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Welcome to the Class Hierarchies,Library and Containers MCQs Page

Dive deep into the fascinating world of Class Hierarchies,Library and Containers with our comprehensive set of Multiple-Choice Questions (MCQs). This page is dedicated to exploring the fundamental concepts and intricacies of Class Hierarchies,Library and Containers, a crucial aspect of Object Oriented Programming Using C++. In this section, you will encounter a diverse range of MCQs that cover various aspects of Class Hierarchies,Library and Containers, from the basic principles to advanced topics. Each question is thoughtfully crafted to challenge your knowledge and deepen your understanding of this critical subcategory within Object Oriented Programming Using C++.

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Check out the MCQs below to embark on an enriching journey through Class Hierarchies,Library and Containers. Test your knowledge, expand your horizons, and solidify your grasp on this vital area of Object Oriented Programming Using C++.

Note: Each MCQ comes with multiple answer choices. Select the most appropriate option and test your understanding of Class Hierarchies,Library and Containers. You can click on an option to test your knowledge before viewing the solution for a MCQ. Happy learning!

Class Hierarchies,Library and Containers MCQs | Page 12 of 15

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Q111.
Which operator is used in priority queue?
Discuss
Answer: (a).operator<
Q112.
What do associate containers implement?
Discuss
Answer: (b).Associative arrays
Q113.
By using which of the following the elements in the associate container can
Discuss
Answer: (a).Key
Q114.
How many items are presented in the associate container?

a.

2

b.

3

c.

4

d.

5

Discuss
Answer: (c).4
Q115.
What is the output of this program?
    #include <iostream>
    #include <string>
    #include <bitset>
    using namespace std;
    int main ()
    {
        string mystring;
        bitset<4> mybits; 
        mybits.set();
        mystring = mybits.to_string<char, char_traits<char>, 
        allocator<char> >();
        cout << mystring << endl;
        return 0;
    }
Discuss
Answer: (d).1111
Q116.
What is the output of this program?
    #include <iostream>
    #include <algorithm>
    #include <vector>
    using namespace std;
    int main () 
    {
        vector<int> first (5, 10);
        vector<int> second (5, 33);
        vector<int>::iterator it;
        swap_ranges(first.begin() + 1, first.end() - 1, second.begin());
        cout << " first contains:";
        for (it = first.begin(); it != first.end(); ++it)
            cout << " " << *it;
        cout << "\nsecond contains:";
        for (it = second.begin(); it != second.end(); ++it)
            cout << " " << *it;
        return 0;
    }
Discuss
Answer: (a).first contains: 10 33 33 33 10 second contains: 10 10 10 33 33
Q117.
What is the output of this program?
    #include <iostream>
    #include <map>
    using namespace std;
    int main ()
    {
        map<char, int> mymap;
        map<char, int> :: iterator it;
        mymap['b'] = 100;
        mymap['a'] = 200;
        mymap['c'] = 300;
        for (map<char, int> :: iterator it = mymap.begin(); it != mymap.end(); ++it)
            cout << it -> first << " => " << it -> second << '\n';
        return 0;
    }
Discuss
Answer: (c).a => 200 b => 100 c => 300
Q118.
What is the output of this program?
    #include <iostream>
    #include <set>
    using namespace std;
    int main ()
    {
        set<int> myset;
        myset.insert(20);
        myset.insert(30);
        myset.insert(10);
        while (!myset.empty())
        {
            cout << ' ' << *myset.begin();
            myset.erase(myset.begin());
        }
        cout << '\n';
        return 0;
    }
Discuss
Answer: (d).All of the mentioned
Q119.
What is the output of this program?
    #include <iostream>
    #include <set>
    using namespace std;
    int main ()
    {
        multiset<int> mymultiset;
        for (int i = 0; i < 5; i++) mymultiset.insert(i);
        multiset<int> :: key_compare mycomp = mymultiset.key_comp();
        int highest = *mymultiset.rbegin();
        multiset<int> :: iterator it = mymultiset.begin();
        do 
        {
            cout << ' ' << *it;
        } while (mycomp(*it++, highest));
        return 0;
    }
Discuss
Answer: (b).01234
Q120.
How many instance are allowed by map and set while inserting a element into container?
Discuss
Answer: (a).1

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