C++ Programming Questions and Answers – seq_con Array Class – 1

This set of C++ Programming Multiple Choice Questions & Answers (MCQs) focuses on “seq_con Array Class – 1”.

1. What is sequence container arrays?
a) C-like arrays
b) Template class sequence container, alternative for C-like arrays
c) Collection of data of the same type
d) Collection of objects
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2. Pick the correct statement.
a) Sequence Container arrays know (somehow stores within) its size whereas C-like arrays do not
b) Sequence Container arrays have no advantage over C-like arrays
c) Sequence Container arrays are same as C-like arrays
d) Sequence Container arrays are also present in C
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3. Which of the following is/are advantage(s) of Sequence Container arrays over C-like arrays?
a) Sequence Container arrays store its size within itself whereas C-like arrays do not
b) Sequence Container arrays are more efficient
c) Sequence Container arrays have no array decay problem whereas C-like arrays do have
d) All of the mentioned
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4. Which of the follwoing function(s) of Array classes are similar to [] operator?
a) at()
b) get()
c) both at() and get()
d) front()
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5. How many different ways are there to access an element of array classes at the ith position?
a) 1
b) 2
c) 3
d) 4
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6. What header file is included to use array classes?
a) <array>
b) <Array>
c) <algorithm>
d) <ARRAY>
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7. What is the correct syntax of declaring an array class?
a) array<type> arr;
b) array<type,size> arr;
c) Array<type> arr;
d) Array<type,size> arr;
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8. What will be the output of the following C++ code?

#include <iostream>
#include <array>
using namespace std;
int main(int argc, char const *argv[])
{
	array<int,5> arr = {1,2,3,4,5};
	cout<<"Printing Using [] operator: ";
	for(int i=0;i<5;i++){
		cout<<arr[i]<<" ";
	}
	cout<<endl;
	cout<<"Printing Using at() function: ";
	for(int i=0;i<5;i++){
		cout<<arr.at(i)<<" ";
	}
	cout<<endl;
	return 0;
}

a)

1 2 3 4 5
1 2 3 4 5

b)

Printing Using [] operator: 1 2 3 4 5 
Printing Using at() function: 1 2 3 4 5

c)

Printing Using at() function: 1 2 3 4 5
Printing Using [] operator: 1 2 3 4 5 

d) Printing Using at() function: 1 2 3 4 5
View Answer

$ ./a.out 
Printing Using [] operator: 1 2 3 4 5 
Printing Using at() function: 1 2 3 4 5

9. What is the syntax of printing the first element of an array Arr using get() function?
a) Arr.get(0)
b) get<0>(Arr)
c) Arr.get[0]
d) get<0>[Arr]
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10. Which header file is required to use get() function?
a) <array>
b) <tuple>
c) <Array>
d) <access>
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11. What is the difference between get() and at()?
a) at() is available under <array> header file whereas get() is available under <tuple> header file
b) at() is a member function of array class whereas get() is not
c) get() takes array class as a parameter whereas at() takes a constant integer(i.e. index) as a parameter
d) all of the mentioned
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12. Which function is used to access the first element of an array class?
a) front()
b) start()
c) back()
d) first()
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13. Which function is used to access the last element of an array class?
a) end()
b) start()
c) back()
d) last()
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14. Which of the following function(s) is/are used to get the size of the array class?
a) size()
b) max_size()
c) both size() and max_size()
d) get_size()
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15. What will be the output of the following C++ code?

#include <iostream>
#include <array>
using namespace std;
int main(int argc, char const *argv[])
{
	array<int,10> arr = {1,2,3,4,5};
	cout<<"size:"<<arr.size()<<endl;
	cout<<"maxsize:"<<arr.max_size()<<endl;
	return 0;
}

a)

size:10
maxsize:10

b)

size:5
maxsize:10

c)

size:5
maxsize:5

d)

size:10
maxsize:5

$ ./a.out 
size:10
maxsize:10

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