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Which of the following is used to make an abstract class? - Practice - ObjectiveMcq

HomePracticeC++ InterviewProgrammingWhich of the following is used to m...

Programming C++ InterviewMedium

Which of the following is used to make an abstract class?

Correct Answer: A — By declaring a pure virtual function in a class

Abstract class should have at least one pure virtual function. Therefore to declare an abstract class one should declare a pure virtual function in a class.

Related Practice

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

#include <iostream>

#include <bitset>

using namespace std;

int main()

{

bitset<b1(95);

bitset<b2 = b1 >> cout<<b1<<endl<<b}
What will be the output of the following C++ code

#include <iostream>

#include <bitset>

using namespace std;

int main()

{

bitset<b1(95);

bitset<b2 = b1 << cout<<b}
What happens when only one argument is supplied to flip() function?
What happens when no argument is supplied to flip() function?
What is the use of the flip function in bitset?
Which of the following is correct?
How destructor overloading is done?
What will be the output of the following C++ code

#include <iostream>

using namespace std;

class A{

public:

int a;

A(){

cout<<"Constructor called";

}

} a;

int main(int argc, char const *argv[])

{

return}