/prog/ - [C]: printf / scanf functions are evil

Name: Anonymous 2009-10-19 20:47

I'm just starting to learn C and the first exercise made in class was to make a program that prints the sum of two integers.

This program:



#include <stdio.h>

#include <stdlib.h>

int main (void) {

  int n1,n2;

  printf("1st int: ");

  scanf("%d",&n1);

  printf("2nd int: ");

  scanf("%d",&n2);

  printf("Sum = %d\n",n1+n2);

  return EXIT_SUCCESS;

}

I showed it to some of my older classmates and went batshit insane with it saying: DO NOT USE PRINTF AND SCANF, THEY ARE NOT FUCKING SAME and other stuff.

Will someone please input on this matter?
Thank you!

Name: Anonymous 2009-10-20 12:39

>>40
Hangboo?

Name: Anonymous 2009-10-20 13:47

>>38
Has never reversed any Korean protocol or executable. Return to the board whence you came, please.

Name: Anonymous 2009-10-20 14:56

>>42
Koreans have their own executable formats?

Name: Anonymous 2009-10-20 15:20

>>43
yes they come in 7.62 and 5.56 millimeter sizes in a variety of lengths

Name: Anonymous 2009-10-20 15:26

>>42
Yeahh, Japanese protocols and code are so much better!!

Name: Anonymous 2009-10-20 15:37

>>39
this

Name: Anonymous 2009-10-20 16:18

>>44
back to /k/, please

Name: Anonymous 2009-10-20 16:28

>>47
coders and guns
go together like
beer and breakfast
son

Name: Anonymous 2009-10-20 16:46

>>48
back to /howToBeAHaxxor/, esr

Name: Anonymous 2009-10-20 16:53

>>49
Say that to my Heckler and Koch MR556 in person and see what happens.

Name: Anonymous 2009-10-20 18:04

>>50
Are you serious? gtfo

Name: Meme Explainer 2009-10-20 19:08

>>51
>>50 was referring to the popular ``Say that to my face'' meme, which originated on the /v/ - Video Games - 4chan image boards.

Name: Anonymous 2009-10-20 19:09

>>51
____ _____ _ _ ___ ____
| _ \| ____| \ | |_ _/ ___|
| |_) | _| | \| || |\___ \
| __/| |___| |\ || | ___) |
|_| |_____|_| \_|___|____/

Name: Anonymous 2009-10-20 19:36

>>53
______________ < U MENA PENIS > -------------- \ ^__^ \ (oo)\_______ (__)\ )\/\ ||----w | || ||

Name: UMH memesmith !gNlkr4vCuc 2009-10-20 19:48

>>54
ffff

Name: Leah Culver !1LEahRIBg. 2009-10-20 19:53

>>55
Oh shut the hell up UMH memesmith it's out of your hands and bitching won't solve anything.

Name: Anonymous 2009-10-20 20:13

>>54-56
Failed attempt at … I hardly know where to start. A life, I guess.

Name: Anonymous 2009-10-20 21:10

>>57
Starting a life is a job for either a Lisp program, or a real woman with ovaries.

Name: Anonymous 2009-10-22 11:22

WILL SOME ONE JUST FUCKING FIX OP'S PROGRAM?!

Name: Anonymous 2009-10-22 11:24

>>59
No

Name: Anonymous 2009-10-22 12:48

>>59
Hi OP

Name: Anonymous 2009-10-22 13:51

;; >>59

;; Sure thing bro

(defun prompt (prompt)

  (princ prompt *query-io*)

  (read *query-io*))

(format t "Sum = ~a"

        (+ (prompt "1st int: ")

           (prompt "2nd int: ")))

Name: Anonymous 2009-10-22 13:52

>>62
Now do it with (let).

Name: Anonymous 2009-10-22 15:06

>>62



CL-USER> ;; Sure thing bro

(defun prompt (prompt)

  (princ prompt *query-io*)

  (read *query-io*))

(format t "Sum = ~a"

        (+ (prompt "1st int: ")

           (prompt "2nd int: ")))

1st int: #. (loop (print (eval (read))))

(princ "I haxed your anus!")

I haxed your anus!

"I haxed your anus!"

Name: Anonymous 2009-10-22 16:28

>>59

-- Sure thing bro

import System.IO

main = mapM (\p -> putStr p >> hFlush stdout >> getLine >>= readIO) ["Int 1: ", "Int 2: "] >>= print . sum

Name: Anonymous 2009-10-22 17:31

>>59

# Sure thing bro

say<>+<>

Name: Anonymous 2009-10-22 17:59

>>65

import System.IO

main = mapM ((>>readLn) . (>>hFlush stdout) . putStr) ["1st int: ","2nd int: "] >>= putStrLn . ("Sun = "++) . show . sum

Name: Anonymous 2009-10-25 20:46

>>66
Invalid perl code :(

Name: Anonymous 2009-10-25 21:00

>>66
This only works if you hit ctrl+D after typing in the numbers.

Name: Anonymous 2009-10-25 21:32

Sure thing, bros.

10 INPUT "1st int: ", n1%

20 INPUT "2nd int: ", n2%

30 PRINT "Sum = ", n1% + n2%

Name: Anonymous 2009-10-26 1:16

>>68
It works inside a -E at least. If you're actually running it as a file you need a version declaration.　：（
Or you could do it the old way: print<>+<>,"\n"
>>69
No, lern2perl.

Name: Anonymous 2009-10-26 22:26

>>70
Hook me up with the QBasic interpreter

Name: Anonymous 2009-10-27 0:34

>>72
http://www.sendspace.com/file/qq5t9a

Name: Anonymous 2009-10-27 7:49



(defmacro twice (f x)

 `(,f ,@`(,x ,x)))



(twice + (read))

Name: Anonymous 2009-10-27 11:39

>>74
And people say Perl has too many punctuation marks.

Name: Anonymous 2009-10-27 12:15

>> 75 eh, there's not much shit in the standard readtable

Name: Anonymous 2009-10-27 16:03

>>75
eval "eval \"eval \\\"print \\\\\"Sure, whatever\\\\\"\\\"\"";

Name: Anonymous 2009-10-27 16:08

>>77
EVAL MY ANUS

Name: Anonymous 2009-10-27 16:38

>>77

compose n f

  | n < 1 = f

  | otherwise = f . compose (n - 1) f



main = putStrLn . compose 9 show $ "Sure, whatever"

Name: Anonymous 2009-10-27 17:02

fix show

[C]: printf / scanf functions are evil

1 Name: Anonymous 2009-10-19 20:47

41 Name: Anonymous 2009-10-20 12:39

42 Name: Anonymous 2009-10-20 13:47

43 Name: Anonymous 2009-10-20 14:56

44 Name: Anonymous 2009-10-20 15:20

45 Name: Anonymous 2009-10-20 15:26

46 Name: Anonymous 2009-10-20 15:37

47 Name: Anonymous 2009-10-20 16:18

48 Name: Anonymous 2009-10-20 16:28

49 Name: Anonymous 2009-10-20 16:46

50 Name: Anonymous 2009-10-20 16:53

51 Name: Anonymous 2009-10-20 18:04

52 Name: Meme Explainer 2009-10-20 19:08

53 Name: Anonymous 2009-10-20 19:09

54 Name: Anonymous 2009-10-20 19:36

55 Name: UMH memesmith !gNlkr4vCuc 2009-10-20 19:48

56 Name: Leah Culver !1LEahRIBg. 2009-10-20 19:53

57 Name: Anonymous 2009-10-20 20:13

58 Name: Anonymous 2009-10-20 21:10

59 Name: Anonymous 2009-10-22 11:22

60 Name: Anonymous 2009-10-22 11:24

61 Name: Anonymous 2009-10-22 12:48

62 Name: Anonymous 2009-10-22 13:51

63 Name: Anonymous 2009-10-22 13:52

64 Name: Anonymous 2009-10-22 15:06

65 Name: Anonymous 2009-10-22 16:28

66 Name: Anonymous 2009-10-22 17:31

67 Name: Anonymous 2009-10-22 17:59

68 Name: Anonymous 2009-10-25 20:46

69 Name: Anonymous 2009-10-25 21:00

70 Name: Anonymous 2009-10-25 21:32

71 Name: Anonymous 2009-10-26 1:16

72 Name: Anonymous 2009-10-26 22:26

73 Name: Anonymous 2009-10-27 0:34

74 Name: Anonymous 2009-10-27 7:49

75 Name: Anonymous 2009-10-27 11:39

76 Name: Anonymous 2009-10-27 12:15

77 Name: Anonymous 2009-10-27 16:03

78 Name: Anonymous 2009-10-27 16:08

79 Name: Anonymous 2009-10-27 16:38

80 Name: Anonymous 2009-10-27 17:02