Online C++ Programming Test - C++ Programming Test - Random

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Total number of questions: 20.
Time allotted: 30 minutes.
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Which of the following operators cannot be overloaded?

[]

[#]

Which of the following statement is correct?

A constructor is called at the time of declaration of an object.

A constructor is called at the time of use of an object.

A constructor is called at the time of declaration of a class.

A constructor is called at the time of use of a class.

[#]

Which of the following is not the member of class?

Static function

Friend function

Const function

Virtual function

[#]

Which of the following is an abstract data type?

int

double

string

Class

[#]

Which of the following statements regarding inline functions is correct?

It speeds up execution.

It slows down execution.

It increases the code size.

Both A and C.

[#]

Which of the following statement is incorrect?

The default value for an argument can be a global constant.

The default arguments are given in the function prototype.

Compiler uses the prototype information to build a call, not the function definition.

The default arguments are given in the function prototype and should be repeated in the function definition.

[#]

What will be the output of the following program?

#include<iostream.h> 
class Bix
{
    int x, y; 
    public:
    void show(void);
    void main(void);
};
void Bix::show(void)
{ 
    Bix b;
    b.x = 2;
    b.y = 4;
    cout<< x << " " << y;
}
void Bix::main(void)
{
    Bix b;
    b.x = 6; 
    b.y = 8;
    b.show();
}
int main(int argc, char *argv[])
{
    Bix run;
    run.main();
    return 0; 
}

2 4

6 8

The program will report error on Compilation.

The program will report error on Linking.

The program will report error on Run-time.

[#]

What will be the output of the following program?

#include<iostream.h> 
struct MyData
{
    public:
    int Addition(int a, int b = 10)
    {
        return (a *= b + 2);
    }
    float Addition(int a, float b);
};
int main()
{
    MyData data;
    cout<<data.Addition(1)<<" ";
    cout<<data.Addition(3, 4);
    return 0; 
}

12 12

12 18

3 14

18 12

Compilation fails.

[#]

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

#include<iostream.h>
const double BixConstant(const int, const int = 0);
int main()
{
    const int c = 2 ;
    cout<< BixConstant(c, 10)<< " "; 
    cout<< BixConstant(c, 20)<< endl; 
    return 0;
}
const double BixConstant(const int x, const int y)
{
    return( (y + (y * x) * x % y) * 0.2);
}

The program will print the output 2 4.

The program will print the output 20 40.

The program will print the output 10 20.

The program will print the output 20 4.50.

The program will report compile time error.

[#]

10.

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

#include<iostream.h> 
enum bix
{
    a=1, b, c
};
int main()
{
    int x = c;
    int &y = x;
    int &z = x;
    y = b;
    cout<< z--;
    return 0; 
}

It will result in a compile time error.

The program will print the output 1.

The program will print the output 2.

The program will print the output 3.

[#]

11.

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

#include<iostream.h> 
class Bix
{
    int x, y; 
    public:
    Bix(int x, int y)
    {
        this->x = x;
        this->y = y;
    }
    void Display()
    {
        cout<< x << " " << y;
    }
};
int main()
{
    int x = 50;
    int &y = x ;
    Bix b(y, x);
    return 0; 
}

The program will print the output 50 50.

The program will print the two garbage values.

It will result in a compile time error.

The program will print nothing.

[#]

12.

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

#include<iostream.h> 
enum xyz
{
    a, b, c
};
int main() 
{
    int x = a, y = b, z = c;
    int &p = x, &q = y, &r = z;
    p = ++x;
    q = ++y;
    r = ++c;
    cout<< p << q << r;
    return 0;
}

The program will print the output 1 2 3.

The program will print the output 2 3 4.

The program will print the output 0 1 2.

It will result in a compile time error.

[#]

13.

Which of the following statement is correct regarding destructor of base class?

Destructor of base class should always be static.

Destructor of base class should always be virtual.

Destructor of base class should not be virtual.

Destructor of base class should always be private.

[#]

14.

What will be the output of the following program?

#include<iostream.h>
#include<string.h> 
class IndiaBix
{
    char str[50]; 
    char tmp[50]; 
    public:
    IndiaBix(char *s)
    {
        strcpy(str, s);
    }
    int BixFunction()
    {
        int i = 0, j = 0; 
        while(*(str + i))
        {
            if(*(str + i++) == ' ')
                *(tmp + j++) = *(str + i);
        }
        *(tmp + j) = 0; 
        return strlen(tmp); 
    }
};
int main()
{
    char txt[] = "Welcome to IndiaBix.com!";
    IndiaBix objBix(txt); 
    cout<< objBix.BixFunction();
    return 0;
}

[#]

15.

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

#include<iostream.h> 
class BixBase
{
    int x, y; 
    public:
    BixBase(int xx = 10, int yy = 10)
    {
        x = xx;
        y = yy;
    }
    void Show()
    {
        cout<< x * y << endl;
    }
};
class BixDerived : public BixBase
{
    private:
        BixBase objBase; 
    public:
    BixDerived(int xx, int yy) : BixBase(xx, yy)
    {
        objBase.Show();
    }
};
int main()
{
    BixDerived objDev(10, 20);
    return 0; 
}

The program will print the output 100.

The program will print the output 200.

The program will print the output Garbage-value.

The program will report compile time error.

[#]

16.

A constructor that accepts __________ parameters is called the default constructor.

one

two

three

[#]

17.

Which of the following statements are correct?

Constructor is always called explicitly.

Constructor is called either implicitly or explicitly, whereas destructor is always called implicitly.

Destructor is always called explicitly.

Constructor and destructor functions are not called at all as they are always inline.

[#]

18.

Which of the following gets called when an object is being created?

constructor

virtual function

destructor

main

[#]

19.

Which of the following statement is correct?

A destructor has the same name as the class in which it is present.

A destructor has a different name than the class in which it is present.

A destructor always returns an integer.

A destructor can be overloaded.

[#]

20.

What is the technical word for the function ~IndiaBix() defined in the following program?

#include<iostream.h> 
class IndiaBix
{
    int x, y; 
    public:
    IndiaBix(int xx = 10, int yy = 20 )
    {
        x = xx; 
        y = yy;
    }
    void Display()
    {
        cout<< x << " " << y << endl;
    } 
    ~IndiaBix()
    { } 
};
int main()
{
    IndiaBix objBix; 
    objBix.Display(); 
    return 0;
}

Constructor

Destructor

Default Destructor

Function Template

[#]

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