Simple While Loop 1

[chrismoore2]

I have been beating my head against a wall on something so simple. Will someone put me out of my misery please

Attached is the simple sheet. Please tell me where I am going so wrong.

 

[CRG]

I couldn't see anything wrong. Then again, I couldn't see anything. Double check your file that you posted.

 

[chrismoore2]

Well, now I am home and dont have the file.

SS: |h <-- 1
|b <-- 1
|Sa < -- b + h
| while Sa ≤ 10
| h <-- h + 1
|return h

the program says basically i have an infinite loop. dont get it
I have done it without the return statement as well and get the same answer. I should get ss = 9

any ideas?

 

[WolfHR]

It seems that your loop increases h, but does not calculate Sa in the loop... My guess is that you should put Sa <-- b+h in the while loop, and then the loop will not be infinite. HTH

 

[chrismoore2]

Doesnt work either

SS: |h <-- 1
|b <-- 1
| while Sa ≤ 10
|Sa < -- b + h
|h <-- h + 1
|return h

ss = 11

should be 9

 

[chrismoore2]

Tried changing the inequality sign

SS: |h <-- 1
|b <-- 1
| while Sa < 10
|Sa < -- b + h
|h <-- h + 1
|return h

ss = 10

still should be 9

 

[WolfHR]

No, it shouldn't be 9- when Sa is 9, it's still <10 so the loop gets executed one more time. Condition should be Sa<9.

 

[chrismoore2]

Hmmm... I get what you are saying. The example was a simplistic situation for what I am really trying to calculate. I attached the mathcad and a pdf just in case. Am I not passing the arguments correctly? I have done other loops without a problem, cannot see why this one is not okay.

http://files.engineering.com/getfil...4649-86d1-fd2b4343a48f&file=loop_problem.xmcd

http://files.engineering.com/getfile.aspx?folder=1c1ffc5e-f1f9-4688-af23-0830f52c4ad4&file=loop.pdf

 

[israelkk]

Look at the help for the While command. While goes until condition is met. If you are looking for a specific number of loops use the For loop command. It seems the While command start counting from zero and not from one.

 

[chrismoore2]

yea, did that, and all the other internet searches I could, to no avail. The while command can start from any point, and I have no idea how many iterations it will take to get to my result, hense the reason for using the while loop

 

[chrismoore2]

Anyone?

 

[IRstuff]

This seems to be an awfully complicated way to avoid a solve block.


I get 317.857 mm with a solve block. :

http://files.engineering.com/getfile.aspx?folder=5ade2df8-e1cf-4793-85b2-22879c1523af&file=size.mcd

TTFN

FAQ731-376
Chinese prisoner wins Nobel Peace Prize

 

[jghrist]

I have ver. 13, so I couldn't load your .xmcd file, but from the .pdf file, it seems that you don't define Sa before the while loop, so it never is > 25ksi and h stays at 5 mm.