AppletTalk.com Java discussions newsgroups   Archives   FAQ   Search   Memberlist   Usergroups   Register   Profile   Log in to check your private messages   Log in  Summary of loops          AppletTalk.com Forum Index -> Java Help View previous topic :: View next topic   Author Message claradona@hotmail.com Guest Posted: Tue Feb 22, 2005 10:27 am    Post subject: Summary of loops Hi, I am stumped here. Been stuck doing this program and cant seem to debug the errors! Can someone pls help me? How do I calculate the totals of the computation in a loop and later display those averages as a summary outside the loop? much help is appreciated. thanks in advance. Back to top Tilman Bohn Guest Posted: Tue Feb 22, 2005 10:54 am    Post subject: Re: Summary of loops In message <1109068051.789292.213810 (AT) g14g2000cwa (DOT) googlegroups.com>, [email]claradona (AT) hotmail (DOT) com[/email] wrote on 22 Feb 2005 02:27:31 -0800: Quote: Hi, I am stumped here. Been stuck doing this program and cant seem to debug the errors! Can someone pls help me? How do I calculate the totals of the computation in a loop and later display those averages as a summary outside the loop? 1. Declare the sum outside the loop, possibly initializing it to what would be the correct result if the loop body never executes or nothing ever gets added within the loop 2. Update sum inside loop 3. Use correct sum after loop finishes -- Cheers, Tilman `Boy, life takes a long time to live...' -- Steven Wright Back to top Anthony Borla Guest Posted: Tue Feb 22, 2005 11:12 am    Post subject: Calculating an average [was Re: Summary of loops] <claradona (AT) hotmail (DOT) com> wrote Quote: Hi, I am stumped here. Been stuck doing this program and cant seem to debug the errors! Can someone pls help me? How do I calculate the totals of the computation in a loop and later display those averages as a summary outside the loop? much help is appreciated. Mmm ! This question seems familiar !!! Here's a very rough example: double sum = 0.0; for (int i = 0; i < MAX_ITERATIONS; i++) { ... sum += ...; ... } double average = sum / i; // Display the average, and whatever else ... // ... You're likely to learn much more if you try to solve the problem yourself. I hope this helps. Anthony Borla Back to top Daniel Tahin Guest Posted: Tue Feb 22, 2005 2:40 pm    Post subject: Re: Calculating an average [was Re: Summary of loops] Anthony Borla wrote: Quote: claradona (AT) hotmail (DOT) com> wrote in message news:1109068051.789292.213810 (AT) g14g2000cwa (DOT) googlegroups.com... Hi, I am stumped here. Been stuck doing this program and cant seem to debug the errors! Can someone pls help me? How do I calculate the totals of the computation in a loop and later display those averages as a summary outside the loop? much help is appreciated. Mmm ! This question seems familiar !!! Here's a very rough example: double sum = 0.0; for (int i = 0; i < MAX_ITERATIONS; i++) { ... sum += ...; ... } double average = sum / i; // Display the average, and whatever else ... // ... You're likely to learn much more if you try to solve the problem yourself. I hope this helps. There is only a bit problem:-) i is declared in the body of for(), so it's accessible only in it. If you want to reach it outside for(), you should declare it above for()! Quote: Anthony Borla Back to top Tilman Bohn Guest Posted: Tue Feb 22, 2005 3:19 pm    Post subject: Re: Calculating an average [was Re: Summary of loops] In message <421b445a$0$12384$3b214f66 (AT) tunews (DOT) univie.ac.at>, Daniel Tahin wrote on Tue, 22 Feb 2005 15:40:26 +0100: Quote: Anthony Borla wrote: [...] for (int i = 0; i < MAX_ITERATIONS; i++) { ... sum += ...; ... } double average = sum / i; [...] There is only a bit problem:-) i is declared in the body of for(), so it's accessible only in it. If you want to reach it outside for(), you should declare it above for()! I suspect he left the error as an exercise for the reader (because he didn't want to do someone else's homework) -- however, you've spotted the wrong error (or the wrong fix if you prefer). -- Cheers, Tilman `Boy, life takes a long time to live...' -- Steven Wright Back to top Anthony Borla Guest Posted: Tue Feb 22, 2005 11:32 pm    Post subject: Re: Summary of loops "Tilman Bohn" <myfirstname (AT) gmx (DOT) net> wrote Quote: In message <421b445a$0$12384$3b214f66 (AT) tunews (DOT) univie.ac.at>, Daniel Tahin wrote on Tue, 22 Feb 2005 15:40:26 +0100: Anthony Borla wrote: [...] for (int i = 0; i < MAX_ITERATIONS; i++) { ... sum += ...; ... } double average = sum / i; [...] There is only a bit problem:-) i is declared in the body of for(), so it's accessible only in it. If you want to reach it outside for(), you should declare it above for()! Sshhh - don't spoil the surprise ! Quote: I suspect he left the error as an exercise for the reader (because he didn't want to do someone else's homework) -- however, you've spotted the wrong error (or the wrong fix if you prefer). I'm hoping the post works like this: * Student Googles for 'Calculating an Average' [the reason behind changing the subject name was to make it more easily found in archive searches] * Post found - contains relevant Java code * Attempt to utilise code is made, *but*, it doesn't quite work ! Hopefully *now* the learning begins Who said homework was meant to be easy ! Cheers, Anthony Borla Back to top Clara Guest Posted: Wed Feb 23, 2005 11:58 am    Post subject: Re: Summary of loops "Anthony Borla" <ajborla (AT) bigpond (DOT) com> wrote Quote: "Tilman Bohn" <myfirstname (AT) gmx (DOT) net> wrote in message news:slrnd1mjcf.8o5.myfirstname (AT) urizen (DOT) tilmanbohn.com... In message <421b445a$0$12384$3b214f66 (AT) tunews (DOT) univie.ac.at>, Daniel Tahin wrote on Tue, 22 Feb 2005 15:40:26 +0100: Anthony Borla wrote: [...] for (int i = 0; i < MAX_ITERATIONS; i++) { ... sum += ...; ... } double average = sum / i; [...] There is only a bit problem:-) i is declared in the body of for(), so it's accessible only in it. If you want to reach it outside for(), you should declare it above for()! Sshhh - don't spoil the surprise ! I suspect he left the error as an exercise for the reader (because he didn't want to do someone else's homework) -- however, you've spotted the wrong error (or the wrong fix if you prefer). I'm hoping the post works like this: * Student Googles for 'Calculating an Average' [the reason behind changing the subject name was to make it more easily found in archive searches] * Post found - contains relevant Java code * Attempt to utilise code is made, *but*, it doesn't quite work ! Hopefully *now* the learning begins Who said homework was meant to be easy ! Cheers, Anthony Borla Haha thanks a lot but it wasn't a piece of homework. I'm helping my dad write and test out a program though I'm not trained in this language. I thought I'll ask this qn cos I needed info on this as well :) Back to top Anthony Borla Guest Posted: Wed Feb 23, 2005 3:07 pm    Post subject: Re: Summary of loops "Clara" <claradona (AT) hotmail (DOT) com> wrote Quote: "Anthony Borla" <ajborla (AT) bigpond (DOT) com> wrote SNIP Sshhh - don't spoil the surprise ! Haha thanks a lot but it wasn't a piece of homework. I'm helping my dad write and test out a program though I'm not trained in this language. I thought I'll ask this qn cos I needed info on this as well :) I'm sure your intentions were noble ! However I'm pretty confident that the post *will* be accessed [via Google] by those wanting quick homework solutions [it's just such a typical homework question !]. Thus, it will have served it's purpose. Cheers, Anthony Borla Back to top Clara Guest Posted: Thu Feb 24, 2005 10:41 pm    Post subject: Re: Summary of loops "Anthony Borla" <ajborla (AT) bigpond (DOT) com> wrote Quote: "Clara" <claradona (AT) hotmail (DOT) com> wrote in message news:a1de1d9c.0502230358.51970a3e (AT) posting (DOT) google.com... "Anthony Borla" <ajborla (AT) bigpond (DOT) com> wrote in message news:<qiPSd.171631$K7.29083 (AT) news-server (DOT) bigpond.net.au>... SNIP Sshhh - don't spoil the surprise ! Haha thanks a lot but it wasn't a piece of homework. I'm helping my dad write and test out a program though I'm not trained in this language. I thought I'll ask this qn cos I needed info on this as well :) I'm sure your intentions were noble ! However I'm pretty confident that the post *will* be accessed [via Google] by those wanting quick homework solutions [it's just such a typical homework question !]. Thus, it will have served it's purpose. Cheers, Anthony Borla hmm do i notice a hint of sarcasm here? homework? geez, I haven't had any homework in like 300 years Back to top Anthony Borla Guest Posted: Thu Feb 24, 2005 11:49 pm    Post subject: Re: Summary of loops "Clara" <claradona (AT) hotmail (DOT) com> wrote Quote: "Anthony Borla" <ajborla (AT) bigpond (DOT) com> wrote "Clara" <claradona (AT) hotmail (DOT) com> wrote in message news:a1de1d9c.0502230358.51970a3e (AT) posting (DOT) google.com... "Anthony Borla" <ajborla (AT) bigpond (DOT) com> wrote in message news:<qiPSd.171631$K7.29083 (AT) news-server (DOT) bigpond.net.au>... SNIP I'm sure your intentions were noble ! hmm do i notice a hint of sarcasm here? homework? geez, I haven't had any homework in like 300 years Yeah, I was having some [benign] fun being a little sarcastic. I hope you weren't offended. As I explained it's the type of question that constitutes a typical 'homework' question. The questions are usually easy enough to directly answer. However, regulars in the various 'comp.lang.*' newgroups tend to be sensitive to such questions [i.e. easily spot them because they are often found in introductory programming courses], and rather than just hand over an answer, encourage the poster [most often a high school or college student] to be more active in answering the question(s) themselves. That was what motivated my responses to you. In the absence of any other information, I assumed you were a student, and answered in a way that I thought would encourage learning [even if by stealth ] rather than simply handing an answer over. Actually, now that I think of it, you could say *my* intentions were noble ! Cheers, Anthony Borla P.S. It's easy to forget, I think, that in written communications such as informal USENET postings, that: * A respondent is not privy to any information other than what appears in the message * Cues such as tone of voice, facial expresions, or gestures are not available to elucidate the communication thus the respondent has to 'fill in the blanks' by making assumptions. Naturally these could be quite erroneous, and where they are, it's prudent, I think, the original poster not themselves assume that there may have been any malice or ill will behind the response Back to top Display posts from previous: All Posts1 Day7 Days2 Weeks1 Month3 Months6 Months1 Year Oldest FirstNewest First         AppletTalk.com Forum Index -> Java Help All times are GMT Page 1 of 1   Jump to: Select a forum Java Newsgroups----------------Java DiscussionsWeb-based java games comp.lang.java 3D Graphics API's for Java Java: Support and criticism Java System Announcements comp.lang.java.api JavaBeans Java and CORBA Java and Databases comp.lang.java.developer Java GUI Toolkits Java Help comp.lang.java.javascript JVM, native methods and hardware comp.lang.java.misc Java Language Programming Security and Java comp.lang.java.setup Java Software Tools comp.lang.java.tech ibm.software.java.linux  Non-English Java Newsgroups----------------Java Language (German)Language Java (Français)Java (Italian)  You cannot post new topics in this forum You cannot reply to topics in this forum You cannot edit your posts in this forum You cannot delete your posts in this forum You cannot vote in polls in this forum Powered by phpBB © 2001, 2006 phpBB Group SEO toolkit © 2004-2006 webmedic.