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

• Question 201:

  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(1,2);

  c1.print();

  return 0;

  }

  A. It prints: 1 0

  B. It prints: 1 1

  C. It prints: 1 2

  D. Compilation error

  Correct Answer: C

• Question 202:

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

  #include

  using namespace std;

  int fun(int x) {

  return x<<2;

  }

  int main(){

  int i;

  i = fun(1) / 2;

  cout << i;

  return 0;

  }

  A. It prints: 0

  B. It prints: 1

  C. It prints: 2

  D. It prints: 4

  Correct Answer: C

• Question 203:

  What will the variable "age" 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 204:

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

  #include

  using namespace std;

  int x=5;

  static int y;

  int i=0;

  void static myFunction()

  {

  y=x++ + ++i;

  }

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

  {

  x++;

  myFunction();

  cout<

  }

  A. Compilation fails

  B. It prints: 5 5 0

  C. It prints: 7 7 1

  D. It prints: 6 5 1

  Correct Answer: C

• Question 205:

  What is the output of the program?

  #include

  using namespace std;

  int main()

  {

  int tab[4]={10,20,30,40};

  tab[1]=10;

  int *p;

  p=andtab[0]; cout<<*p;

  return 0; }

  A. It prints: 10

  B. It prints: 20

  C. It prints: 11

  D. It prints: 30

  Correct Answer: A

• Question 206:

  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(1) and 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 207:

  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 208:

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

  #include

  #include

  using namespace std;

  float* sum(float a,float b);

  float* sum(float a,float b)

  {

  float *f = new float;

  *f = a+b;

  return f;

  }

  int main()

  {

  float a,b,*f;

  a = 1.5; b = 3.4;

  f = sum(a,b);

  cout<<*f;

  return 0;

  }

  A. It prints: 0

  B. It prints: 4.9

  C. It prints: 5

  D. It prints: 4

  Correct Answer: B

• Question 209:

  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 210:

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

  using namespace std;

  #define FUN(arg) if(arg) cout<<"Test";

  int main()

  {

  int i=1;

  FUN(i<3);

  return 0;

  }

  A. It prints: 0

  B. It prints: T

  C. It prints: T0

  D. It prints: Test

  Correct Answer: D