So, how would I modify those two lines of code to allow me to do something like: echo 3 | ./bitshift I've never been able to figure out how to make a C program accept STDIN. Of course, I haven't spent a whole lot of time looking either. Jay > -----Original Message----- > From: Jason DeStefano [mailto:destef at destef.com] > Sent: Tuesday, March 13, 2001 8:25 PM > To: tclug-list at mn-linux.org > Subject: Re: [TCLUG] bit shifting > > > How about 2 lines? > > Reusable code...it makes C just as simple to crank out code as > scripts. It also keeps a good programmer's skills sharp by always > concentrating only on one language--and seperates the men from > the boyz when it comes to writing quility code. But for the > lighthearted > I wouldn't recommend it because power=complexity. > > #include <stdlib.h> > int main(int argc, char ** argv) { return (atoi(argv[1])<<4); > } /* x*16 */ > > Now that wasnt so bad was it? > > cc -s -O3 bitshift.c > > exe size if 3.1K and is much more of an efficient OS call that running > a perl script. But if you prefer scripting then fair enough since for > software developers coding vs. scripting is somewhat of a holy > war. > > I'd like to see perl compilers that can compete with C--then I'd > be impressed. > > > At 07:25 AM 3/12/01 -0600, you wrote: > >Yes, but it's also like killing an ant with a hammer. A > little overkill > >when you're doing basic bit-shifting. > > > >Sure, C might be able to do a LOT more than C, but why do you want to > >write 100 lines of code when you can do it in 4? > > > >Jason DeStefano wrote: > >> > >> heh. no, i mean C. it does a LOT more than perl--and a lot > faster too. :) > >> > >> At 05:31 PM 3/11/01 -0600, you wrote: > >> >On Sun, 11 Mar 2001, Jason DeStefano wrote: > >> > > >> >> Yeah, its called "C". > >> > > >> >You mean "Perl". > >> > > >> >2.5.9 Shift Operators > >> > > >> >The bit-shift operators (<< and >>) return the value of > the left argument > >> >shifted to the left (<<) or to the right (>>) by > >> >the number of bits specified by the right argument. The > arguments should > >> >be integers. For example: > >> > > >> >1 << 4; # returns 16 > >> >32 >> 4; # returns 2 > >> > > >> >Andy > >> > > >_______________________________________________ > >tclug-list mailing list > >tclug-list at mn-linux.org > >https://mailman.mn-linux.org/mailman/listinfo/tclug-list > > > > _______________________________________________ > tclug-list mailing list > tclug-list at mn-linux.org > https://mailman.mn-linux.org/mailman/listinfo/tclug-list >