[TUHS] v7 K&R C

[ron at ronnatalie.com]

EOF is defined to be -1.

getchar() returns int, but c is a unsigned char, the value of (c = getchar()) will be 255.    This will never compare equal to -1.

 

 

 

Ron, 

 

Hmmm... getchar/getc are defined as returning int in the man page and C is traditionally defined as an int in this code..

 

On Fri, May 15, 2020 at 4:02 PM <ron at ronnatalie.com <mailto:ron at ronnatalie.com> > wrote:

Unfortunately, if c is char on a machine with unsigned chars, or it’s of type unsigned char, the EOF will never be detected.

 

 

 

*	while ((c = getchar()) != EOF) if (c == '\n') { /* entire record is now there */

 

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