Top | MCQs on Array Data Strcuture with Answers | Question 14

Let A be a matrix of size n x n. Consider the following program. What is the expected output? 

C++

void fun(int A[][N])
{
    for (int i = 0; i < N; i++)
        for (int j = i + 1; j < N; j++)
            swap(A[i][j], A[j][i]);
}

(A)

Matrix A

(B)

Diagonal Of matrix A

(C)

Transpose of matrix A

(D)

None

Answer: (C)
Explanation:

In the above program, we are just swapping(arr[i][j]) to arr[j][i]). That means row will become column and column will become row.
That means the Transpose of the graph.

Hence (C) is the correct output.

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