C++ Institute CPP-22-02 Online Practice Questions and Exam Preparation

C++ Institute CPP-22-02 Online Questions & Answers

• Question 141:

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

  #include

  #include

  #include

  using namespace std;

  int main ()

  {

  listl1;

  dequed1;

  for(int i=0; i<5; i++)

  {

  l1.push_back(i);l1.push_front(i);

  d1.push_back(i);d1.push_front(i);

  }

  for(int i=0; i

  {

  cout<

  }

  cout<

  return 0;

  }

  A. program displays 4 4 3 3 2 2 1 1 0 0 0 0 1 1 2 2 3 3 4 4
  B. runtime exception
  C. compilation error due to line 11
  D. compilation error due to line 12
  E. compilation error due to line 16
  E. compilation error due to line 16

• Question 142:

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

  #include

  #include

  #include

  #include

  using namespace std;

  class B { int val;

  public:

  B(int v=0):val(v){}

  int getV() const {return val;}

  B operator +(const B andb )const { return B(val + b.val);} };

  ostream and operator <<(ostream and out, const B and v) { out<

  templatestruct Out {

  ostream and out;

  Out(ostream and o): out(o){}

  void operator() (const T and val ) { out<

  template struct Add : public binary_function {

  A operator() (const A and a, const A and b) const { return a+b; }};

  int main() {

  int t[]={1,2,3,4,5,6,7,8,9,10};

  vector v1(t, t+10);

  vector v2(10);

  transform(v1.begin(), v1.end(), v2.begin(), bind1st(ptr_fun (Add()), 1));

  for_each(v2.rbegin(), v2.rend(), Out(cout));cout<

  return 0;

  }

  Program outputs:

  A. 1 2 3 4 5 6 7 8 9 10
  B. 2 3 4 5 6 7 8 9 10 11
  C. 10 9 8 7 6 5 4 3 2 1
  D. 11 10 9 8 7 6 5 4 3 2
  E. compilation error
  E. compilation error

• Question 143:

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

  #include

  #include

  #include

  using namespace std;

  class B { int val;

  public:

  B(int v):val(v){}

  int getV() const {return val;} bool operator > (const B and v) const { return val>v.val;} };

  ostream and operator <<(ostream and out, const B and v) { out<struct Out {

  ostream and out;

  Out(ostream and o): out(o){}

  void operator() (const T and val ) { out<

  int main() {

  B t[]={3,2,4,1,5,10,9,7,8,6};

  vector v1(t,t+10);

  sort(v1.begin(), v1.end(), greater());

  cout<<*min_element(v1.begin(), v1.end());

  return 0;

  }

  Program outputs:

  A. 3
  B. 1
  C. 6
  D. 10
  E. compilation error
  E. compilation error

• Question 144:

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

  #include

  #include

  #include

  using namespace std;

  int main(){

  int myints[] ={ 3, 4, 2, 1, 6, 5, 7, 9, 8, 0 };

  sets(myints, myints+10);

  multiset s1(s.begin(),s.end());

  s1.insert(s.begin(),s.end());

  s1.erase(s1.lower_bound(2),s1.upper_bound(7));

  for(multiset::iterator i=s1.begin();i!= s1.end(); i++) {

  cout<<*i<<" ";

  }

  return 0;

  }

  The output will be:

  A. 0 0 1 1 8 8 9 9
  B. 0 1 8 9
  C. 2 3 4 5 6 7
  D. 3 4 9 8 0
  E. 3 3 4 4 9 9 8 8 0 0
  A. 0 0 1 1 8 8 9 9

• Question 145:

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

  #include

  #include

  #include

  using namespace std;

  void myfunction(int i) {

  cout << " " << i;

  }

  void multiply (int a) {

  a*2;

  }

  int main() {

  int t[] = { 10, 5, 9, 6, 2, 4, 7, 8, 3, 1 };

  vector v1(t, t+10);

  for_each(v1.begin(), v1.end(), multiply);

  iter_swap(v1.begin(),t+9);

  for_each(v1.begin(), v1.end(), myfunction);

  return 0;

  }

  Program outputs:

  A. 1 5 9 6 2 4 7 8 3 1
  B. compilation error
  C. 1 2 3 4 5 6 7 8 9 10
  D. 10 9 8 7 6 5 4 3 2 1
  E. 10 5 9 6 2 4 7 8 3 1
  A. 1 5 9 6 2 4 7 8 3 1

• Question 146:

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

  #include

  #include

  #include

  using namespace std;

  class B { int val;

  public:

  B(int v):val(v){}

  int getV() const {return val;} bool operator < (const B and v) const { return val

  ostream and operator <<(ostream and out, const B and v) { out<

  templatestruct Out {

  ostream and out;

  Out(ostream and o): out(o){}

  void operator() (const T and val ) { out<

  int main() {

  B t1[]={3,2,4,1,5};

  B t2[]={6,10,8,7,9};

  vector v1(10);

  sort(t1, t1+5);

  sort(t2, t2+5);

  merge(t1,t1+5,t2,t2+5,v1.begin());

  for_each(v1.begin(), v1.end(), Out(cout));cout<

  return 0;

  }

  Program outputs:

  A. 1 2 3 4 5 6 10 8 7 9
  B. 3 2 4 1 5 6 7 8 9 10
  C. 3 2 4 1 5 6 10 8 7 9
  D. 1 2 3 4 5 6 7 8 9 10
  E. compilation error
  E. compilation error

• Question 147:

  What will happen when you attempt to compile and run the code below, assuming that you enter the following sequence: 64 100?

  #include

  #include

  #include

  #include

  using namespace std;

  int main ()

  {

  string s;

  getline(cin, s);

  stringstream input(s);

  stringstream output;

  for( ; !input.fail() ; )

  {

  int i;

  input>>hex>>i;

  output<

  }

  cout<

  return 0;

  }

  What will be the result assuming that user will enter following sequence: 64 100:

  A. 64 100
  B. 100 256
  C. 100 256 256
  D. 0x64 0x100
  E. 0x100 0x256 0x256
  C. 100 256 256

• Question 148:

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

  #include

  using namespace std;

  int main()

  {

  cout<

  return 0;

  }

  Program outputs:

  A. true false
  B. 1 0
  C. 1 false
  D. true 0
  E. compilation error
  C. 1 false

• Question 149:

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

  #include

  #include

  #include

  #include

  using namespace std;

  templatestruct Out {

  ostream and out;

  Out(ostream and o): out(o){}

  void operator() (const T and val ) { out<

  struct Sequence {

  int start;

  Sequence(int start):start(start){}

  int operator()() { return start++; } };

  int main() {

  vector v1(10);

  generate_n(v1.begin(), 10, Sequence(1));

  random_shuffle(v1.rbegin(), v1.rend());

  sort(v1.begin(), v1.end(), great());

  for_each(v1.begin(), v1.end(), Out(cout));cout<

  return 0;

  }

  Program outputs:

  A. 8 10 5 1 4 6 2 7 9 3
  B. 1 2 3 4 5 6 7 8 9 10
  C. compilation error
  D. 10 9 8 7 6 5 4 3 2 1
  C. compilation error

• Question 150:

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

  #include

  #include

  #include

  using namespace std;

  void myfunction(int i) {

  cout << " " << i;

  }

  int main() {

  int t[] = { 10, 5, 9, 6, 2, 4, 7, 8, 3, 1 };

  vector v1(t, t + 10);

  copy(t, t+10, v1.end());

  for_each(v1.begin(), v1.end(), myfunction);

  return 0;

  }

  Program outputs:

  A. 10 5 9 6 2 4 7 8 3 1
  B. 10 5 9 6 2 4 7 8 3 1 10 5 9 6 2 4 7 8 3 1
  C. compilation error
  D. runtime exception/segmentation fault
  D. runtime exception/segmentation fault