Q37620: EOH Is Not a Defined Constant for getch or getche

Article: Q37620
Product(s): See article
Version(s): 5.00 5.10 | 5.10
Operating System(s): MS-DOS | OS/2
Keyword(s): ENDUSER | | mspl13_c
Last Modified: 14-NOV-1988

The "Microsoft C 5.10 Optimizing Compiler Run-Time Library Reference"
manual for the functions getch and getche states that when reading a
function or cursor key, the first call to either function will return
0 or EOH. This is misleading; EOH appears to be a constant that is
defined in an include file, though it is not. These functions actually
return 0 or 0xE0. The 0x convention is followed throughout the manual
for hexadecimal numbers, except in this case.

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