Questions and answers for exam Preparation

MCQs

Total Questions : 40 | Page 1 of 4 pages

What will be the output of the following program?

#include
class Base
{
public:
char S, A, M;
Base(char x, char y)
{
S = y - y;
A = x + x;
M = x * x;
}
Base(char, char y = 'A', char z = 'B')
{
S = y;
A = y + 1 - 1;
M = z - 1;
}
void Display(void)
{
cout

A A A
A B A
A B C
Garbage Garbage Garbage
The program will report compile time error.

Discuss Question

Answer: Option A. -> A A A

Question 2.

What will be the output of the following program?

#include
class Base
{
public:
int S, A, M;
Base(int x, int y)
{
S = y - y;
A = x + x;
M = x * x;
}
Base(int, int y = 'A', int z = 'B')
{
S = y;
A = y + 1 - 1;
M = z - 1;
}
void Display(void)
{
cout

65 65 65
65 66 67
A A A
A B C
The program will report compile time error.

Discuss Question

Answer: Option A. -> 65 65 65

Question 3.

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

#include
static double gDouble;
static float gFloat;
static double gChar;
static double gSum = 0;
class BaseOne
{
public:
void Display(double x = 0.0, float y = 0.0, char z = 'A')
{
gDouble = x;
gFloat = y;
gChar = int(z);
gSum = gDouble + gFloat + gChar;
cout

The program will print the output 0.
The program will print the output 120.
The program will report run-time error.
The program will report compile-time error.
The program will print the output garbage value.

Discuss Question

Answer: Option D. -> The program will report compile-time error.

Question 4.

What is correct about the following program?

#include
class Base
{
int x, y, z;
public:
Base()
{
x = y = z = 0;
}
Base(int xx, int yy = 'A', int zz = 'B')
{
x = xx;
y = x + yy;
z = x + y;
}
void Display(void)
{
cout

The program will report compilation error.
The program will run successfully giving the output 66 65.
The program will run successfully giving the output 65 66.
The program will run successfully giving the output 66 65 65 131 196.
The program will produce the output 66 65 infinite number of times (or till stack memory overflow).

Discuss Question

Answer: Option C. -> The program will run successfully giving the output 65 66.

Question 5.

What will be the output of the following program?

#include
class Base
{
int x, y;
public:
Base()
{
x = y = 0;
}
Base(int xx)
{
x = xx;
}
Base(int p, int q = 10)
{
x = p + q;
}objDefault(1, 1);
y = q;
}
void Display(void)
{
cout

3 2
8 3
11 6
11 10
The program will not compile successfully.

Discuss Question

Answer: Option C. -> 11 6

Question 6.

What will be the output of the following program?

#include
class Number
{
int Num;
public:
Number(int x = 0)
{
Num = x;
}
void Display(void)
{
cout 0 ) Modify() ;
if(Dec == 10) cout

Discuss Question

Answer: Option B. -> A0

Question 7.

What will be the output of the following program?

#include
class AreaFinder
{
float l, b, h;
float result;
public:
AreaFinder(float hh = 0, float ll = 0, float bb = 0)
{
l = ll;
b = bb;
h = hh;
}
void Display(int ll)
{
if(l = 0)
result = 3.14f * h * h;
else
result = l * b;
cout

0
314
314.0000
200.0000

Discuss Question

Answer: Option A. -> 0

Question 8.

What is correct about the following program?

#include
class Addition
{
int x;
public:
Addition()
{
x = 0;
}
Addition(int xx)
{
x = xx;
}
Addition operator + (int xx = 0)
{
Addition objTemp;
objTemp.x = x + xx;
return(objTemp);
}
void Display(void)
{
cout

The program will print the output 20.
The program will report run time error.
The program will print the garbage value.
Compilation fails due to 'operator +' cannot have default arguments.

Discuss Question

Answer: Option D. -> Compilation fails due to 'operator +' cannot have default arguments.

Question 9.

What will be the output of the following program?

#include
class BaseCounter
{
protected:
long int count;
public:
void CountIt(int x, int y = 10, int z = 20)
{
count = 0;
cout

30 10 20
Garbage 10 20
40 50 20
20 40 50
40 Garbage Garbage

Discuss Question

Answer: Option C. -> 40 50 20

Question 10.

What will be the output of the following program?

#include
class TestDrive
{
int x;
public:
TestDrive(int xx)
{
x = xx;
}
int DriveIt(void);
};
int TestDrive::DriveIt(void)
{
static int value = 0;
int m;
m = x % 2;
x = x / 2;
if((x / 2)) DriveIt();
value = value + m * 10;
return value;
}
int main()
{
TestDrive TD(1234);
cout