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

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

• Question 61:

  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
  A. It prints: Helloworld

• Question 62:

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

  #include

  using namespace std;

  namespace myNamespace1

  {

  int x = 5;

  int y = 10;

  }

  namespace myNamespace2

  {

  float x = 3.14;

  float y = 1.5;

  }

  int main () {

  {

  using namespace myNamespace1;

  cout << x << " ";

  }{

  using namespace myNamespace2;

  cout << y;

  }

  return 0;

  }

  A. It prints: 5 1.5
  B. It prints: 3.14 10
  C. Compilation error
  D. None of these
  A. It prints: 5 1.5

• Question 63:

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

  #include

  using namespace std;

  void fun(int*);

  int main()

  {

  int *x;

  int i=2;

  x=andi;

  fun(x);

  cout<

  return 0;

  }

  void fun(int *i)

  {

  *i = *i * *i;

  }

  A. It prints: 2
  B. It prints: 4
  C. It prints: 0
  D. It prints: 1
  B. It prints: 4

• Question 64:

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

  #include

  using namespace std;

  int op(int x, int y)

  {

  return x?y;

  }

  int op(int x, float y)

  {

  return x+y;

  }

  int main()

  {

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

  float f=0.23;

  k = op(i, j);

  l = op(j, f);

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

  return 0;

  }

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

• Question 65:

  What will the variable "age" 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 66:

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

  using namespace std;

  int main()

  {

  int *a= new int;

  *a=100;

  cout << *a;

  delete a;

  }

  A. It prints: 1
  B. It prints: 100
  C. It prints: 0
  D. It prints: 10
  B. It prints: 100

• Question 67:

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

  #include

  #include

  using namespace std;

  string fun(string, string);

  int main()

  {

  string s="Hello";

  cout << fun(s, " World");

  return 0;

  }

  string fun(string s1, string s2)

  {

  return s1+s2;

  }

  A. It will print: Hello World
  B. It will print: Hello
  C. It will print: World
  D. It will print: HW
  A. It will print: Hello World

• Question 68:

  What is the output of the program?

  #include

  #include

  using namespace std;

  int main()

  {

  string s1="World";

  string s2;

  s2="Hello" + s1;

  cout << s2;

  return( 0 );

  }

  A. It prints: HelloWorld
  B. It prints: Hello
  C. It prints: World
  D. Compilation error
  A. It prints: HelloWorld

• Question 69:

  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
  C. It prints: -1

• Question 70:

  Which of the following operators accept integer arguments only? (Choose two.)

  A. |
  B. | |
  C. ~
  D. !
  A. |
  C. ~