LC3 assembly help:

On the LC-3 simulator, you can only input one character with the getc trap subroutine. However, it does print a multi-character string. In this lab, you will write a program that will accept a multi-character string and display it. We would like to input a multi-digit number, convert it to an integer and display it. The range of numbers you can process on the LC-3 is [-32768: +32767]. Write a program in LC-3 assembly to input and display a multidigit number in the valid range for this machine