Questions and answers for exam Preparation

MCQs

Total Questions : 10

Question 1.

What is other name of full specialization?

explicit specialization
implicit specialization
function overloading template
None of the mentioned

Discuss Question

Answer: Option A. -> explicit specialization

None

Question 2.

How many types of specialization are there in c++?

Discuss Question

Answer: Option B. -> 2

There are two types specialization. They are full specialization and partial specialization.

Question 3.

What is the output of this program?

1.
#include
2.
using namespace std;
3.
template class A
4.
{
5.
public:
6.
A();
7.
int value;
8.
};
9.
template class A
10.
{
11.
public: A();
12.
};
13.
template class A
14.
{
15.
public: A();
16.
};
17.
template A::A() : value(i)
18.
{
19.
cout

6
10
6default10
None of the mentioned

Discuss Question

Answer: Option C. -> 6default10

In this program, We are defining three templates and specializing it and passing the values to

it and printing it.
Output:
$ g++ spec5.cpp
$ a.out
6default10

Question 4.

What is the output of this program?

1.
#include
2.
#include
3.
#include
4.
using namespace std;
5.
template
6.
type MyMax(const type Var1, const type Var2)
7.
{
8.
cout

template
class
no specialization
None of the mentioned

Discuss Question

Answer: Option A. -> template

In this program, We are computing the result in the specalized block of the program.
Output:
$ g++ spec3.cpp
$ a.out
template

Question 5.

What is the output of this program?

1.
#include
2.
using namespace std;
3.
template
4.
class XYZ
5.
{
6.
public:
7.
void putPri();
8.
static T ipub;
9.
private:
10.
static T ipri;
11.
};
12.
template
13.
void XYZ::putPri()
14.
{
15.
cout

template
class
no specialization
None of the mentioned

Discuss Question

Answer: Option A. -> template

Answer:d
Explanation:In this program, We are passing the value of specified type and printing it by specialization.
Output:
$ g++ spec2.cpp
$ a.out
1
1
1.2

Question 6.

What is the output of this program?

1.
#include
2.
using namespace std;
3.
template
4.
T multIt(T x)
5.
{
6.
for(int ii = 0; ii < count; ii++)
7.
{
8.
x = x * x;
9.
}
10.
return x;
11.
};
12.
int main()
13.
{
14.
float xx = 2.1;
15.
cout

2.1
378.228
2.1: 378.228
None of the mentioned

Discuss Question

Answer: Option C. -> 2.1: 378.228

In this program, We specifed the type in the template function. We need to compile this program by adding -std=c++0x.
Output:
$ g++ -std=c++0x spec1.cpp
$ a.out
2.1: 378.228

Question 7.

Which is similar to template specialization?

template
function overloading
function template overloading
None of the mentioned

Discuss Question

Answer: Option C. -> function template overloading

None

Question 8.

Which is called on allocating the memory for array of objects?

destructor
constructor
method
None of the mentioned

Discuss Question

Answer: Option B. -> constructor

When you allocate memory for an array of objects, the default constructor must be called to

construct each object. If no default constructor exists, youâ€™re stuck needing a list of pointers

to objects.

Question 9.

What is meant by template specialization?

It will have certain data types to be fixed.
It will make certain data types to be dynamic.
Certain data types are invalid
None of the mentioned

Discuss Question

Answer: Option A. -> It will have certain data types to be fixed.

In the template specialization, it will make the template to be specific for some data types.

Question 10.

What is the output of this program?

1.
#include
2.
using namespace std;
3.
template
4.
inline T square(T x)
5.
{
6.
T result;
7.
result = x * x;
8.
return result;
9.
};
10.
template
11.
string square(string ss)
12.
{
13.
return (ss+ss);
14.
};
15.
int main()
16.
{
17.
int i = 2, ii;
18.
string ww("A");
19.
ii = square(i);
20.
cout

2:4AA
2:4
AA
2:4A

Discuss Question

Answer: Option A. -> 2:4AA

Template specialization is used when a different and specific implementation is to be used for a

specific data type. In this program, We are using integer and character.
Output:
$ g++ spec.cpp
$ a.out
2:4AA