Which of the following can be used to create an abstract class in the C++ programming language?

CPP - Quiz(MCQ)

By declaring a virtual function in the base class

By using the pure virtual function in the class

By declaring the virtual keyword afterward, the class Declaration

None of the above

Correct Answer : By using the pure virtual function in the class

Explanation : A class must contain at least one declaration of the pure virtual function in itself to be called an abstract class. Therefore to make an abstract class, one has to declare at least one pure virtual function in that class.

Recently Updated in CPP Questions

What is the signature of math in function using command line arguments?

int main(int argc, char **argv);

int main(int argc, char const **argv);

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

All of the above

Correct Answer : All of the above

Explanation : Any of the above signature can be used while using command line arguments in C++ programs

Which of the following gives the name of the program if the second parameter to the main fucntion is char **argv?

argv[0]

argv[1]

argv[2]

argv[3]

Correct Answer : argv[0]

Explanation : The first string in the list of command line arguments represents the name of the program which can be accessed by using argv[0].

What does the first parameter of the main function represent?

List of command line arguments

Stack of command line arguments

Number of command line arguments

Dictionary of command line arguments

Correct Answer : Number of command line arguments

Explanation : The first argument of the main() function represents the number of command line arguments that are passed.

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