Here’s an example of how to check if two queues are identical in C++:

#include <iostream>
#include <queue>

bool areQueuesIdentical(std::queue<int>& queue1, std::queue<int>& queue2) {
    if (queue1.size() != queue2.size()) {
        return false;
    }

    while (!queue1.empty()) {
        if (queue1.front() != queue2.front()) {
            return false;
        }

        queue1.pop();
        queue2.pop();
    }

    return true;
}

int main() {
    std::queue<int> q1, q2;

    q1.push(1);
    q1.push(2);
    q1.push(3);

    q2.push(1);
    q2.push(2);
    q2.push(3);

    if (areQueuesIdentical(q1, q2)) {
        std::cout << "The queues are identical" << std::endl;
    } else {
        std::cout << "The queues are not identical" << std::endl;
    }

    return 0;
}

In the above code, we define a function areQueuesIdentical that takes two references to std::queue<int> objects. The function compares the sizes of the queues and returns false if they are not equal. Then, it iterates over both queues, comparing each element at the front. If any elements are different, the function returns false. If the loops complete without finding any differences, the function returns true, indicating that the queues are identical.

In the main function, we create two std::queue<int> objects, q1 and q2, and push some elements into them. We then call the areQueuesIdentical function with these two queues and display the appropriate message based on the return value.

By using this code, you can easily check if two queues are identical in C++.