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

• Question 51:

  Which code, inserted at line 14, generates the output "3.14 10"?

  #include

  using namespace std;

  namespace myNamespace1

  int x = 5;

  int y = 10;

  } namespace myNamespace2 { float x = 3.14; float y = 1.5; } int main () { //insert code here cout << x << " " << y; return 0; }

  A. using myNamespace2::y; using myNamespace1::x;

  B. using namespace myNamespace1;

  C. using namespace myNamespace1; using namespace myNamespace2;

  D. using myNamespace1::y; using myNamespace2::x;

  Correct Answer: D

• Question 52:

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

  #include

  using namespace std;

  int main()

  {

  const char *s;

  char str[] = "Hello ";

  s = str;

  while(*s) {

  cout << *++s;

  *s++;

  }

  return 0;

  }

  A. It will print:"el "

  B. The code will not compile.

  C. It will print:"Hello "

  D. It will print garbage value

  Correct Answer: A

• Question 53:

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

  #include

  using namespace std;

  int main()

  {

  int x,y=10;

  float f;

  f = 5.20;

  x=(int) f;

  cout << x <<", ";

  f=float (y);

  cout << f;

  return 0;

  }

  A. It prints: 5, 10

  B. It prints: 5.2, 10

  C. It prints: 5.20, 10.0

  D. It prints: 5.2, 10.00

  Correct Answer: A

• Question 54:

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

  #include

  using namespace std;

  int main(){

  int i = 1;

  for(i=10; i>-1; i/=2) {

  if(!i)

  break;

  }

  cout << i;

  return 0;

  }

  A. It prints: 0

  B. It prints: 1

  C. It prints: -1

  D. Compilation error

  Correct Answer: A

• Question 55:

  What is the output of the program given below?

  #include

  using namespace std;

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

  {

  int i=10;

  {

  int i=0;

  cout<

  }

  {

  int i=5;

  cout << i;

  }

  cout<

  return 0;

  }

  A. 1010

  B. 101010

  C. 0510

  D. None of these

  Correct Answer: C

• Question 56:

  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;

  };

  class B : public A {

  string name;

  public:

  void set() {

  y = 2;

  z = 3;

  }

  void Print() { cout << y << z; }

  };

  int main () {

  B b;

  b.set();

  b.Print();

  return 0;

  }

  A. It prints: 123

  B. It prints: 000

  C. It prints: 23

  D. It prints: 12

  Correct Answer: C

• Question 57:

  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

• Question 58:

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

  #include

  using namespace std;

  #define DEF_A 0

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

  cout << DEF_A;

  return 0;

  }

  A. It prints: 1

  B. It prints: 0

  C. It prints: ?1

  D. Compilation error

  Correct Answer: B

• Question 59:

  What happens if character 3 is entered as input?

  #include

  class A {

  public:

  int i;

  };

  int main () {

  int c;

  A obj;

  obj.i = 5;

  cin >> c;

  try

  {

  switch (c)

  {

  case A. throw 20;

  case B. throw 5.2f;

  case C. throw obj;

  default: cout<<"No exception";

  }

  }

  catch (int e)

  { cout << "int exception. Exception Nr. " << e; }

  catch (A e)

  { cout << "object exception. Exception Nr. " << e.i; }

  catch (...)

  { cout << "An exception occurred."; }

  return 0;

  }

  A. It prints: object exception. Exception Nr. 5

  B. It prints: int exception. Exception Nr.

  C. It prints: An exception occurred

  D. It prints: No exception

  Correct Answer: A

• Question 60:

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

  #include

  using namespace std;

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

  char *s = "ABCDEF";

  cout << s+2;

  return 0;

  }

  A. It prints: CDEF

  B. It prints: ABCDEF

  C. It prints: BCDEF

  D. None of these

  Correct Answer: A