C++ Institute CPA-21-02 Online Practice Questions and Exam Preparation

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

• Question 201:

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

  #include

  #include

  using namespace std;

  class A {

  public:

  A() { cout << "A no parameters";}

  A(string s) { cout << "A string parameter";}

  A(A anda) { cout << "A object A parameter";}

  };

  class B : public A {

  public:

  B() { cout << "B no parameters";}

  B(string s) { cout << "B string parameter";}

  };

  int main () {

  A a1;

  A a2("Test");

  B b1("Alan");

  return 0;

  }

  A. It prints: A no parametersA string parameterA no parametersB string parameter
  B. It prints: A no parametersB string parameter
  C. It prints: B string parameter
  D. It prints: B no parameter
  A. It prints: A no parametersA string parameterA no parametersB string parameter

• Question 202:

  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
  D. It causes a compilation error

• Question 203:

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

  

  A. It prints: 3
  B. It prints: 4
  C. It prints: 0
  D. It prints: 6
  D. It prints: 6

• Question 204:

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

  

  A. It prints: 1
  B. It causes a compilation error
  C. It prints: -1
  D. It prints: 0
  A. It prints: 1

• Question 205:

  Point out an error in the program.

  #include

  using namespace std;

  int main()

  {

  char s1[] = "Hello";

  char s2[] = "world";

  char *const ptr = s1;

  *ptr = 'a';

  ptr = s2;

  return 0;

  }

  A. No error
  B. Cannot modify a const object
  C. Compilation error at line 9
  D. None of these
  B. Cannot modify a const object
  C. Compilation error at line 9

• Question 206:

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

  #include

  using namespace std;

  #include

  using namespace std;

  class First

  {

  public:

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

  };

  int main()

  {

  First t[2];

  for (int i=0; i<2; i++)

  t[i].Print();

  }

  A. It prints: from First
  B. It prints: from Firstfrom First
  C. Compilation error
  D. Runtime error.
  B. It prints: from Firstfrom First

• Question 207:

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

  #include

  using namespace std;

  class A {

  public:

  int x;

  A() { x=0;}

  };

  class B : protected A {

  public:

  int y;

  using A::x;

  B(int y) {this?>y = y;}

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

  };

  int main () {

  B b(5);

  b.Print();

  return 0;

  }

  A. It prints: 05
  B. It prints: 0
  C. It prints: 5
  D. It prints: 15
  A. It prints: 05

  ---

  Explanation/Reference:

• Question 208:

  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<

  }

  cout<

  return 0;

  }

  A. 1010
  B. 100
  C. 010
  D. None of these
  C. 010

• Question 209:

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

  #include

  using namespace std;

  class BaseC

  {

  int *ptr;

  public:

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

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

  ~BaseC() { delete ptr; }

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

  };

  int main()

  {

  BaseC *o = new BaseC(5);

  o?>Print();

  }

  A. It prints: 5
  B. It prints: 10
  C. It prints: 1
  D. It prints: 0
  A. It prints: 5

• Question 210:

  Which of the following structures are correct?

  1:

  struct s1{

  int x;

  char c;

  };

  2:

  struct s2{

  float f;

  struct s2 *s;

  };

  3:

  struct s3{

  float f;

  in i;

  }

  A. 1
  B. 2
  C. 3
  D. All of these
  A. 1
  B. 2