Question $3[6$ marks$]$

In C arrays can be accessed using pointers. As an exercise, write a function that reverses the polarity of

every element in a $2D$ int array $($i$.$e$.,-1$ becomes $1,46$ becomes $-46,...$etc.$)$ using only pointers. That is$,$

your code must not use any $[],$ which is the non$-$pointer version of array access. Use this function header:

void reversePolarity$($unsigned int row, unsigned int col, int$**$ array$)$

For example, suppose we have a $2-$by$-3$ array my$2$DIntArray with the content $[[0,1,-2],[-999,2345,678]].$

Then the function will be called as $($the array needs to be created differently, see the test file$)$:

reversePolarity$(2,3,$ my$2$DIntArray$)$

And when the function returns, the content of my$2$DIntArray becomes $[[0,-1,2],[999,-2345,-678].$

You can assume that the row & col parameters always correctly indicate the number of rows & columns

of the array. Do not use $[]$ anywhere in your answer $($if you do you get $0$ for this question$).$

Only include the a$1\_$question $3.$h header file and the function definition $($and your helper functions, if any$)$

in the source file and name it as a$1\_$question$3.$c$.$

$**$ please use comments in the code to highlight the important parts! :$3$