Arrays(Engineering > Computer Science And Engineering > C++ Language ) Questions and answers for exam Preparation

Question 1. Which of the following correctly declares an array?

int array[10];
int array;
array{10};
array array[10];

Explanation:-

Answer: Option A. -> int array[10];

Because array variable and values need to be declared after the datatype only.

Question 2. Which of the following gives the memory address of the first element in array?

array[0];
array[1];
array(2);
array;

Explanation:-

Answer: Option D. -> array;

array;

Question 3. Which of the following accesses the seventh element stored in array?

array[6];
array[7];
array(7);
array;

Explanation:-

Answer: Option A. -> array[6];

The array location starts from zero, So it can accessed by array[6].

Question 4. What is the index number of the last element of an array with 9 elements?

9
8
0
Programmer-defined

Explanation:-

Answer: Option B. -> 8

Because the first element always starts at 0. So it is on 8 position.

Question 5. What is a array?

n array is a series of elements of the same type in contiguous memory locations
An array is a series of element
An array is a series of elements of the same type placed in non-contiguous memory locations
None of the mentioned

Explanation:-

Answer: Option A. -> n array is a series of elements of the same type in contiguous memory locations

n array is a series of elements of the same type in contiguous memory locations

Question 6.

What is the output of this program?

#include < stdio.h >

using namespace std;

int main()

{

char str[5] = "ABC";

cout

ABC
ABCD
AB
None of the mentioned

Explanation:-

Answer: Option A. -> ABC

We are just printing the values of first 3 values.

Question 7.

What is the output of this program?

#include < stdio.h >

using namespace std;

int main()

{

int array[] = {10, 20, 30};

cout

-15
-30
compile time error
garbage value

Explanation:-

Answer: Option B. -> -30

It's just printing the negative value of the concern element.