52.
Which is the correct syntax of defining a pure virtual function?

55.
What is the use of random_shuffle() function of STL algorithm?

56.
What will be the output of the following C++ code?
#include <iostream>
using namespace std;
int main ()
{
    int n;
    for (n = 5; n > 0; n--)
    {
        cout << n;
        if (n == 3)
            break;
    }
    return 0;
}

57.
What will be the output of the following C++ code?
#include <iostream>
#include <algorithm>
#include <vector>
using namespace std; 
int main ()
{
    int myints[] = {2, 4, 6, 8, 10};
    vector<int> v(myints, myints + 5);
    make_heap (v.begin(),v.end());
    cout  << v.front() << '\n'; 
    return 0;
}

58.
What is a comment in c++?

60.
Pick the correct statement.