.

What about class templates? Can you give an example?

Absolutely! Here's an example of a class template for a simple Pair class:

template <typename T1, typename T2>
class Pair {
public:
    T1 first;
    T2 second;
    Pair(T1 f, T2 s) : first(f), second(s) {}
};

This class can hold a pair of values of different types.