Object Oriented Programming in C++ MCQ question and answer with solution | C++ Programimg MCQs

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61.
What happens if the following C++ statement is compiled and executed?
int *ptr = NULL;
delete ptr;

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62.
What will be the output of the following C++ code?
#include <iostream>
using namespace std;
 
class A 
{
   int a;
   A() { a = 5;}
};
 
int main()
{
    A *obj = new A;
    cout << obj->a;
}

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65.
How access specifiers in Class helps in Abstraction?

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69.
What does polymorphism in OOPs mean?

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70.
What will be the output of the following C++ code?
#include <iostream>
using namespace std;
class A{
public:
	A(){
		cout<<"Constructor called\n";
	   }
	~A(){
		cout<<"Destructor called\n";
	    }
};
int main(int argc, char const *argv[])
{
	A *a = new A[5];
	delete a;
	return 0;
}

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