C++ Classes Test – 1

1. Which is used to define the member of a class externally?

2. Constructors are used to ____________

3. When struct is used instead of the keyword class means, what will happen in the program?

4. The data members and functions of a class in C++ are by default ____________

5. Which of the following is a valid class declaration?

6. How many specifiers are present in access specifiers in class?

7. Which other keywords are also used to declare the class other than class?

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

    #include <iostream>
    using namespace std;
    class rect
    {
        int x, y;
        public:
        void val (int, int);
        int area ()
        {
            return (x * y);
        }
    };
    void rect::val (int a, int b)
    {
        x = a;
        y = b;
    }
    int main ()
    {
        rect rect;
        rect.val (3, 4);
        cout << "rect area: " << rect.area();
        return 0;
    } 

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

    #include <iostream>
    using namespace std;
    class CDummy
    {
        public:
        int isitme (CDummy& param);
    };
    int CDummy::isitme (CDummy& param)
    {
        if (&param == this)
            return true;
        else
            return false;
    }
    int main ()
    {
        CDummy a;
        CDummy *b = &a;
        if (b->isitme(a)) 
        {
            cout << "execute";
        }
        else
        {
            cout<<"not execute";
        }
        return 0;
    } 

10. What does a class in C++ holds?