Bug in MEGAMAX C ?

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4 total messages Started by b. k. delaney Sat, 22 Mar 1986 17:37

#242

Author: b. k. delaney
Date: Sat, 22 Mar 1986 17:37

20 lines
948 bytes

I was over at a friends house who just got the MEGAMAX "C" 
compiler for his 520ST.  There seems to be a bug with the
printf function. For example:

#include <stdio.h>
main()
{
	int c;

	printf("Hello world\n");
	printf("Enter a Char:");
	c = getchar();
}

Does not Work  until you put a "\n" in the second
printf statement. 

				ihnet!bryan
p.s. We tried calling the program a.tos, but that did not help either

Re: Bug in MEGAMAX C ?

#272

Author: Tim Smith
Date: Tue, 25 Mar 1986 21:16

8 lines
857 bytes

It sounds like stdout is buffered.  Try saying

	fflush( stdout );

before the getchar().
-- 

Tim Smith       sdcrdcf!ism780c!tim || ima!ism780!tim || ihnp4!cithep!tim

Re: Bug in MEGAMAX C ?

#270

Author: Jwahar R. Bammi
Date: Wed, 26 Mar 1986 07:26

32 lines
1457 bytes

> 
> I was over at a friends house who just got the MEGAMAX "C" 
> compiler for his 520ST.  There seems to be a bug with the
> printf function. For example:
> 
> #include <stdio.h>
> main()
> {
> 	int c;
> 
> 	printf("Hello world\n");
> 	printf("Enter a Char:");
> 	c = getchar();
> }
> 
> Does not Work  until you put a "\n" in the second
> printf statement. 
That is not a bug. Printf write to stdout which is a bufferwed stream.
So if you want the prompt to appear before the getchar() you will have
to flush the stream something like

	printf("Enter a Char:");
	fflush(stdout);
	c = getchar();

	I tried it  just now, and it works.
-- 
					Jwahar R. Bammi
			       Usenet:  .....!decvax!cwruecmp!bammi
			        CSnet:  bammi@case
				 Arpa:  bammi%case@csnet-relay
			   CompuServe:  71515,155

Re: Orphaned Response

#320

Author: m5
Date: Mon, 31 Mar 1986 21:15

7 lines
879 bytes

The function getchar() is designed to return characters from line-
edited input from the keyboard, in keeping with the implementation
of standard I/O everywhere else in the world.  If you want characters
as they are typed, use the low level BIOS routines.

Mike McNally			Megamax

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