Questions and Answers Easy Questions and Answers

Questions and Answers

What is the output of this program?

#include <iostream>
    #include <queue>
    using namespace std;
    int main ()
    {
        priority_queue<int> QueueData;
        QueueData.push(25);
        QueueData.push(75);
        QueueData.push(45);
        QueueData.push(55);
        while (!QueueData.empty())
        {
            cout << " " << QueueData.top();
            QueueData.pop();
        }
        cout << endl;
        return 0;
    }

Correct Option: A

In this program, We used priority_queue and with that we are pushing and popping out the elements.

What is the output of this program?

#include <iostream>
    #include <queue>
    using namespace std;
    int main ()
    {
        queue<int> QueueData;
        int add (0);
        for (int k = 1; k <= 50; k++) 
            QueueData.push(k);
        while (!QueueData.empty())
        {
            add += QueueData.front();
            QueueData.pop();
        }
        cout << add << endl;
        return 0;
    }

Correct Option: B

In this program, We used the push and pop operation of quueue to find out the total of all the number from 1 to 50.

What is the output of this program?

#include <iostream>
    #include <queue>  
    using namespace std;
    int main ()
    {
        queue<int> QueueData;
        QueueData.push(15);
        QueueData.push(45);  
        QueueData.back() -= QueueData.front();
        cout << QueueData.back() << endl;
        return 0;
    }

Correct Option: C

In this program, We used the queue operation and performed the back operation. Because of that operation, We got the output as 30.

Which are presented in the container adaptors?

Correct Option: D

These mentioned things are presented in container adapters.

What does the sequence adaptor provide?

Correct Option: A

Interface to sequence container