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

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

• Question 201:

  Which lines of the code below contain proper instantiation of queue objects?

  #include

  #include

  #include

  #include

  #include

  using namespace std;

  int main()

  {

  deque mydeck;

  list mylist;

  vector myvector;

  queue first; // line I

  queue second(mydeck);// line II

  queue third(second);// line III

  queue fourth(mylist);// line IV queue fifth(myvector);// line V return 0; }

  A. line I
  B. line II
  C. line III
  D. line IV
  E. line V
  A. line I
  B. line II
  C. line III

• Question 202:

  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=0):val(v){}

  int getV() const {return val;}

  operator int () const { return val;} };

  templatestruct Out {

  ostream and out;

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

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

  B operator()(B and a, B and b) { 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(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 203:

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

  #include

  #include

  using namespace std;

  int main() {

  int t[] = { 1, 1, 2, 2, 3, 3, 4, 4, 5, 5 };

  string s[] = { "one", "one", "two", "two", "three","three", "four", "four", "five", "five"};

  map m;

  for (int i = 0; i < 10; i++) {

  m.push_back(pair(t[i], s[i]));

  }

  for (map::iterator i = m.begin(); i != m.end(); i++) {

  cout << i?>first << " ";

  }

  return 0;

  }

  A. program outputs: 1 2 3 4 5
  B. compilation error
  C. program outputs: 1 1 2 2 3 3 4 4 5 5
  D. program outputs: one two three four five
  E. program outputs: one one two two three three four four five five
  B. compilation error

• Question 204:

  What will be output of the program when you attempt to compile and run the following code? #include

  #include

  #include

  #include

  using namespace std;

  int main(){

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

  string first[] = {"three", "four", "two", "one", "six","five", "seven", "nine","eight","zero"};

  multimap m;

  for(int i=0; i<10; i++) {

  m.insert(pair(second[i],first[i]));

  }

  m[0]="ten";

  m.insert(pair(1,"eleven"));

  for(multimap::iterator i=m.begin();i!= m.end(); i++) {

  cout<second<<" ";

  }

  return 0;

  }

  A. zero one two three four five six seven eight nine
  B. ten one two three four five six seven eight nine
  C. zero eleven two three four five six seven eight nine
  D. ten eleven two three four five six seven eight nine
  E. compilation error
  E. compilation error

• Question 205:

  Which sentence is correct about the code below?

  #include

  #include

  #include

  using namespace std;

  class A {

  int a;

  public:

  A(int a) : a(a) {}

  int getA() const { return a; }

  void setA(int a) { this?>a = a; }

  /* Insert Code Here */

  };

  struct add10 { void operator()(A and a) { a.setA(a.getA() + 10); } };

  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(), add10());

  vector::iterator it = find(v1.begin(), v1.end(), A(7));

  cout << it?>getA() << endl;

  return 0;

  }

  A. it will compile and print 7
  B. it will not compile
  C. it will compile but the program result is unpredictable
  D. adding code: bool operator !=(const A and b) const { if (this?>a != b.a) { return true; } return false; } at Place 1 will allow the program to compile
  B. it will not compile

• Question 206:

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

  #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 10*(1+(start++ %3));}

  };

  int main() {

  deque d1(10);

  generate(d1.begin(), d1.end(), Sequence(1));

  sort(d1.begin(), d1.end());

  pair::iterator, deque::iterator > result = equal_range(d1.begin(), d1.end(), 20);

  for_each(result.first, result.second, Out(cout));cout<

  return 0;

  }

  Program outputs:

  A. 10 10 10 20 20 20 20 30 30 30
  B. 20 20 20 20
  C. 10 20 20 20 20
  D. 20 20 20 20 30
  E. 10 20 20 20 20 30
  B. 20 20 20 20

• Question 207:

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

  #include

  #include

  #include

  using namespace std;

  templatestruct Out {

  ostream and out;

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

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

  int main() {

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

  int t2[]={5,6,8,2,1};

  vector v1(10);

  sort(t1, t1+5);

  sort(t2, t2+5);

  set_difference(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 8 0 0 0
  B. 3 4 0 0 0 0 0 0 0 0
  C. 6 8 0 0 0 0 0 0 0 0
  D. compilation error
  E. 1 2 5 0 0 0 0 0 0 0
  B. 3 4 0 0 0 0 0 0 0 0

• Question 208:

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

  #include

  #include

  #include

  #include

  using namespace std;

  void myfunction(int i) {

  cout << " " << i;

  }

  int main() {

  vector v1(10,1);

  fill(v1.begin()+2, v1.end()?2,2);

  fill_n(v1.begin()+4,2,3);

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

  return 0;

  }

  Program outputs:

  A. 1 1 2 2 3 3 2 2 1 1
  B. 1 1 2 2 2 2 2 2 1 1
  C. compilation error
  D. none of these
  A. 1 1 2 2 3 3 2 2 1 1

• Question 209:

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

  #include

  #include

  #include

  using namespace std;

  template

  int calculate(T start, T end)

  {

  int s = 0;

  while (start != end)

  s+= *start; start++;return s;

  }

  int main ()

  {

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

  vectorv1(t, t+5);

  dequed1(t+5, t+10);

  cout<

  cout<

  cout<

  cout<

  cout<

  return 0;

  }

  A. compilation error
  B. runtime exception
  C. program outputs 55 5 17 55
  D. program outputs 55 5 17 0
  A. compilation error

• Question 210:

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

  #include

  #include

  #include

  using namespace std;

  templatestruct Out {

  ostream and out;

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

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

  int main() {

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

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

  vector v1(10);

  sort(t1, t1+5); sort(t2, t2+5);

  copy(t1,t1+5,v1.begin());

  copy(t2,t2+5,v1.begin()+5);

  merge(v1.begin(), v1.begin()+5,v1.end());

  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