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

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

• Question 21:

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

  #include

  #include

  #include

  using namespace std;

  int main(){

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

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

  map m;

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

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

  }

  if (m[11] == "eleven") {

  cout<<"eleven ";

  }

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

  cout<second<<" ";

  }

  cout<

  return 0;

  }

  A. program outputs: one two three four five six seven eight nine ten 11
  B. program outputs: one two three four five six seven eight nine ten 10
  C. program outputs: one two three four five six seven eight nine ten 10
  D. program outputs: eleven one two three four five six seven eight nine ten 10
  E. runtime exception
  A. program outputs: one two three four five six seven eight nine ten 11

• Question 22:

  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, 2, 3};

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

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

  return 0;

  }

  Program outputs:

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

• Question 23:

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

  #include

  using namespace std;

  class C {};

  template

  class A {

  T_v;

  public:

  A() {}

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

  T getV() { return _v; }

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

  };

  int main()

  {

  A b;

  Aa;

  a.add(C());

  cout << b.getV() <

  return 0;

  }

  A. program will display:0
  B. program will not compile
  C. program will compile
  D. program will cause runtime exception
  B. program will not compile

• Question 24:

  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.insert(pair(t[i], s[i]));

  }

  if (m.count(3) == 2) {

  m.erase(3);

  }

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

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

  }

  return 0;

  }

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

• Question 25:

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

  #include

  #include

  int main ()

  {

  std::vectorv1;

  for(int i = 0; i<10; i++) {v1.push_back(i); }

  v1.resize(4);

  std::vector::iterator it = v1.end();

  v1.insert(v1.end()?1, 4);

  for(int i=0 ; i<= v1.size(); i++) {std::cout<

  return 0;

  }

  A. compilation error
  B. program outputs 0 1 2 3 4
  C. program outputs 0 2 4 8 6 and exception
  D. program outputs 0 2 4 6 8
  E. program outputs 0 2 4 8 6
  C. program outputs 0 2 4 8 6 and exception

• Question 26:

  What will happen when you attempt to compile and run the code below, assuming that you enter the following sequence: 1 2 3?

  #include

  #include

  #include

  using namespace std;

  int main ()

  {

  string s;

  getline(cin, s);

  stringstream input(s);

  stringstream output;

  for( ; !input.fail() ; )

  {

  int i;

  input>>i;

  output<

  }

  cout<

  return 0;

  }

  Program will output:

  A. 1 2 3
  B. 1 2 3 3
  C. 0x1 0x2 0x3
  D. 0x1 0x2 0x3 0x3
  E. program runs forever without output
  B. 1 2 3 3

• Question 27:

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

  #include

  #include

  #include

  #include

  using namespace std;

  int main()

  {

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

  deque mydeck(t, t+10);list mylist(t,t+10);

  queue first;

  queue second(mydeck);

  queue third(second);

  queue > fourth(mylist);

  mylist.clear();third.clear();

  cout<

  cout<

  return 0;

  }

  A. program outputs: 10 0 10 0
  B. program outputs: 0 0 0 0
  C. program outputs: 10 10 10 10
  D. program outputs: 10 0 0 10
  E. compilation error
  E. compilation error

• Question 28:

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

  #include

  #include

  using namespace std;

  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()

  {

  Aa("Hello");

  string s(" world!");

  a.add(s);

  cout << a.getV() <

  return 0;

  }

  A. program will display: Hello world!
  B. program will not compile
  C. program will display: Hello
  D. program will run without any output
  A. program will display: Hello world!

• Question 29:

  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() {

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

  deque d1(t, t+10);

  vector v1(d1.rbegin(), d1.rend());

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

  swap_ranges(v1.begin(), v1.end(), d1.begin());

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

  for_each(d1.begin(), d1.end(), myfunction);

  return 0;

  }

  Program outputs:

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

• Question 30:

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

  #include

  #include

  #include

  using namespace std;

  int main () {

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

  vector v (t,t+10);

  vector::iterator it = v.begin();

  while ( (it = adjacent_find (it, v.end())) != v.end()) {

  cout<

  }

  cout<< endl;

  return 0;

  }

  A. program outputs: 2 3
  B. program outputs: 2 7
  C. program outputs: 3 8
  D. compilation error
  E. program will run forever
  B. program outputs: 2 7