Questions and Answers

Questions and Answers

Easy Questions

C++ Programming

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Questions and Answers
Standard Library
  1. What is the output of this program?
    #include <iostream>
        #include <deque>
        using namespace std;
        int main ()
        {
            unsigned int k;
            deque<int> DequeData;
            DequeData.push_back (50);
            DequeData.push_back (75);
            DequeData.push_back (90);
            for(deque<int> :: iterator iter = DequeData.begin(); iter != DequeData.end(); ++iter)
            {
            }
            DequeData.clear();
            DequeData.push_back (150);
            DequeData.push_back (175);
            for(deque<int> :: iterator iter = DequeData.begin(); iter != DequeData.end(); ++iter)
                cout << ' ' << *iter;
            cout << '\n';
            return 0;
        }










  1. View Hint View Answer Discuss in Forum

    NA

    Correct Option: D

    In this program, We cleared the old values presented in the dequeue with the new values.

  1. What is the output of this program?
    #include <iostream>
        #include <deque>
        using namespace std;
        int main ()
        {
            unsigned int k;
            deque<int> FirstDeque (4,125);
            deque<int> SecondDeque (5,150);
            FirstDeque.swap(SecondDeque);
            cout << "First Data contains:";
            for (deque<int>::iterator iter = FirstDeque.begin(); iter != FirstDeque.end(); ++iter)
                cout << ' ' << *iter;
            cout << "\nSecond Data contains:";
            for (deque<int>::iterator iter = SecondDeque.begin(); iter != SecondDeque.end(); ++iter)
                cout << ' ' << *iter;
            return 0;
        }










  1. View Hint View Answer Discuss in Forum

    NA

    Correct Option: B

    In this program, We swapped the values of both dequeues and printing the dequeues.

  1. What is the output of this program?
    #include <iostream>
        #include <deque>
        using namespace std;
        int main ()
        {
            deque<int> DequeData (6);  
            deque<int>::reverse_iterator RevIter = DequeData.rbegin();
            int k = 0;
            for (RevIter = DequeData.rbegin(); RevIter != DequeData.rend(); ++RevIter)
                *RevIter = ++k;
            for (deque<int> :: iterator iter = DequeData.begin();
            iter != DequeData.end(); ++iter)
            cout << ' ' << *iter;
            return 0;
        }










  1. View Hint View Answer Discuss in Forum

    NA

    Correct Option: E

    In this program, We used the operation of rbegin and rend on dequeue and produced the result.

  1. Which of the following will return the new element at the end of container?










  1. View Hint View Answer Discuss in Forum

    NA

    Correct Option: D

    back

  1. Which of the following class template are based on arrays?










  1. View Hint View Answer Discuss in Forum

    NA

    Correct Option: C

    Class template vector and class template dequeue both are based on arrays.