C++ Institute C++ Institute Certifications CPA-21-02 Questions & Answers

• Question 71:

  What is the output of the program if characters 't', 'e', 's' and 't' enter are supplied as input?

  #include

  #include

  using namespace std;

  int main()

  string s;

  getline( cin, s );

  cout << s << " " << s.length();

  return( 0 );

  }

  A. It prints: test 4

  B. It prints: test

  C. It prints: test 5

  D. It prints: 4

  Correct Answer: A

• Question 72:

  Which of the following is a logical operator?

  A. and

  B. andand

  C. ||

  D. !

  Correct Answer: BCD

• Question 73:

  What happens when you attempt to compile and run the following code?

  #include

  using namespace std;

  class A {

  public:

  virtual void Print()=0;

  };

  class B:public A {

  public:

  virtual void Print() { cout<< "B"; }

  };

  class C:public A {

  public:

  virtual void Print() { cout<< "C"; }

  };

  int main()

  {

  B ob2;

  C ob3;

  A *obj;

  obj = andob2;

  obj?>Print();

  obj = andob3;

  obj?>Print();

  }

  A. It prints: BC

  B. It prints: CB

  C. It prints: CC

  D. It prints: BB

  Correct Answer: A

• Question 74:

  Given:

  #include

  #include

  using namespace std;

  int main () {

  try

  {

  int * myarray= new int[1000];

  }

  catch (bad_allocand)

  {

  cout << "Error allocating memory";

  }

  catch (exceptionand e)

  {

  cout << "Standard exception";

  }

  catch (...)

  {

  cout << "Unknown exception";

  }

  return 0;

  }

  What will happen if we use the operator "new" and the memory cannot be allocated?

  A. It prints: Error allocating memory

  B. It prints: Standard exception

  C. It prints: Unknown exception

  D. Compilation error

  Correct Answer: A

• Question 75:

  What happens when you attempt to compile and run the following code?

  #include

  using namespace std;

  class A

  {

  public:

  virtual void Print(){ cout<<"A";}

  };

  class B:public A

  {

  public:

  void Print(){ cout<< "B";}

  };

  int main()

  {

  A *obj;

  A ob1;

  obj = andob1;

  obj?>Print();

  B ob2;

  obj = andob2;

  obj?>Print();

  }

  A. It prints: AB

  B. It prints: AA

  C. It prints: BA

  D. It prints: BB

  Correct Answer: A

• Question 76:

  What happens when you attempt to compile and run the following code?

  #include

  using namespace std;

  class A

  {

  public:

  void Print(){ cout<<"A";}

  };

  class B:public A

  {

  public:

  virtual void Print(){ cout<< "B";}

  };

  int main()

  {

  A *obj;

  A ob1;

  obj = andob1;

  obj?>Print();

  B ob2;

  obj = andob2;

  obj?>Print();

  }

  A. It prints: AB

  B. It prints: AA

  C. It prints: BA

  D. It prints: BB

  Correct Answer: B

• Question 77:

  What happens when you attempt to compile and run the following code?

  #include

  using namespace std;

  void fun(int*);

  int main()

  {

  int i=2;

  fun(andi);

  cout<

  return 0;

  }

  void fun(int *i)

  {

  *i = *i**i;

  }

  A. It prints: 1

  B. It prints: 4

  C. It prints: 10

  D. It prints: 0

  Correct Answer: B

• Question 78:

  Which statement should be added in the following program to make work it correctly?

  using namespace std;

  int main (int argc, const char * argv[])

  {

  cout<<"Hello";

  }

  A. #include

  B. #include

  C. #include

  D. #include

  Correct Answer: C

• Question 79:

  Point out an error in the program.

  #include

  using namespace std;

  int main()

  {

  char s1[] = "Hello";

  char s2[] = "world";

  char *const ptr = s1;

  *ptr = 'a';

  ptr = s2;

  return 0;

  }

  A. No error

  B. Cannot modify a const object

  C. Compilation error at line 9

  D. None of these

  Correct Answer: BC

• Question 80:

  What happens when you attempt to compile and run the following code?

  #include

  using namespace std;

  #include

  using namespace std;

  class First

  {

  public:

  void Print(){ cout<<"from First";}

  };

  int main()

  {

  First t[2];

  for (int i=0; i<2; i++)

  t[i].Print();

  }

  A. It prints: from First

  B. It prints: from Firstfrom First

  C. Compilation error

  D. Runtime error.

  Correct Answer: B