Top | MCQs on Array Data Strcuture with Answers | Question 17

Consider the below program, and what is doing this program basically?

C++

#include <bits/stdc++.h>
using namespace std;

void print(char a[], int n, int ind)
{
    for (int i = ind; i < n + ind; i++)
        cout << a[(i % n)] << " ";
}

int main()
{
    char a[] = { 'A', 'B', 'C', 'D', 'E', 'F' };
    int n = sizeof(a) / sizeof(a[0]);
    print(a, n, 3);
    return 0;
}

(A)

It is printing the normal array

(B)

It is printing circular array rotated by 3

(C)

Syntax error

(D)

None

Answer: (B)
Explanation:

In the above program, we are just shifting the array elements by 3 circularly.

we are running loop from i = 3 to 9.

• Inside the loop we are printing arr[3%6] = arr[3] = ‘D’
• arr[4 % 6] = arr[4]  = ‘E’
• arr[5 % 6] = arr[5] = ‘F’
• arr[6 % 6] = arr[0] = ‘A’
• arr[7 % 6] = arr[1] = ‘B’
• arr[8 % 6] = arr[2] = ‘C’

Hence Option (B) is correct.

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