Shao Zhang wrote:
> Reply-To:
> Hi,
> I have some trouble to generate a random number. Please help.
> I use the current time for the seed:
>
> unsigned int gen_magic()
> {
> time_t cur;
> char *cur_time;
>
> time(&cur);
> cur_time = ctime(&cur);
>
> srandom((unsigned int) (atol(cur_time)));
>
> return random();
> }
>
> But everytime this function gets called, it is always return the same
> number:
>
> +------------+
> | number |
> +------------+
> | 1362961854 |
> | 1362961854 |
> | 1362961854 |
> | 1362961854 |
> | 1362961854 |
> | 1362961854 |
> | 1362961854 |
> +------------+
>
> There must be a better way to do this. Please tell me...
>
> Thanks.
What's wrong with:
srandom((unsigned int) (atol(cur_time)));
? Well, notice above that cur_time is a char *. This pointer should have the
same value
each time the program is run which is why you're getting the same answer. Try
instead:
srandom((unsigned int) (atol(cur)));
Which is what you really meant.
--
Jens B. Jorgensen
[EMAIL PROTECTED]
