Don't use Scanf()
Roland McGrath
rk9005 at cca.ucsf.edu
Fri Mar 11 12:36:59 AEST 1988
One real stupidity I've seen many, many times is the
over-use of printf. The printf functions have their uses,
and they do their job quite well, but please know what these
uses are!!
For example:
printf("Hello world!\n");
Haven't you ever heard of puts????
puts("Hello world!"); /* note the newline is appended */
or
printf("hi");
try fputs:
fputs("hi", stdout); /* no newline appended */
What's that? Oh, now you have to include <stdio.h> so
you can get the proper declarations of all these functions anyway?
Poor baby!
And the ultimate stupidity:
printf("\n");
Get a brain!!!!! You're using the function that can do complex
data formatted output to write one bleeping character!!!!!
Try
putchar('\n');
If you include <stdio.h>, this will probably end up being a macro
that will write it out very fast.
I have even seen:
sprintf(buf, "constant string");
Hey, Mr. Power-Programmer, ever heard of strcpy????
In general, if there's no format spec, don't use printf!!!!!!
--
Roland McGrath
ARPA: roland at rtsg.lbl.gov roland at lbl-rtsg.arpa
UUCP: ...!ucbvax!lbl-rtsg.arpa!roland
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