Question

This is my Final Multiple Choice section of my Final Exam Please answer ABCD and neatly please and thank you and all questions are with microsoft visual studio c++.

MULTIPLE CHOICE. Choose ONLY ONE alternative that best completes the statement or answers the question.

1) Which of the following statements are correct? 1) _______

A) char charArray[2][] = {{'a', 'b'}, {'c', 'd'}}; B) char charArray[2][2] = {{'a', 'b'}, {'c', 'd'}};

C) char charArray[][] = {{'a', 'b'}, {'c', 'd'}};D) char charArray[][] = {'a', 'b'};

2) Which of the following function declaration is correct?2) _______

A) int f(int a[][], int rowSize, int columnSize);

B) int f(int a[][3], int rowSize);

C) int f(int[][] a, int rowSize, int columnSize);

D) int f(int a[3][], int rowSize);

3) What is the output of the following code?

#include <iostream>

using namespace std;

int main()

{

int matrix[4][4] =

{{1, 2, 3, 4},

{4, 5, 6, 7},

{8, 9, 10, 11},

{12, 13, 14, 15}};

int sum = 0;

for (int i = 0; i < 4; i++)

cout << matrix[1][i] << " ";

return 0;

} 3) _______

A) 2 5 9 13 B) 1 2 3 4 C) 4 5 6 7 D) 1 3 8 12 E) 3 6 10 14

4) The keyword ________ is required to declare a class. 4) _______

A) static B) private C) class D) friend E) public

5) When invoking a function with a reference object parameter, ________ is passed. 5) _______

A) the object is copied, then the reference of the copied object

B) a copy of the object

C) the reference of the object

D) the contents of the object

6) You should add the static keyword in the place of ? in which of the following function:

#include <iostream>

using namespace std;

class Test

{

public:

? int square(int n)

{

return n * n;

}

? int getAge()

{

return age;

}

private:

int age;

}; 6) _______

A) in the getAge function

B) in the square function

C) in both lthe square function and the getAge function

D) none

7) If you define the swap function as follows:

template<typename T>

void swap(T &var1, T &var2)

{

T temp = var1;

var1 = var2;

var2 = temp;

}

You can invoke swap using ________. 7) _______

A) int v1 = 1; double v2 = 2; swap(v1, v2); B) swap(1, 2)

C) int v1 = 1; int v2 = 2; swap(&v1, &v2);D) int v1 = 1; int v2 = 2; swap(v1, v2);

8) To open a file in c:\example\scores.txt on Windows, you use ________. 8) _______

A) stream.open("scores.txt"); B) stream.open("c:\example\scores.txt");

C) stream.open("\example\scores.txt"); D) stream.open("c:\\

9) What is the output of the following code?

#include <iostream>

#include <fstream>

using namespace std;

int main()

{

ofstream output;

// Create a file

output.open("scores.txt");

// Write two lines

output << "John" << " " << "T" << " " << "Smith"

<< " " << 90 << endl;

output << "Eric" << " " << "K" << " " << "Jones"

<< " " << 85;

output.close();

ifstream input;

// Open a file

input.open("scores.txt");

// Read data

char firstName[80];

char mi;

char lastName[80];

int score;

input >> firstName >> mi >> lastName >> score;

double sum = score;

input >> firstName >> mi >> lastName >> score;

sum += score;

cout << "Total score is " << sum << endl;

input.close();

return 0;

} 9) _______

A) Total score is 90 B) Total score is 175

C) Total score is 0 D) Total score is 85

10) What is the printout of the following code?

#include <iostream>

#include "Rational.h"

using namespace std;

int main()

{

Rational r1(1, 2);

Rational r2(2, 4);

cout << r1.equals(r2);

return 0;

}

10) ______

A) false B) true C) 0 D) 1

11) What is the correct signature for the overloaded >> operator? 11) ______

A) friend istream operator>>(istream &stream, Rational &rational);

B) friend istream &operator>>(istream &stream, Rational &rational);

C) friend istream &operator>>(istream &stream, const Rational &rational);

D) friend istream operator>>(istream &stream, const Rational &rational);

12) What is the correct signature for the overloaded unary operator +? 12) ______

A) Rational Rational::operator(+)(const Rational &r)

B) Rational Rational::operator+()

C) Rational Rational::operator+(const Rational &r)

D) Rational Rational::operator<+>(const Rational &r)

13) To know whether the I/O operation succeeded, you use the function ________. 13) ______

A) stream.bad()

B) stream.good()

C) stream.fail()

D) stream.eof()

E) stream.clear()

14) To know whether it is the end of a file, you use the function ________. 14) ______

A) stream.fail()

B) stream.bad()

C) stream.clear()

D) stream.good()

E) stream.eof()

15) Are the constructors inherited by the derived class? 15) ______

A) Yes B) No

16) Are the destructors inherited by the derived class? 16) ______

A) Yes B) No

17) What is the printout of the following code?

#include <iostream>

using namespace std;

class C

{

public:

string toString()

{

return "C";

}

};

class B: public C

{

string toString()

{

return "B";

}

};

class A: public B

{

string toString()

{

return "A";

}

};

void displayObject(C *p)

{

cout << p->toString();

}

int main()

{

displayObject(&A());

displayObject(&B());

displayObject(&C());

return 0;

} 17) ______

A) ABC B) AAAC) CCC D) CBAE) BBB

18) What is the printout of the following code?

#include <iostream>

using namespace std;

class C

{

public:

virtual string toString()

{

return "C";

}

};

class B: public C

{

string toString()

{

return "B";

}

};

class A: public B

{

string toString()

{

return "A";

}

};

void displayObject(C *p)

{

cout << p->toString();

}

int main()

{

displayObject(&A());

displayObject(&B());

displayObject(&C());

return 0;

} 18) ______

A) BBB B) ABC C) CCC D) CBAE) AAA

19) What is the printout of the following code?

#include <iostream>

using namespace std;

class C

{

public:

string toString()

{

return "C";

}

};

class B: public C

{

string toString()

{

return "B";

}

};

class A: public B

{

virtual string toString()

{

return "A";

}

};

void displayObject(C *p)

{

cout << p->toString();

}

int main()

{

displayObject(&A());

displayObject(&B());

displayObject(&C());

return 0;

} 19) ______

A) BBB B) CCC C) CBA D) ABC E) AAA

20) If you enter 1 0, what is the output of the following code?

#include <iostream>

using namespace std;

int main()

{

// Read two intergers

cout << "Enter two integers: ";

int number1, number2;

cin >> number1 >> number2;

try

{

if (number2 == 0)

throw number1;

cout << number1 << " / " << number2 << " is "

<< (number1 / number2) << endl;

cout << "C" << endl;

}

catch (int e)

{

cout << "A" << endl;

}

cout << "B" << endl;

return 0;

} 20) ______

A) C B) AB C) A D) B

21) Suppose Exception2 is derived from Exception1. Analyze the following code.

try {

statement1;

statement2;

statement3;

}

catch (Exception1 ex1)

{

}

catch (Exception2 ex2)

{

}

21) ______

A) The program has a runtime error because these two catch blocks are in wrong order.

B) The program has a syntax error because these two catch blocks are in wrong order.

C) If an exception of the Exeception2 type occurs, this exception is caught by the first catch block.

D) If an exception of the Exeception2 type occurs, this exception is caught by the second catch block.

22) Which of the following statements are true? 22) ______

A) A custom exception class must always be derived from class exception.

B) A custom exception class must always be derived from a derived class of class exception.

C) A custom exception class is just like a regular class.

D) A custom exception class must always be derived from class runtime_error.

23) If you are not interested in the contents of an exception object, the catch block parameter may be omitted. 23)

______

A) True B) False

24) What is wrong in the following code?

vector<int> v;

v[0] = 2.5;

24) ______

A) The program has a runtime error because there are no elements in the vector.

B) The program has a syntax error because there are no elements in the vector.

C) The program has a syntax error because you cannot assign a double value to v[0].

D) The program has a runtime error because you cannot assign a double value to v[0].

25) Which of the following is an abstract function? 25) ______

A) virtual double getArea(); B) virtual double getArea();

C) double getArea() = 0;D) virtual double getArea() = 0;

26) Suppose class A is derived from B and both A and B have no-arg constructors. To invoke B's constructor from A, use

________. 26) ______

A) A(): { B(); ... } B) B(): { A(); ... } C) B(): A() { ... } D) A(): B() { ... }

27) Suppose that statement2 throws an exception of type Exception2 in the following statement:

try {

statement1;

statement2;

statement3;

}

catch (Exception1 ex1)

{

}

catch (Exception2 ex2)

{

}

catch (Exception3 ex3)

{

Statement4;

throw;

}

statement5;

Which statements are executed after statement2 is executed? 27) ______

A) statement5

B) statement4

C) statement1

D) statement2

E) statement3

28) If a parameter is a reference variable, this parameter becomes an alias for the original variable. This is referred to as

________. 28) ______

A) pass by reference B) function invocation

C) pass by name D) pass by value

29) Each time a function is invoked, the system stores parameters and local variables in an area of memory, known as

________, which stores elements in last-in first-out fashion. 29) ______

A) storage area B) a stack C) a heap D) an array

30) Analyze the following code:

#include <iostream>

using namespace std;

int xfunction(int n, long t)

{

cout << "int";

return n;

}

long xfunction(long n)

{

cout << "long";

return n;

}

int main()

{

cout << xfunction(5);

}

30) ______

A) The program runs fine but displays nothing.

B) The program displays int followed by 5.

C) The program displays long followed by 5.

D) The program does not compile because the compiler cannot distinguish which xfunction to invoke.

Answer 1

Hello i am answering your question hope this will be helpful to you kindly give a thumbs up if it helps you and if you have any doubt regarding the solution do comment.as per the HomeworkLib policy i am bounded to do 1 question of for sub part of the same question so i will answer accordingly for you  1 ,2 , 3 , 4 as you have mentioned.

Answer 1 ) The Answer will be Option B (char charArray[2][2] = {{'a', 'b'}, {'c', 'd'}};)As other have wrong syntax.

Answer 2) The Correct Option is B) int f(int a[][3], int rowSize);

Answer 3) The Output will be C) 4 5 6 7 (As in Cout we are printing 2nd Row)

Answer 4) the correct option is  C) class (class Keyword is used to represent a class)

Happy to help :)