/prog/ - random string in C

Name: Anonymous 2007-03-03 16:14 ID:/cSfevSk

Do you is like it ?



#include <stdio.h>

#include <malloc.h>



#define _randlen 100



char *randstr(size_t size) {

    char *str = (char*)malloc(size+1);

    str[size] = 0;

    while(size) str[--size] = rand()%26+(rand()%2?65:97);

    return str;

}

int main(int argc, char **argv) {

    char *str = randstr(_randlen);

    puts(str);

    free(str);

    return 0;

}

Name: Anonymous 2007-03-03 16:33 ID:rA7bKXCs

It works, but every time I run it it puts out the same string, so it's a string of random characters, but not a random string of characters.

Name: Anonymous 2007-03-03 16:37 ID:/cSfevSk

>>2 yeah sorry i forgot to seed rand..



#include <stdio.h>

#include <malloc.h>



#define _randlen 100



char *randstr(size_t size) {

    char *str = (char*)malloc(size+1);

    str[size] = 0;

    while(size) str[--size] = rand()%26+(rand()%2?65:97);

    return str;

}

int main(int argc, char **argv) {

    srand(time(NULL));

    char *str = randstr(_randlen);

    puts(str);

    free(str);

    return 0;

}

this works fine.

Name: Anonymous 2007-03-04 19:05 ID:Heaven

>>1

No, it's rubbish

Name: Anonymous 2010-10-03 12:05

_randlen
You're not writing an OS.

Name: Anonymous 2010-10-03 15:39

>>6
U MENA __randlen

Name: Anonymous 2010-10-04 21:52

#include <malloc.h>
what's wrong with stdlib?

also:
#define _GNU

_SOURCE

#include <stdio.h>

#include <string.h>

int main(void)

{

  char s[] = "sup /prog/";

  strfry(s);

  printf("%s\n", s);

  return 0;

}

Name: Anonymous 2011-02-03 6:32

Name: Anonymous 2011-02-04 15:08

Name: Anonymous 2011-02-04 15:59

Name: Anonymous 2012-03-24 3:44

I like it! I'm adding it to my general-use library of code snippets.

Name: Sgt.Kabu௻Ⳉkiman˦俶 2012-05-28 23:05

Bringing /prog/ back to its people
All work and no play makes Jack a dull boy
All work and no play makes Jack a dull boy
All work and no play makes Jack a dull boy
All work and no play makes Jack a dull boy
All work and no play makes Jack a dull boy
All work and no play makes Jack a dull boy
All work and no play makes Jack a dull boy
All work and no play makes Jack a dull boy
All work and no play makes Jack a dull boy
All work and no play makes Jack a dull boy
All work and no play makes Jack a dull boy

random string in C

1 Name: Anonymous 2007-03-03 16:14 ID:/cSfevSk

2 Name: Anonymous 2007-03-03 16:33 ID:rA7bKXCs

3 Name: Anonymous 2007-03-03 16:37 ID:/cSfevSk

4 Name: Anonymous 2007-03-04 19:05 ID:Heaven

6 Name: Anonymous 2010-10-03 12:05

7 Name: Anonymous 2010-10-03 15:39

8 Name: Anonymous 2010-10-04 21:52

9 Name: Anonymous 2011-02-03 6:32

10 Name: Anonymous 2011-02-04 15:08

11 Name: Anonymous 2011-02-04 15:59

12 Name: Anonymous 2012-03-23 23:41

13 Name: Anonymous 2012-03-24 3:44

14 Name: Sgt.Kabu௻Ⳉkiman˦俶 2012-05-28 23:05