Consider the following code segment that utilizes the watchdog timer in the interval mode with a period set in line $4$ of the code.

$1.$ #include

$2.$ void main$($void$)\{$

$3.$int p $=0$;

$4.$WDTCTL $=$ WDT$\_$MDLY$\_8$; $//$ check the meaning of this constant in the include file

$5.$P$2$DIR $|=$ BIT$2$; $//$ Set P$2\mathrm{.}2$ to output direction

$6.$P$2$OUT &$=$ ~BIT$2$; $//$

$7.$for $($;;$)\{$

$8.$if $(($IFG$1$ & WDTIFG$)==1)\{$

$9.$p$++$;

$10.$IFG$1$ &$=$ ~WDTIFG;

$11.$if $($p $==10)$ P$2$OUT $^=$ BIT$2$;

$12.$if $($p $==14)\{$ P$2$OUT $^=$ BIT$2$; p$=0$;$\}$

$13.\}$

$14.\}$

$15.\}$

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A$.(5$ points$)$ Describe this code segment detailing the functionality of the watchdog timer and any outputs that it may effect. What does the code in line $8$ do$?$

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