about kbd

[PCM programmer]

1. Put the incoming characters from the keypad into an array.
Make sure you don't write beyond the end of the array.

2. When the user presses the '#' key, this marks the end of the data.
Write a 0x00 to the end of the data in the array, when you get this key.
This will make the ASCII numbers into a string.

3. Now use the atoi() or atol() function to convert the numeric string
in the array into an integer. Those functions are in this file. You need
to #include it in your program: