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

• Question 181:

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

  #include

  using namespace std;

  int main()

  {

  int i = 5;

  do {

  i??;

  cout<

  }

  while(i >= 0);

  return 0;

  }

  A. It prints: 43210?1

  B. It prints: ?1

  C. It prints: 4321

  D. It prints: 1

  Correct Answer: A

• Question 182:

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

  #include

  #include

  using namespace std;

  class SampleClass

  {

  string *s;

  public:

  SampleClass() { s = new string("Text");}

  SampleClass(string s) { this?>s = new string(s);}

  ~SampleClass() { delete s;}

  void Print(){ cout<<*s;}

  };

  int main()

  {

  SampleClass *obj;

  obj = new SampleClass("Test");

  obj?>Print();

  }

  A. It prints: Text

  B. It prints: Test

  C. It prints: TextTest

  D. Garbage value.

  Correct Answer: B

• Question 183:

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

  #include

  using namespace std;

  int main()

  {

  long int x,y=10;

  double d;

  d = 3.99;

  x=(int) d;

  cout << x <<", ";

  d=float (y);

  cout << d;

  return 0;

  }

  A. It prints: 3, 10

  B. It prints: 3.99, 10

  C. It prints: 4, 10.0

  D. It prints: 4, 10

  Correct Answer: A

• Question 184:

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

  #include

  #include

  using namespace std;

  void fun(int i);

  int main()

  {

  int i=0;

  i++;

  for (i=0; i<=5; i++)

  {

  fun(i);

  }

  return 0;

  }

  void fun(int i)

  {

  if (i==3)

  return;

  cout << i;

  }

  A. It prints: 05

  B. It prints: 012345

  C. It prints: 01245

  D. It prints: 0

  Correct Answer: C

• Question 185:

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

  #include

  using namespace std;

  class Base {

  int age;

  public:

  class C {

  int b;

  void PrintC() { cout << b; }

  };

  Base () {age=5;};

  void setAge(int a=20) {age = a;}

  void Print() { cout << age;}

  };

  int main () {

  Base a;

  a.setAge(10);

  a.Print();

  return 0;

  }

  A. It prints: 1020

  B. It prints: 105

  C. It prints: 10

  D. It prints: 20

  Correct Answer: C

• Question 186:

  Which code line inserted instead of the comment below will cause the program to produce the expected output?

  

  A. using namespace myNamespace1; using namespace myNamespace2;

  B. using namespace myNamespace1;

  C. using namespace myNamespace1::y; using myNamespace2::x;

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

  Correct Answer: C

• Question 187:

  What happens if characters 'w', 'o', 'r', 'l' and 'd' are entered as input?

  #include

  #include

  using namespace std;

  int main()

  {

  string s1 = "Hello";

  string s2;

  getline( cin, s2 );

  cout << s1 + s2;

  return( 0 );

  }

  A. It prints: Helloworld

  B. It prints: Hello

  C. It prints: world

  D. Compilation error

  Correct Answer: A

• Question 188:

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

  #include

  using namespace std;

  class First

  {

  public:

  First() { cout << "Constructor";}

  ~First() { cout << "Destructor";}

  void Print(){ cout<<"from First";}

  };

  int main()

  {

  First FirstObject;

  FirstObject.Print();

  }

  A. It prints: Constructorfrom First

  B. It prints: Constructorfrom FirstDestructor

  C. It prints: Constructorfrom FirstDestructorDestructor

  D. Compilation error at line 16

  Correct Answer: B

• Question 189:

  What is the output of the program given below?

  #include

  using namespace std;

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

  {

  float f=?10.501;

  cout<<(int)f;

  }

  A. 0

  B. 11

  C. ?10

  D. ?11

  Correct Answer: C

• Question 190:

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

  

  A. It prints: MaxNiels

  B. It prints: RobertMax

  C. It prints: RobertNiels

  D. It causes a compilation error

  Correct Answer: D