How many types of polymorphism are there in C++?

What does the function object implement?

What type of semantics does C++ use to implement iterators?

How many types of iterators are there in the C++ Standard Template Library (STL)?

If a pointer is declared more than once which of the following may occur?

Length of a string literal is

Predict the output of the below program:

int main()

{

    int i;

    if (printf("0"))

        i = 3;

    else

        i = 5;

    printf("%d", i);

    return 0;

}

Find the output of the following C code:

#include <stdio.h>

struct abc{

    struct xyz{

    };

};

int main()

{

    printf("%d", sizeof(struct abc));

    return 0;

}

What will be the output of the following C++ code?

#include <iostream>

using namespace std;

int main()

{

int a = 9;

int& aref = a;

       a++;

cout << "The value of a is " << aref;

return 0;

}

What is the meaning of polymorphism in object-oriented programming (OOP)?