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

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

• Question 121:

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

  

  A. It prints: T
  B. It prints an empty line
  C. It prints: Tesc
  D. It prints: st
  C. It prints: Tesc

• Question 122:

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

  #include

  using namespace std;

  class A {

  public:

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

  };

  class C:public A {

  public:

  virtual void Print()=0;

  };

  int main()

  {

  C obj3;

  obj3?>Print();

  }

  A. It prints: BB
  B. It prints: A
  C. It prints: AB
  D. Compilation error
  D. Compilation error

• Question 123:

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

  #include

  using namespace std;

  int main()

  {

  int i = 0;

  i++;

  goto lab;

  i++;

  lab:

  cout<

  return 0;

  }

  A. It prints: 0
  B. It prints: 34
  C. It prints: 1
  D. It prints: 3
  C. It prints: 1

• Question 124:

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

  #include

  using namespace std;

  class complex{

  double re;

  double im;

  public:

  complex(double x) { re=x,im=x;};

  complex(double x,double y) { re=x,im=y;}

  void print() { cout << re << " " << im;}

  };

  int main(){

  complex c1;

  c1 = 3.0;

  c1.print();

  return 0;

  }

  A. It prints: 0 0
  B. It prints: 1 1
  C. It prints: 3 3
  D. Compilation error
  C. It prints: 3 3

• Question 125:

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

  

  A. It prints: 5.2110.0
  B. It prints: 5.210.0
  C. It prints: 52.10
  D. It prints: 5210
  C. It prints: 52.10

• Question 126:

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

  #include

  #include

  using namespace std;

  class SampleClass

  {

  string *s;

  public:

  SampleClass() { s = new string("Text");}

  SampleClass(string s) { this?>s = new string(s);}

  ~SampleClass() { delete s;}

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

  };

  int main()

  {

  SampleClass *obj;

  obj = new SampleClass("Test");

  obj?>Print();

  }

  A. It prints: Text
  B. It prints: Test
  C. It prints: TextTest
  D. Garbage value.
  B. It prints: Test

• Question 127:

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

  #include

  using namespace std;

  int main()

  {

  float x=3.5,y=1.6;

  int i,j=2;

  i = x + j + y;

  cout << i;

  return 0;

  }

  A. It prints: 7
  B. It prints: 6
  C. It prints: 7,1
  D. Compilation error
  A. It prints: 7

• Question 128:

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

  #include

  #include

  using namespace std;

  int main()

  {

  string s1[]= {"How" , "to" };

  s1[0].swap(s1[1]);

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

  cout << s1[i];

  }

  return( 0 );

  }

  A. It prints: Hoto
  B. It prints: toHow
  C. It prints: Ht
  D. It prints: to
  B. It prints: toHow

• Question 129:

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

  #include

  using namespace std;

  class A

  {

  public:

  virtual void Print(){ cout<<"A";}

  };

  class B:public A

  {

  public:

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

  };

  int main()

  {

  A *obj;

  A ob1;

  obj = andob1;

  obj?>Print();

  B ob2;

  obj = andob2;

  obj?>Print();

  }

  A. It prints: AB
  B. It prints: AA
  C. It prints: BA
  D. It prints: BB
  A. It prints: AB

• Question 130:

  What is the output of the program?

  #include

  using namespace std;

  #define PRINT(i) cout<

  int main()

  {

  int y=2, z=3;

  PRINT(y);

  PRINT(z);

  return 0;

  }

  A. It prints: 123
  B. It prints: 23
  C. It prints: 3
  D. It prints: 2
  B. It prints: 23