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

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

• Question 81:

  What will be the output of the program?

  #include

  using namespace std;

  int fun(int);

  int main()

  {

  cout << fun(5);

  return 0;

  }

  int fun(int i)

  {

  return i*i;

  }

  A. 25
  B. 5
  D. 1
  A. 25

• Question 82:

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

  #include

  using namespace std;

  int main(){

  int i = 1;

  for(i=10; i>-1; i/=2) {

  if(!i)

  break;

  }

  cout << i;

  return 0;

  }

  A. It prints: 0
  B. It prints: 1
  C. It prints: -1
  D. Compilation error
  A. It prints: 0

• Question 83:

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

  #include

  using namespace std;

  int main()

  {

  int x=2, *y;

  y = andx;

  cout << *y + x;

  return 0;

  }

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

• Question 84:

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

  #include

  #include

  using namespace std;

  class A {

  public:

  int x;

  A() { x=0;}

  A(int x) { this?>x=x;}

  };

  class B : private A {

  public:

  using A::x;

  B() { x=1;}

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

  };

  int main () {

  B c1;

  B c2(?5);

  cout << c1.x;

  cout << c2.x;

  return 0;

  }

  A. It prints: 5
  B. It prints: 1?5
  C. It prints: 05
  D. It prints: 0
  B. It prints: 1?5

• Question 85:

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

  #include

  #include

  using namespace std;

  class A {

  public:

  string s;

  A(string s) { this?>s = s; }

  };

  class B {

  public:

  string s;

  B (A a) { this?>s = a.s; }

  void print() { cout<

  };

  int main()

  {

  A a("Hello world");

  B b=a;

  b.print();

  }

  A. It prints: Hello world
  B. It prints: Hello
  C. Compilation error
  D. None of these
  A. It prints: Hello world

  ---

  Explanation/Reference:

• Question 86:

  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
  B. It causes a compilation error

• Question 87:

  What will be the output of the program?

  #include

  using namespace std;

  int main()

  {

  const int y = 5;

  const x = ?10;

  cout<

  return 0;

  }

  A. ?10 5
  B. 5 ?10
  C. Compilation error
  D. None of these
  C. Compilation error

• Question 88:

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

  #include

  using namespace std;

  int mul (int a, int b=2)

  {

  int r;

  r=a*b;

  return (r);

  }

  int main ()

  {

  cout << mul(1) << mul(2,4);

  return 0;

  }

  A. It prints: 2
  B. It prints: 28
  C. It prints: 8
  D. It prints: 6
  B. It prints: 28

• Question 89:

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

  #include

  using namespace std;

  int main()

  {

  int x,y=10;

  float f;

  f = 5.90;

  cout << f << ", ";

  x=f;

  cout << x <<", ";

  f=y;

  cout << f;

  return 0;

  }

  A. It prints: 5, 5, 10.00
  B. It prints: 5.9, 5, 10
  C. It prints: 6, 5, 10
  D. It prints: 6, 5, 10.00
  B. It prints: 5.9, 5, 10

• Question 90:

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

  

  A. It prints: 13
  B. It prints: l
  C. It prints: 12
  D. It prints: 2
  D. It prints: 2