Use C language to silve this qusetion

C$18$

A

keypad security control is used for opening $/$ closing a door. The pass code is :in ASCII. Write a c $18$ program to $4785$

$.$Get a $4-$digit code using port A$.1$

Check the code and opens the door. $2$ if the entered code is correct

The system allows the user three. $3.$trials after which an alarm system is activated