Mail Archives: djgpp/1998/11/26/23:04:12
| Message-ID: | <000e01be198d$35d09da0$1cddefcf@chia>
|
| From: | "Chia" <chia AT top DOT net>
|
| To: | <djgpp AT delorie DOT com>
|
| Subject: | Re: Randomizing
|
| Date: | Thu, 26 Nov 1998 16:36:28 -0600
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| MIME-Version: | 1.0
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| Reply-To: | djgpp AT delorie DOT com
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It will always print the same thing because the random number hasn't =
been seeded.
To do that, use the following:
#include <stdlib.h>
#include <time.h>
srand(time(0));
Then use the code you've got.
This will seed the random number generator with the current time, =
producing a more random number.
Hope it helps!
[ chia AT top DOT net ]
[ jared AT underdark DOT net ]
[ ab031 AT thor DOT unomaha DOT edu ]
----- Original Message -----=20
From: Lazer ---=A4---=20
Newsgroups: comp.os.msdos.djgpp
To: Djgpp mailing list=20
Sent: Thursday, November 26, 1998 3:00 PM
Subject: Randomizing
Would anyone show me how to use rand()!!
=20
I nede to get it to chose from 2 numbers
=20
i've tryed this:
=20
***********************************
#include <stdio.h>
=20
int main()
{
int my_number;
my_number=3Drand()%2;
printf("%d", my_number);
}
***********************************
=20
It always print 0 on the screen
=20
Thanks!!
=20
---> Lazer
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<DIV><FONT face=3D"Times New Roman" size=3D2>It will always print the =
same thing=20
because the random number hasn't been seeded.</FONT></DIV>
<DIV><FONT face=3D"Times New Roman" size=3D2>To do that, use the=20
following:</FONT></DIV>
<DIV> </DIV>
<DIV><FONT face=3D"Times New Roman" size=3D2> #include =
<stdlib.h></FONT></DIV>
<DIV><FONT face=3D"Times New Roman" size=3D2> #include =
<time.h></FONT></DIV>
<DIV> </DIV>
<DIV><FONT face=3D"Times New Roman" size=3D2> =20
srand(time(0));</FONT></DIV>
<DIV> </DIV>
<DIV><FONT face=3D"Times New Roman" size=3D2>Then use the code you've=20
got.</FONT></DIV>
<DIV> </DIV>
<DIV><FONT face=3D"Times New Roman" size=3D2>This will seed the random =
number=20
generator with the current time, producing a more random =
number.</FONT></DIV>
<DIV> </DIV>
<DIV><FONT face=3D"Times New Roman" size=3D2>Hope it helps!</FONT></DIV>
<DIV> </DIV>
<DIV>[ <A href=3D"mailto:chia AT top DOT net">chia AT top DOT net</A> ]<BR>[ <A=20
href=3D"mailto:jared AT underdark DOT net">jared AT underdark DOT net</A> ]<BR>[ <A=20
href=3D"mailto:ab031 AT thor DOT unomaha DOT edu">ab031 AT thor DOT unomaha DOT edu</A> =
]</DIV>
<BLOCKQUOTE=20
style=3D"BORDER-LEFT: #000000 2px solid; MARGIN-LEFT: 5px; MARGIN-RIGHT: =
0px; PADDING-LEFT: 5px; PADDING-RIGHT: 0px">
<DIV style=3D"FONT: 10pt arial">----- Original Message -----=20
<DIV style=3D"BACKGROUND: #e4e4e4; font-color: black"><B>From:</B> <A=20
href=3D"mailto:lazer_hassing AT yahoo DOT com" =
title=3Dlazer_hassing AT yahoo DOT com>Lazer=20
---=A4---</A> </DIV>
<DIV><B>Newsgroups:</B> comp.os.msdos.djgpp</DIV>
<DIV><B>To:</B> <A href=3D"mailto:djgpp AT delorie DOT com"=20
title=3Ddjgpp AT delorie DOT com>Djgpp mailing list</A> </DIV>
<DIV><B>Sent:</B> Thursday, November 26, 1998 3:00 PM</DIV>
<DIV><B>Subject:</B> Randomizing</DIV></DIV>
<DIV><BR></DIV>
<DIV><FONT size=3D2>Would anyone show me how to use =
rand()!!</FONT></DIV>
<DIV><FONT size=3D2></FONT> </DIV>
<DIV><FONT size=3D2>I nede to get it to chose from 2 =
numbers</FONT></DIV>
<DIV><FONT size=3D2></FONT> </DIV>
<DIV><FONT size=3D2>i've tryed this:</FONT></DIV>
<DIV><FONT size=3D2></FONT> </DIV>
<DIV><FONT size=3D2>***********************************</FONT></DIV>
<DIV><FONT size=3D2>#include <stdio.h></FONT></DIV>
<DIV><FONT size=3D2></FONT> </DIV>
<DIV><FONT size=3D2>int main()</FONT></DIV>
<DIV><FONT size=3D2></FONT><FONT color=3D#000000 =
size=3D2>{</FONT></DIV>
<DIV><FONT size=3D2>int my_number;</FONT></DIV>
<DIV><FONT size=3D2>my_number=3Drand()%2;</FONT></DIV>
<DIV><FONT size=3D2>printf("%d", my_number);</FONT></DIV>
<DIV><FONT color=3D#000000 size=3D2>}</FONT></DIV>
<DIV><FONT color=3D#000000=20
size=3D2>***********************************</FONT></DIV>
<DIV><FONT color=3D#000000 size=3D2></FONT> </DIV>
<DIV><FONT color=3D#000000 size=3D2>It always print 0 on the =
screen</FONT></DIV>
<DIV><FONT color=3D#000000 size=3D2></FONT> </DIV>
<DIV><FONT color=3D#000000 size=3D2>Thanks!!</FONT></DIV>
<DIV><FONT color=3D#000000 size=3D2></FONT> </DIV>
<DIV><FONT color=3D#000000 size=3D2>--->=20
Lazer</FONT></DIV></BLOCKQUOTE></BODY></HTML>
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