$4$A Write a C program to read a matrix of size $MxN$ and display. The program must find and

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display the location of all the elements in the matrix which are both the largest element in its column and the smallest element in its row. Replace all such elements with the row average. If no such elements exist, then display appropriate message.

$\backslash$table$[[1,2,3],[4,5,6],[7,8,9]]$

$4$B With appropriate example program code, explain how to retuin multiple values from a

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function using pointers.

$4$C Write a complete C program to read and print a string using pointer.

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$5$A Write a C program to read a $2-$dimensional integer array $($matrix$)$ arr of order $mn$ and display the array. Use a recursive function $r$ SoD$($int$)$to find the sum of digits of an odd element $($value$)$ from the array read above and replace the element with its sum. Using pointers write another function dec$2$Bin $($int $*)$ that takes as a parameter the sum of digits of odd

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elements computed above, replace it with its binary equivalent in the same $2-$dimensional array, and display the array in matrix form in the main program.