How to define a priority queue with four values in c++?

Question

when we have two values like ID and Marks of a student and we want to put it in a queue we define the priority queue in the following way.

priority_queue<pair<int,int> > queue;

Let us say, that we have four values to put it into a queue. ie., I want all the three values as a single entity in the queue and I will define my own comaprator based on the three values. I'm new to STL and I could not find appropriate way of doing this.

Answer 1

You have std::tuple for such cases. And you write a comparator just like you would write it for a pair.