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

• Question 211:

  What will the variable "y" be in class B?

  class A {

  int x;

  protected:

  int y;

  public:

  int age;

  };

  class B : private A {

  string name;

  public:

  void Print() {

  cout << name << age;

  }

  };

  A. public

  B. private

  C. protected

  D. None of these

  Correct Answer: B

• Question 212:

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

  #include

  using namespace std;

  int main()

  {

  float x=3.5,y=1.6;

  int i,j=2;

  i = x + j + y;

  cout << i;

  return 0;

  }

  A. It prints: 7

  B. It prints: 6

  C. It prints: 7,1

  D. Compilation error

  Correct Answer: A

• Question 213:

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

  #include

  using namespace std;

  int main(){

  int i = 1;

  if (i==1) {

  cout << i;

  } else {

  cout << i-1;

  }

  return 0;

  }

  A. It prints: 0

  B. It prints: 1

  C. It prints: -1

  D. It prints: 2

  Correct Answer: B

• Question 214:

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

  #include

  using namespace std;

  class complex{

  double re, im;

  public:

  complex() : re(1),im(0.4) {}

  complex operator+(complex andt);

  void Print() { cout << re << " " << im; }

  };

  complex complex::operator+ (complex andt){

  complex temp;

  temp.re = this?>re + t.re;

  temp.im = this?>im + t.im;

  return temp;

  }

  int main(){

  complex c1,c2,c3;

  c3 = c1 + c2;

  c3.Print();

  }

  A. It prints: 1 0.4

  B. It prints: 2 0.8

  C. It prints: 0 0

  D. Garbage value

  Correct Answer: B

• Question 215:

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

  #include

  using namespace std;

  void fun(int);

  int main()

  {

  int a=0;

  fun(a);

  return 0;

  }

  void fun(int n)

  {

  if(n < 2)

  {

  fun(++n);

  cout << n;

  }

  }

  A. It prints: 21

  B. It prints: 012

  C. It prints: 0

  D. None of these

  Correct Answer: A

• Question 216:

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

  #include

  using namespace std;

  int s(int n);

  int main()

  {

  int a;

  a = 3;

  cout << s(a);

  return 0;

  }

  int s(int n)

  {

  if(n == 0) return 1;

  return s(n?1)*n;

  }

  A. It prints: 4

  B. It prints: 6

  C. It prints: 3

  D. It prints: 0

  Correct Answer: B

• Question 217:

  What will be the output of the program?

  #include

  using namespace std;

  int fun(int);

  int main()

  {

  cout << fun(5);

  return 0;

  }

  int fun(int i)

  {

  return i*i;

  }

  A. 25

  B. 5

  C. 0

  D. 1

  Correct Answer: A

• Question 218:

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

  #include

  #include

  using namespace std;

  class complex{

  double re, im;

  public:

  complex() : re(1),im(0.4) {}

  complex operator?(complex andt);

  void Print() { cout << re << " " << im; }

  };

  complex complex::operator? (complex andt){

  complex temp;

  temp.re = this?>re ? t.re;

  temp.im = this?>im ? t.im;

  return temp;

  }

  int main(){

  complex c1,c2,c3;

  c3 = c1 ? c2;

  c3.Print();

  }

  A. It prints: 1 0.4

  B. It prints: 2 0.8

  C. It prints: 0 0

  D. It prints: 1 0.8

  Correct Answer: C

• Question 219:

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

  #include

  using namespace std;

  class complex{

  double re;

  double im;

  public:

  complex() : re(0),im(0) {}

  complex(double x) { re=x,im=x;};

  complex(double x,double y) { re=x,im=y;}

  void print() { cout << re << " " << im;}

  };

  int main(){

  complex c1;

  c1 = 3.0;

  c1.print();

  return 0;

  }

  A. It prints: 0 0

  B. It prints: 1 1

  C. It prints: 3 3

  D. Compilation error

  Correct Answer: C

• Question 220:

  What will the variable "age" be in class B?

  class A {

  int x;

  protected:

  int y;

  public:

  int age;

  A () { age=5; };

  };

  class B : public A {

  string name;

  public:

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

  void Print() {

  cout << name << age;

  }

  };

  A. public

  B. private

  C. protected

  D. None of these

  Correct Answer: A