In C program Enhance the tic$-$tac$-$toe game so $2$ people can play. To do this, you need to add an$$O$$ that, like the $$X$,$ is drawn in the square. Then prompt the user for a square identifier, and alternate between drawing $$X$$s and $$O$$s at those locations on the board. The first move is for $$X$.$ You need to detect and reject when a user plays a square that is already taken. Stop after the board is full $($that is$,9$ plays$).$ You do not have to worry about who wins.

The $$O$$ is to be $5\backslash$times $5,$ centered in the middle of the square.

Here are the messages your program should print to the standard output:

The tic$-$tac$-$toe board, with $$X$$s and $$O$$s as appropriate;

When it is $$X$$s turn, print $$X$$s turn $>($note the space after the $>)$; and

When it is $$O$$s turn, print $$O$$s turn $>($again$,$ note the space after the $>).$

Here are the error messages; all are to be printed on the standard error:

When the user enters only $1$ co$-$ordinate: $$Need $2$ co$-$ordinates

$($the $$

$$ is a newline$)$;

When there is an illegal character in the input: $$Illegal character in input $"\%$c$"$

$($the $\%$c$$ is to print the offending character$)$; and

When the square is already occupied: $\%$c has played $\%$d$,\%$d

$($where $\%$c$$ is either $$X$$ or $$O$,$ whichever is already in the square, and $\%$d$,\%$d$$ are the co$-$ordinates of the occupied square$)$; and

When an invalid set of co$-$ordinates are entered: $\%$d$,\%$d$$ is not a valid square; the numbers must be between $1$ and $3$ inclusive

$($each $\%$d is one of the invalid numbers$).$

If the program reads an end of file at the prompt, print a newline and quit.

The program should exit with an exit status code of $0.$occupied square$)$

In problem $1,$ the dimensions of the $"$O$"$ was added; it is to be $55$ centered in the square.

For all problems, the exit status code is $0.$

$(25$ points$)$ Enhance the tic$-$tac$-$toe game so $2$ people can play. To do this, you need to add an $"$O$"$ that, like the $"x",$ is drawn in the square. Then prompt the user for a square identifier, and alternate between drawing

$"$X$"$s and $"$O$"$s at those locations on the board. The first move is for $"x".$ You need to detect and reject when a user plays a square that is already taken. Stop after the board is full $($that is$,9$ plays$).$ You do not have to

worry about who wins.

The $"$O$"$ is to be $55,$ centered in the middle of the square.

Here are the messages your program should print to the standard output:

The tic$-$tac$-$toe board, with $"x"$s and $"$O$"$s as appropriate;

When it is $"x"\text{'}$s turn, print $"x\text{'}$s turn $>"($note the space after the $">")$; and

When it is $"$O$"\text{'}$s turn, print $"0\text{'}$s turn $>"($again$,$ note the space after the $">").$

Here are the error messages; all are to be printed on the standard error:

When the user enters only $1$ co$-$ordinate: "Need $2$ co$-$ordinates $\frac{?}{?}$

$"($the $\text{'}\text{'}$ is a newline$)$;

When there is an illegal character in the input: "Illegal character in input $"8$c$"n"($the $"\%"$ is to print the offending character$)$; and

When the square is already occupied: $"\%$ has played $\%d,\%\frac{d}{?}$

$"($where $"\%$c$"$ is either $"x"$ or $"$O$",$ whichever is already in the square, and $"\%$d$,\%$d$"$ are the co$-$ordinates of the occupied square$)$; and

When an invalid set of co$-$ordinates are entered: $"\%$d$,\%$d$"$ is not a valid square; the numbers must be between $1$ and $3$ inclusiveln" $($each $\%$d is one of the invalid numbers$).$

If the program reads an end of file at the prompt, print a newline and quit.

The program should exit with an exit status code of $0.$

Please call your program $ttt4$ a$.$c and submit it through Gradescope. A sample executable, used to generate the Gradescope validation outputs, is available on the CSIF at $/$home$/$bishop$/$hw$4/$ttt$4$a$.$ In C program