ReadHex4Test

Notes: A screenshot of a terminal window showing the output of a function for testing the ReadHex4 subroutine of the HexDump program. The window has a series of repeated hex digits with a blinking cursor at the end of the line. The first digit can be a lowercase or uppercase letter but the second digit is always uppercase. The program uses the RedHex4 to read digits entered with the keyboard and then uses PrintHex4 to repeat them back. There are no non-hex digits as those get ignored by the program.