## command rand and functions

on 9 May 2013

### Youssef Khmou (view profile)

Hi guys I have this question as an assignment question can someone help out please thanks :)

Suppose you are at a casino playing roulette and that you are betting on black to turn up. You start by betting \$1. If you win you bet another \$1 in the next game. If you lose double your previous bet. You will stop playing when you have either won at least 10 or lost more than \$100. By use of script file simulate this system.Then play the game 5000 times and record your performance.

Hint: use the command rand

James Tursa

### James Tursa (view profile)

on 9 May 2013

What code have you written or outlined so far?

Image Analyst

on 10 May 2013
Randy Souza

### Randy Souza (view profile)

on 24 May 2013

I have restored the original text of this question.

@Charlene: this question has an accepted answer, so it may be valuable to someone else in the future. If you have a good reason why it should be removed from MATLAB Answers, please flag the question, explain why it should be deleted, and an administrator or high-reputation contributor will consider deleting the question. Please do not simply edit your question away.

## Products

No products are associated with this question.

### Youssef Khmou (view profile)

on 10 May 2013
Edited by Youssef Khmou

### Youssef Khmou (view profile)

on 10 May 2013

hi, try and verify this version:

```N=5000;
S=zeros(1,N);
S(1)=1; % 1\$
```
``` win=0;
lost=0;
threshold=0.5;
for n=1:N-1```
```r=rand();
if r>=threshold
win=win+1;
S(n+1)=1+S(n);
elseif r<threshold
lost=lost+1;
S(n+1)=S(n)-2;
end
if win>10
disp('  Congra!  you won the game');
break;
end
if lost>50
disp(' You lost');
break;
end
end
figure, plot(S(1:n)), title(' Game progress')
```

José-Luis

### José-Luis (view profile)

on 24 May 2013

#### Join the 15-year community celebration.

Play games and win prizes!

MATLAB and Simulink resources for Arduino, LEGO, and Raspberry Pi