9. Write a Program to swap rows and columns of 4*4 matrix and calculate the sum of the secondary diagonal elements of matrix which is formed after swapping the column. Secondary diagnoal of matrix is formed by the elements A03, A12, A21, A30. Sample I/P: 1234 5678 1357 2468 O/P: Enter row to be exchanged: 2 Enter other row number to be exchanged with : 3 Matrix after swapping the row: 1234 1357 1357 2468 Enter column to be exchanged : 4 Enter other column number to be exchanged with: 2 Matrix after swapping the column 1232 5676 1353 2464 Sum of Secondary diagonal element of matrix: 14

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