C++ Institute C++ Certified Professional Programmer CPA Questions & Answers

• Question 41:

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

  #include

  using namespace std;

  int main()

  {

  int i=2;

  switch(i)

  {

  case 1:

  cout<<"Hello";

  break;

  case 2:

  cout<<"world";

  break;

  case 3:

  printf("End");

  break;

  }

  return 0;

  }

  A. It prints: Hello

  B. It prints: world

  C. It prints: End

  D. It prints: E

  Correct Answer: B

• Question 42:

  What is the output of the program if characters 'h', 'e', 'l', 'l' , 'o' and enter are supplied as input?

  #include

  #include

  using namespace std;

  void f();

  int main()

  {

  f();

  return 0;

  }

  void f()

  {

  char c;

  c = cin.get();

  cout << c;

  if(c != '\n')

  f();

  }

  A. It prints: hello

  B. It prints: olleh

  C. It prints: h

  D. It prints: o

  Correct Answer: A

• Question 43:

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

  #include

  #include

  using namespace std;

  class Base

  {

  string s;

  public:

  Base() { s="Sample text";}

  Base(string s) { this?>s=s; }

  void Print() { cout << s; }

  };

  int main()

  {

  Base *o = new Base();

  o?>Print();

  }

  A. It prints: Sample text

  B. It prints: Sample

  C. It prints: text

  D. None of these

  Correct Answer: A

• Question 44:

  What is the output of the program?

  #include

  using namespace std;

  class BaseC

  {

  int i;

  public:

  BaseC() { i=?1;}

  BaseC(int i) { i=i; }

  void seti(int a) { i = a; };

  void Print() { cout << i; }

  };

  int main()

  {

  BaseC *o = new BaseC();

  o?>seti(10);

  o?>Print();

  }

  A. It prints: 10

  B. It prints: ?1

  C. It prints: 0

  D. Compilation error

  Correct Answer: A

• Question 45:

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

  #include #include

  using namespace std;

  int fun(int);

  int main()

  {

  int *x = new int;

  *x=10;

  cout << fun(*x);

  return 0;

  }

  int fun(int i)

  {

  return i*i;

  }

  A. It will print: 100

  B. It will print: 101

  C. It will print: 10

  D. It will print: 1

  Correct Answer: A

• Question 46:

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

  #include

  using namespace std;

  struct Person {

  string name;

  int age;

  };

  class First

  {

  Person *person;

  public:

  First() {person = new Person;

  person?>name = "John";

  person?>age = 30;

  }

  void Print(){

  cout<name << " "<< person?>age;

  }

  };

  int main()

  {

  First t[2];

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

  t[i].Print();

  }

  A. It prints: 30

  B. It prints: John

  C. It prints: John 31

  D. It prints: John 30John 30

  Correct Answer: D

• Question 47:

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

  #include

  using namespace std;

  int fun(int x) {

  return 2*x;

  }

  int main(){

  int i;

  i = fun(0.5) || fun(0);

  cout << i;

  return 0;

  }

  A. It prints: 0

  B. It prints: 1

  C. It prints: -1

  D. Compilation error

  Correct Answer: A

• Question 48:

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

  #include

  #include

  using namespace std;

  class A {

  public:

  int age;

  A () { age=5; };

  };

  class B : private A { string name;

  public:

  B () { name="Bob"; };

  void Print() {

  cout << name << age;

  }

  };

  int main () {

  B b,*ob;

  ob = andb;

  ob?>age = 10;

  ob?>Print();

  return 0;

  }

  A. It prints: Bob55

  B. It prints: Bob1

  C. It prints: 10

  D. Compilation error

  Correct Answer: D

• Question 49:

  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";}

  };

  int main()

  {

  B ob2;

  A *obj;

  obj = andob2;

  obj?>Print();

  }

  A. It prints: B

  B. It prints: A

  C. It prints: AB

  D. It prints: BA

  Correct Answer: A

• Question 50:

  Which of the following is a correct way to define the function fun() in the program below?

  #include

  #include

  #include

  using namespace std;

  int main()

  {

  int a[2][2];

  fun(a);

  return 0;

  }

  A. void fun(int *p[2]) {}

  B. void fun(int *p[2][2]) {}

  C. void fun(int *p[][2]) {}

  D. void fun(int p[][2]) {}

  Correct Answer: D