Object Oriented Programming Practice Test 5

1. Which is the correct syntax of inheritance?

class derived_classname : access base_classname{ /*define class body*/ };

class derived_classname : base_classname{ /*define class body*/ };

class base_classname :access derived_classname{ /*define class body*/ };

class base_classname : derived_classname{ /*define class body*/ };

2. Can we call methods of base class using the constructor of the derived class?

No, but we can call in some cases

Yes, always

No, never

Yes, but not always

3. Can default arguments be used with the template class?

Yes, always

Yes, in some special cases

No, it must satisfy some specific conditions first

No, it can’t be done

4. If 6 classes uses single level inheritance with pair classes (3 pairs), which inheritance will this be called?

Multiple

Single

Multilevel

Hierarchical

5. If a class is enclosing more than one class, than it can be called as base class of those classes.

True

False

6. While inheriting a class, if no access mode is specified, then which among the following is true? (in C++)

It gets inherited privately by default

It is not possible

It gets inherited publicly by default

It gets inherited protected by default

7. How many derived class can a single base class have?

As many are required

8. What is the output of following program?

template <typename T>
void test(const T&x) 
{
    static int count = 0;
    cout << "x = " << x << " count = " << count << endl;
    ++count;
    return;
}
 
void main() 
{
    test<int> (2);
    test<int>(2);
    test<double>(2.2);
}

x = 2 count = 0
x = 2 count = 1
x = 2.2 count = 0

x = 2 count = 0
x = 2.2 count = 0
x = 2.2 count = 0

x = 2 count = 0
x = 2 count = 1
x = 2.2 count = 2

x = 2 count = 0
x = 2 count = 0
x = 2.2 count = 0

9. Which among the following defines single level inheritance?

One derived class derives from another derived class

One base class derives another class

One base class inherits from one derived class

One derived class inherits from one base class

10. How many basic types of inheritance are provided as OOP feature?