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

• Question 211:

  What is the expected output of the following program?

  

  A. It prints: 432

  B. It prints: 321

  C. It prints: 4321

  D. It prints: 3210

  Correct Answer: B

• Question 212:

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

  #include

  #include

  using namespace std;

  class A {

  int x;

  protected:

  int y;

  public:

  int z;

  A() { x=1; y=2; z=3; }

  };

  class B : public A {

  public:

  void set() {

  y = 4; z = 2;

  }

  void Print() {

  cout << y << z;

  }

  };

  int main () {

  B b;

  b.set();

  b.Print();

  return 0;

  }

  A. It prints: 42

  B. It prints: 44

  C. It prints: 22

  D. It prints: 2

  Correct Answer: A

• Question 213:

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

  #include

  using namespace std;

  void set(struct person*);

  struct person

  {

  char name[25];

  int age;

  };

  int main()

  {

  struct person e = {"Steve", 30};

  set(ande);

  cout<< e.name << " " << e.age;

  return 0;

  }

  void set(struct person *p)

  {

  p?>age = p?>age + 1;

  }

  A. Error: in prototype declaration unknown struct person

  B. Error: in structure

  C. It prints: Steve 31

  D. None of these

  Correct Answer: C

• Question 214:

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

  

  A. It prints: 10

  B. It prints: 2+32+3

  C. It prints: 7

  D. It prints: 22+3

  Correct Answer: D

• Question 215:

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

  

  A. It causes a compilation error

  B. It prints: Tesc failed

  C. .It prints: failed

  D. It prints: Tesc

  Correct Answer: D

• Question 216:

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

  

  A. It prints: 33

  B. It prints: ?1

  C. It prints: ??

  D. It prints: ?3

  Correct Answer: D

• Question 217:

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

  

  A. It prints: T

  B. It prints an empty line

  C. It prints: Tesc

  D. It prints: st

  Correct Answer: C

• Question 218:

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

  #include

  #include

  using namespace std;

  class A {

  protected:

  int y;

  public:

  int x, z;

  A() : x(1), y(2), z(0) {}

  A(int a, int b) : x(a), y(b) { z = x * y;}

  void Print() { cout << z; }

  };

  class B : public A {

  public:

  int y;

  B() : A() {}

  B(int a, int b) : A(a,b) {}

  void Print() { cout << z; }

  };

  int main () {

  A b(2,5);

  b.Print();

  return 0;

  }

  A. It prints: 10

  B. It prints: 2

  C. It prints: 5

  D. It prints: 1

  Correct Answer: A

• Question 219:

  Analyze the code below. If it contains an error, indicate its place in the program.

  

  A. Error in the for loop

  B. Error in the break statement

  C. No error

  D. Error in the if statement

  Correct Answer: C

• Question 220:

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

  #include

  using namespace std;

  class BaseC

  {

  public:

  int *ptr;

  BaseC() { ptr = new int(10);}

  BaseC(int i) { ptr = new int(i); }

  ~BaseC() { delete ptr; }

  };

  void fun(BaseC x);

  int main()

  {

  BaseC *o = new BaseC(5);

  fun(*o);

  }

  void fun(BaseC x) { cout << "Hello:"<<*x.ptr; }

  A. It prints: Hello:50

  B. It prints: Hello:10

  C. It prints: Hello:5

  D. Compilation error

  Correct Answer: C