maxheap cpp stl

1. Include the necessary header file for using the priority queue in C++:

#include <queue>

1. Define a custom comparator function for creating a max heap:

struct MaxHeapComparator {
    bool operator()(int a, int b) {
        return a < b; // Change to a > b for max heap
    }
};

1. Declare a priority queue using the custom comparator:

std::priority_queue<int, std::vector<int>, MaxHeapComparator> maxHeap;

1. Add elements to the max heap:

maxHeap.push(3);
maxHeap.push(8);
maxHeap.push(1);

1. Access the maximum element in the max heap:

int maxElement = maxHeap.top();

1. Remove the maximum element from the max heap:

maxHeap.pop();