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

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

• Question 131:

  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: 0
  D. It prints: My exception,
  B. It causes a compilation error

• Question 132:

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

  #include

  using namespace std;

  int main()

  {

  int *t; t = new int[2];

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

  t[i]=0;

  }

  cout << t[1];

  }

  A. It prints: 0
  B. It prints: 1
  C. It prints: 2
  D. It prints: 3
  A. It prints: 0

• Question 133:

  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
  C. It prints: 23

  ---

  Explanation/Reference:

• Question 134:

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

  #include

  using namespace std;

  int op(int x, int y)

  {

  int i;

  i = x + y;

  return i;

  }

  int main()

  {

  int i=1, j=2, k, l;

  k = op(i, j);

  l = op(j, i);

  cout<< k << "," << l;

  return 0;

  }

  A. It prints: 1,2
  B. It prints: ?1,1
  C. It prints: 1,1
  D. It prints: 3,3
  D. It prints: 3,3

• Question 135:

  Which code, inserted at line 5, generates the output "ABC"?

  #include

  using namespace std;

  class A {

  public:

  //insert code here

  };

  class B:public A {

  public:

  void Print(){ cout<< "B"; }

  };

  class C:public B {

  public:

  void Print(){ cout<< "C"; }

  };

  int main()

  {

  B ob2;

  C ob3;

  A *obj;

  obj = andob1;

  obj?>Print();

  obj = andob2;

  obj?>Print();

  obj = andob3;

  obj?>Print();

  }

  A. void Print(){ cout
  B. virtual void Print(){ cout
  C. virtual void Print(string s){ cout
  D. None of these
  B. virtual void Print(){ cout

• Question 136:

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

  #include

  using namespace std;

  int main()

  {

  int i=2;

  switch(i)

  {

  case 1:

  cout<<"Hello";

  case 2:

  cout<<"world";

  case 3:

  cout<<"End";

  } return 0;

  }

  A. It prints: Hello
  B. It prints: world
  C. It prints: worldEnd
  D. It prints: End
  C. It prints: worldEnd

• Question 137:

  What will be the output of the program?

  #include

  using namespace std;

  int main()

  {

  int i=0;

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

  cout << i;

  return 0;

  }

  A. 012345
  B. 0123
  C. 5
  D. 6
  A. 012345

• Question 138:

  How many times will the program print "HELLO" ?

  #include

  using namespace std;

  int main()

  {

  cout<<"HELLO";

  main();

  return 0;

  }

  A. 65536
  B. 32769
  C. 1
  D. Till stack overflows
  D. Till stack overflows

• Question 139:

  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
  B. private

• Question 140:

  What is the output of the program?

  #include

  #include

  using namespace std;

  int main () {

  string s1 = "Hello", s2 = "World";

  s2 = s1 + s2;

  cout << s2;

  return 0;

  }

  A. It prints: Hello
  B. It prints: HelloWorld
  C. It prints: WorldHello
  D. It prints: WorldHelloWorld
  B. It prints: HelloWorld