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

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

• Question 71:

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

  #include

  using namespace std;

  int min(int a, int b);

  int main()

  {

  int min(int,int);

  int b;

  b = min(10,20);

  cout << b;

  return 0;

  }

  int min(int a, int b)

  {

  return(b);

  }

  A. It prints: 20
  B. It prints: 10
  C. It prints: 1020
  D. It prints: 2010
  A. It prints: 20

• Question 72:

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

  #include

  #include

  using namespace std;

  struct Person {

  string name;

  int age;

  };

  class First

  {

  Person *person;

  public:

  First() {person = new Person;

  person?>name = "John";

  person?>age = 30;

  }

  void Print(){

  cout<name << " "<< person?>age;

  }

  };

  int main()

  {

  First t[2];

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

  t[i].Print();

  }

  A. It prints: 30
  B. It prints: John
  C. It prints: John 31
  D. It prints: John 30John 30
  D. It prints: John 30John 30

• Question 73:

  What will the variable "y" be in class B?

  class A {

  int x;

  protected:

  int y;

  public:

  int age;

  };

  class B : protected A {

  string name;

  public:

  void Print() {

  cout << name << age;

  }

  };

  A. public
  B. private
  C. protected
  D. None of these
  C. protected

• Question 74:

  What will variable "y" be in class B?

  class A {

  int x;

  protected:

  int y;

  public:

  int age;

  };

  class B : public A {

  string name;

  public:

  void Print() {

  cout << name << age;

  }

  };

  A. public
  B. private
  C. protected
  D. None of these
  C. protected

• Question 75:

  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
  A. It prints: 43210?1

• Question 76:

  Which code, inserted at line 10, generates the output "2?1"?

  #include

  #include

  using namespace std;

  class A {

  protected:

  int y;

  public:

  int z;

  };

  //insert code here

  public:

  void set() {

  y = 2;

  z = 3;

  }

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

  };

  int main () {

  B b;

  b.set();

  b.z

  = ?1; b.Print(); return 0; }

  A. class B : private A {
  B. class B : public A {
  C. class B : protected A {
  D. class B {
  B. class B : public A {

  ---

  Explanation/Reference:

• Question 77:

  Which of the following statements are correct?

  A. A function can be defined inside another function
  B. A function may have any number of return statements each returning different values.
  C. A function can return floating point value
  D. In a function two return statements should never occur.
  B. A function may have any number of return statements each returning different values.
  C. A function can return floating point value

• Question 78:

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

  #include

  using namespace std;

  int main(){

  int i = 1;

  if (i==1) {

  cout << i;

  } else {

  cout << i-1;

  }

  return 0;

  }

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

• Question 79:

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

  #include

  using namespace std;

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

  {

  int a = 30, b = 1, c = 5, i=10;

  i = b < a < c;

  cout << i;

  return 0;

  }

  A. compilation fails
  B. It prints: 10
  C. It prints: 0
  D. It prints: 1
  D. It prints: 1

• Question 80:

  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
  C. 0510