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c project

 
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  #1
Jul 29th, 2009
i'm tying 2 describe my problem here.plz solve it for me..

1. generate a random number b2in 0 and 1 (r);
2. do t=r*2.5 ;
3. do w= t/100
4. keep track of all t1,t2,t3.... in an array and do the sum S=(t1+t2+t3......) ;
5. repeat steps 1,2,3,4, till S<100
6. store the corresponding w1,w2,w3... in another array/ heap
7. sort them in ascending order.
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Re: c project

 
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  #2
Jul 29th, 2009
Show some effort!

http://www.daniweb.com/forums/announcement118-2.html
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Re: c project

 
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  #3
Jul 29th, 2009
its not a place that we can solve your homework problem.

still take some hints and show ur effort , the code you have tried so far.Then only you can expect something from this forum.

1)rand() function is used to generate random numbers.

c Syntax (Toggle Plain Text) 
  1. int y=rand();
  2. int num=(y-1)/y;

then you proceed with your next steps...

Thanks,
DP
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Re: c project

 
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  #4
Jul 29th, 2009
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Originally Posted by Dream2code View Post
its not a place that we can solve your homework problem.

still take some hints and show ur effort , the code you have tried so far.Then only you can expect something from this forum.

1)rand() function is used to generate random numbers.

c Syntax (Toggle Plain Text) 
  1. int y=rand();
  2. int num=(y-1)/y;

then you proceed with your next steps...

Thanks,
DP
Num will be always 0
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Re: c project

 
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  #5
Jul 29th, 2009
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Originally Posted by ithelp View Post
Num will be always 0
Hey sory i forgot about type casting as i was giving a dummy code.
c Syntax (Toggle Plain Text) 
  1.  
  2. int y=rand();int num=(y-1)/y;int y=rand();
  3. float num=(float) (y-1)/y;


it should be type cased to float.
Thanks,
DP
Last edited by Dream2code; Jul 29th, 2009 at 5:42 am.
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Re: c project

 
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  #6
Jul 29th, 2009
i tried but everytime it shows 0.00000
and no other value

i tried it another way....
with the srand() function
but all it gives between 0 and 1 is 0
but what i want is 0.1 or 0.2... something like that
how can i get it?
and it's notlike i haven't work with the algo
just i couldn't
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Re: c project

 
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  #7
Jul 29th, 2009
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Originally Posted by atreyeepal1 View Post
i tried but everytime it shows 0.00000
and no other value

i tried it another way....
with the srand() function
but all it gives between 0 and 1 is 0
but what i want is 0.1 or 0.2... something like that
how can i get it?
and it's notlike i haven't work with the algo
just i couldn't
try like this...

c Syntax (Toggle Plain Text) 
  1. int y=rand();  //y should be an integer
  2. float num=(float)(y-1)/y; //num should be a float and its typecasted
  3. printf("%d\t%f",y,num);

if you want to know more about random number generators
goto:

http://www.eternallyconfuzzled.com/a..._art_rand.aspx
Last edited by Dream2code; Jul 29th, 2009 at 10:45 am.
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Re: c project

 
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  #8
Jul 29th, 2009
> i tried but everytime it shows 0.00000
> and no other value
> i tried it another way....
Look, just post some actual code, and describe what doesn't work in that particular program.

Don't just post "I tried x y and z, and it didn't work".
We can't help you fix your mistakes if you never show us any code to begin with.
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Re: c project

 
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  #9
Jul 30th, 2009
if i want 2 create 40 random numbers
logically it should be done by a for loop
i tried as follows
but it shows 1 number.
i can't understand my faults

c Syntax (Toggle Plain Text) 
  1. #include<stdio.h>
  2. #include<stdlib.h>
  3. #include<time.h>
  4.  
  5. int random(void)
  6. {
  7. 	return(1+rand()%3);
  8. }
  9.  
  10. int main(void)
  11. {
  12. 	int i;
  13. 	srand(time(0));
  14.     for(i=0;i<40;i++);
  15. 	printf("the number is %d\n",random());
  16. }
Last edited by John A; Jul 30th, 2009 at 3:05 pm. Reason: added code tags
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Re: c project

 
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  #10
Jul 30th, 2009
i tried to the algo as follows
i've changed the algo a bit
1.r=1+rand()%3;
2.t=r*1.25;
3.do w= t/100;
4. keep track of all t1,t2,t3.... in an array /* upto this is ok*/
and do the sum S=(t1+t2+t3......) ;/*from this step i can't do*/
5. repeat steps 1,2,3,4, till S<100
6. store the corresponding w1,w2,w3... in another array/ heap
7. sort them in ascending order.
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