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

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

• Question 1:

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

  #include

  #include

  #include

  using namespace std;

  template

  void print(T start, T end) {

  while (start != end) {

  std::cout << *start << " "; start++;

  }

  }

  int main()

  {

  int t1[] ={ 1, 7, 8, 4, 5 };

  list l1(t1, t1 + 5);

  int t2[] ={ 3, 2, 6, 9, 0 };

  deque d1(t2, t2 + 5);

  l1.sort();

  d1.sort();

  l1.merge(d1);

  print(l1.begin(), l1.end());

  print(d1.begin(), d2.end()); cout<

  return 0;

  }

  A. program outputs: 0 1 2 3 4 5 6 7 8 9 0 2 3 6 9
  B. program outputs: 0 1 2 3 4 5 6 7 8 9
  C. program outputs: 9 8 7 6 5 4 3 2 1 0
  D. compilation error
  D. compilation error

• Question 2:

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

  #include

  #include

  #include

  #include

  #include

  using namespace std;

  struct display {

  void operator() (int i) {cout << " " << i;}

  };

  int main() {

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

  vector v1(t, t + 10);

  deque d1(t, t + 10);

  set s1(t, t + 10);

  for_each(v1.begin(), v1.end(), display); //Line I

  for_each(d1.begin(), d1.end(), *(new display())); // Line II

  for_each(s1.begin(), s1.end(), display()); // Line III

  return 0;

  }

  A. program outputs: 10 5 9 6 2 4 7 8 3 1 10 5 9 6 2 4 7 8 3 1 1 2 3 4 5 6 7 8 9 10
  B. program outputs: 10 5 9 6 2 4 7 8 3 1 10 5 9 6 2 4 7 8 3 1 10 5 9 6 2 4 7 8 3 1
  C. compilation error in line I
  D. compilation error in line II
  E. compilation error in line III
  C. compilation error in line I

• Question 3:

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

  #include

  #include

  #include

  using namespace std;

  int main () {

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

  vector v (t,t+10);

  vector::iterator it;

  int m1[] = {1, 3, 2};

  it = find_first_of (v.begin(), v.end(), m1, m1+3);

  cout << "First found at position: " << it?v.begin() << endl;

  return 0;

  }

  A. program outputs: First found at position: 5
  B. program outputs: First found at position: 0
  C. program outputs: First found at position: 6
  D. program outputs: First found at position: 1
  E. program outputs: First found at position: 10
  B. program outputs: First found at position: 0

• Question 4:

  What happens when you attempt to compile and run the following code? Choose all possible answers.

  #include

  using namespace std;

  class C {

  public:

  int _c;

  C():_c(0){}

  C(int c) { _c = c;}

  C operator+=(C and b) {

  C tmp; tmp._c = _c+b._c;

  return tmp;

  } };

  ostream and operator<<(ostream and c, const C and v) {

  c<

  template

  class A {

  T_v;

  public:

  A() {}

  A(T v): _v(v){}

  T getV() { return _v; }

  void add(T and a) { _v+=a; }

  };

  int main()

  {

  A b(2);

  Aa (5);

  a.add(C());

  cout << a.getV() <

  return 0;

  }

  A. program will display:5
  B. program will not compile
  C. program will compile
  D. program will cause runtime exception
  A. program will display:5
  C. program will compile

• Question 5:

  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){} B(){}

  int getV() 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() {

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

  deque d1(t, t+10);

  deque::iterator it = lower_bound(d1.begin(), d1.end(), 4);

  for_each(it, d1.end(), Out(cout));cout<

  return 0;

  }

  Program outputs:

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

• Question 6:

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

  #include

  #include

  #include

  using namespace std;

  int main () {

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

  vector v (t,t+15);

  int number = count(v.begin(), v.end(), 2);

  cout<< number<

  return 0;

  }

  Program outputs:

  A. 4
  B. 3
  C. 2
  E. compilation error
  A. 4

• Question 7:

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

  #include

  #include

  #include

  using namespace std;

  template void print(T start, T end) {

  while (start != end) {

  std::cout << *start << " "; start++;

  }

  }

  int main(){

  vectorv;

  multiset s;

  for(int i=10; i>0; i??) {

  v.push_back(i); s.push_back(i);

  }

  print(v.begin(), v.end()); print(s.begin(), s.end());cout<

  return 0;

  }

  A. program outputs: 10 9 8 7 6 5 4 3 2 1 1 2 3 4 5 6 7 8 9 10
  B. program outputs: 10 9 8 7 6 5 4 3 2 1 10 9 8 7 6 5 4 3 2 1
  C. program outputs: 10 9 8 7 6 5 4 3 2 1 and unpredictable sequence of numbers range 1 to 10
  D. compilation error
  D. compilation error

• Question 8:

  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 start++; } };

  int main() {

  vector v1(10);

  vector v2(10);

  generate(v1.begin(), v1.end(), Sequence(1));

  random(v1.begin(),v1.end());

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

  return 0;

  }

  Program outputs:

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

• Question 9:

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

  #include

  #include

  #include

  using namespace std;

  template void print(T start, T end) {

  while (start != end) {

  std::cout << *start << " "; start++;

  }

  }

  int main() {

  string t1[] ={ "1", "2", "3", "4", "5", "6", "7", "8", "9", "10"};

  list l1(t1, t1 + 10);

  list l2(l1);

  l2.reverse(); l1.splice(l1.end(),l2);

  l1.unique();

  print(l1.begin(), l1.end()); cout<

  return 0;

  }

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

• Question 10:

  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;}

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

  vector v1(t, t+10);

  transform(v1.begin(), v1.end(), v1.begin(), bind2nd(plus(), 1));

  for_each(v1.rbegin(), v1.rend(), Out(cout));cout<

  }

  Program outputs:

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