Solved

For loop

Posted on 2006-11-01
11
283 Views
Last Modified: 2010-04-15
Hi,

How is the following loop interpreted?

Thank you.

for (i=56;i>0;){
0
Comment
Question by:IAJWDDIY
  • 5
  • 3
  • 2
  • +1
11 Comments
 
LVL 16

Expert Comment

by:imladris
ID: 17850729
Set i to 56.

Then, as long as i is greater than 0
execute the following compound statement.
0
 
LVL 86

Expert Comment

by:jkr
ID: 17850730
'i' is initialized to 56 and the loop is executed as long as 'i' does not drop below '1'. However, since the 'loop expression' (as in "for( [init-expr]; [cond-expr]; [loop-expr] )") does not change 'i', it has to be altered inside the loop body to meet that criteria.
0
 
LVL 30

Expert Comment

by:callrs
ID: 17850733
Loop starts with i equal to 56
Continues to loop while i is greater than 0
0
Efficient way to get backups off site to Azure

This user guide provides instructions on how to deploy and configure both a StoneFly Scale Out NAS Enterprise Cloud Drive virtual machine and Veeam Cloud Connect in the Microsoft Azure Cloud.

 
LVL 30

Expert Comment

by:callrs
ID: 17850751
0
 
LVL 30

Expert Comment

by:callrs
ID: 17850856
Need to reduce i, else you have infinite loop. This will reduce it by one on each iteration of the loop:

for (i=56;i>0;i--){
0
 
LVL 86

Expert Comment

by:jkr
ID: 17850877
>>Need to reduce i

What was unclear about "However, since the 'loop expression' [...] does not change 'i', it has to be altered inside the loop body to meet that criteria."?
0
 

Author Comment

by:IAJWDDIY
ID: 17850985
So if there is a statement like:

 a=z[i-] ; b=z[i-].....

inside the loop would this reduce?

Thanks
0
 
LVL 86

Accepted Solution

by:
jkr earned 500 total points
ID: 17851056
Well, if they were like

a=z[i--] ; b=z[i--];

Yes, they would, e.g.

for (i=56;i>0;){

a=z[i--];
}
0
 

Author Comment

by:IAJWDDIY
ID: 17851079
Thank you.
0
 
LVL 30

Expert Comment

by:callrs
ID: 17851128
>>What was unclear

Nothing wrong with more clarity, adding the words "infinite loop', and giving an i--  option.   : )
0
 
LVL 30

Expert Comment

by:callrs
ID: 17851173

IAJWDDIY, it's almost hidden away, but there's a "Split points" link in open questions at the bottom ;)
0

Featured Post

DevOps Toolchain Recommendations

Read this Gartner Research Note and discover how your IT organization can automate and optimize DevOps processes using a toolchain architecture.

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

Suggested Solutions

Preface I don't like visual development tools that are supposed to write a program for me. Even if it is Xcode and I can use Interface Builder. Yes, it is a perfect tool and has helped me a lot, mainly, in the beginning, when my programs were small…
Examines three attack vectors, specifically, the different types of malware used in malicious attacks, web application attacks, and finally, network based attacks.  Concludes by examining the means of securing and protecting critical systems and inf…
The goal of this video is to provide viewers with basic examples to understand and use pointers in the C programming language.
The goal of this video is to provide viewers with basic examples to understand and use conditional statements in the C programming language.

809 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question