Questions and answers for exam Preparation

MCQs

Total Questions : 10

Question 1.

Which are the parameters for the content of the buffer?

start
finish
Both a & b
None of the mentioned

Discuss Question

Answer: Option C. -> Both a & b

The contents of the buffer are initialized using the values from the iterator range supplied to

the constructor by the start and finish parameters.

Question 2.

Which of the following type does the container should define?

Iterator type
Vector type
Storage type
None of the mentioned

Discuss Question

Answer: Option A. -> Iterator type

Every container must define an iterator type. Iterators allow algorithms to iterate over the

container's contents.

Question 3.

How the member functions in the container can be accessed?

Iterator
Indirect
Both a & b
None of the mentioned

Discuss Question

Answer: Option A. -> Iterator

The container manages the storage space for its elements and provides member functions

to access them, either directly or through iterators which reference objects with similar

properties to pointers.

Question 4.

Which is used for manually writing lookup table?

std:map
std:lookup
std:find
None of the mentioned

Discuss Question

Answer: Option A. -> std:map

None.

Question 5.

What is the output of this program?

1.
#include
2.
#include
3.
#include
4.
#include
5.
using namespace std;
6.
template
7.
class SimpleContainer
8.
{
9.
public:
10.
SimpleContainer(size_t xDim, size_t yDim, myType const& defaultValue)
11.
: objectData(xDim * yDim, defaultValue)
12.
, xSize(xDim)
13.
, ySize(yDim)
14.
{
15.
}
16.
myType& operator()(size_t x, size_t y)
17.
{
18.
return objectData[y * xSize + x];
19.
}
20.
myType const& operator()(size_t x, size_t y) const
21.
{
22.
return objectData[y * xSize + x];
23.
}
24.
int getSize()
25.
{
26.
return objectData.size();
27.
}
28.
void inputEntireVector(vector inputVector)
29.
{
30.
objectData.swap(inputVector);
31.
}
32.
void printContainer(ostream& stream)
33.
{
34.
copy(objectData.begin(),
objectData.end(),
35.
ostream_iterator(stream, ""/*No Space*/));
36.
}
37.
private:
38.
vector objectData;
39.
size_t xSize;
40.
size_t ySize;
41.
};
42.
template
43.
inline ostream& operator

2000
No Space
Error
Depends on the compiler

Discuss Question

Answer: Option D. -> Depends on the compiler

In this program, We formed a simple container and got the size of it and printing it.
Output:
$ g++ cont1.cpp
$ a.out
200

Question 6.

Which container provides random access iterators?

vector
deque
sort
Both a & b

Discuss Question

Answer: Option D. -> Both a & b

None.

Question 7.

What is the output of this program?

1.
#include
2.
#include
3.
using namespace std;
4.
class Component
5.
{
6.
public:
7.
virtual void traverse() = 0;
8.
};
9.
class Leaf: public Component
10.
{
11.
int value;
12.
public:
13.
Leaf(int val)
14.
{
15.
value = val;
16.
}
17.
void traverse()
18.
{
19.
cout traverse();
34.
}
35.
};
36.
int main()
37.
{
38.
Composite containers[4];
39.
for (int i = 0; i 40.
for (int j = 0; j 41.
containers[i].add(new Leaf(i *3+j));
42.
for (int k = 1; k 43.
containers[0].add(&(containers[k]));
44.
for (int p = 0; p 45.
{
46.
containers[p].traverse();
47.
}
48.
}