size of unordered_set

#include <iostream>
#include <unordered_set>

int main() {
    std::unordered_set<int> mySet;

    // Insert elements into the unordered_set
    mySet.insert(10);
    mySet.insert(20);
    mySet.insert(30);

    // Get the size of the unordered_set
    size_t setSize = mySet.size();

    // Display the size of the unordered_set
    std::cout << "Size of the unordered_set: " << setSize << std::endl;

    return 0;
}