C++ Programming - Objects and Classes

Exercise :: Objects and Classes - Programs

1. 

What will be the output of the following program?

#include<iostream.h> 
class Bix
{
    public:
      int x;
};
int main()
{
    Bix *p = new Bix();

    (*p).x = 10;
    cout<< (*p).x << " " << p->x << " " ;

    p->x = 20;
    cout<< (*p).x << " " << p->x ;

    return 0;
}

A. 10 10 20 20
B. Garbage garbage 20 20
C. 10 10 Garbage garbage
D. Garbage garbage Garbage garbage

Answer: Option A

Explanation:

No answer description available for this question. Let us discuss.

2. 

Which of the following statement is correct about the program given below?

#include<iostream.h> 
class IndiaBix
{
    static int x; 
    public:
    static void SetData(int xx)
    {
        x = xx; 
    }
    void Display() 
    {
        cout<< x ;
    }
};
int IndiaBix::x = 0; 
int main()
{
    IndiaBix::SetData(33);
    IndiaBix::Display();
    return 0; 
}

A. The program will print the output 0.
B. The program will print the output 33.
C. The program will print the output Garbage.
D. The program will report compile time error.

Answer: Option D

Explanation:

No answer description available for this question. Let us discuss.

3. 

Which of the following statement is correct about the program given below?

#include<iostream.h> 
class IndiaBix
{
    static int x; 
    public:
    static void SetData(int xx)
    {
        x = xx; 
    }
    static void Display() 
    {
        cout<< x ;
    }
};
int IndiaBix::x = 0; 
int main()
{
    IndiaBix::SetData(44);
    IndiaBix::Display();
    return 0; 
}

A. The program will print the output 0.
B. The program will print the output 44.
C. The program will print the output Garbage.
D. The program will report compile time error.

Answer: Option B

Explanation:

No answer description available for this question. Let us discuss.

4. 

What will be the output of the following program?

#include<iostream.h> 
class BixTeam
{
    int x, y; 
    public:
    BixTeam(int xx)
    {
        x = ++xx;
    }
    void Display()
    {
        cout<< --x << " ";
    }
};
int main()
{
    BixTeam objBT(45);
    objBT.Display();
    int *p = (int*)&objBT;
    *p = 23;
    objBT.Display();
    return 0; 
}

A. 45 22
B. 46 22
C. 45 23
D. 46 23

Answer: Option A

Explanation:

No answer description available for this question. Let us discuss.

5. 

Which of the following statement is correct about the program given below?

#include<iostream.h> 
class IndiaBix
{
    static int x; 
    public:
    static void SetData(int xx)
    {
        this->x = xx; 
    }
    static void Display() 
    {
        cout<< x ;
    }
};
int IndiaBix::x = 0; 
int main()
{
    IndiaBix::SetData(22);
    IndiaBix::Display();
    return 0; 
}

A. The program will print the output 0.
B. The program will print the output 22.
C. The program will print the output Garbage.
D. The program will report compile time error.

Answer: Option D

Explanation:

No answer description available for this question. Let us discuss.