std::initializer_list is a C++ class template that is part of the C++ Standard
Template Library (STL). It is used to initialize objects of a class with a list 
of values. It is defined in the <initializer_list> header file.

An initializer list is a list of values that is enclosed in curly braces {}.
The values in an initializer list can be of any type that can be used to initialize
an object of that type.

The main advantage of using std::initializer_list is that it allows for more concise
and readable code when initializing objects with a list of values. It also allows
for uniform initialization, which can help catch errors early in the development
process.

#include <iostream>
#include <initializer_list>

void print(std::initializer_list<int> values) {
    for (auto value : values) {
        std::cout << value << " ";
    }
    std::cout << std::endl;
}

int main() {
    print({1, 2, 3, 4, 5});
    // Output: "1 2 3 4 5"
}