Maximum PC

Hey, so i'm writing a program that calculates the slugging percentage. I'm just learning the function thing in C++ so any help is appreciated. I think i have some major error in hear, but i'm not sure how to fix them. I'd like to keep the current format/shell/layout so please don't reccomend any changes. Thanks in advance!

What class is this for?

introduction to programming 1

I thought so.

We don't do homework support here. We do help .. but you have to be more specific than 'this doesn't work'.

Here are some guidelines:

* We are not going to copy / paste your code into our compilers and trouble-shoot. If it doesn't work, give us a DETAILED description of what is going wrong .. including compiler errors. We'll guess and explain why we think something may be amiss, but we won't debug your work .. that is your job.

* We are happy to provide supplemental advice on top of your prof's teaching. If you don't understand a concept, we'll happily expand on it. Good: I don't really understand how encapsulation supports OOP.

* We will help you tune a program if you tell us what you think is wrong or what you are looking for .. but we will never actually provide the code. We might tell you to replace one data structure with another, for instance, but we will not actually provide you with the code.


So .. what is your program NOT doing?

Ok, sorry.

Just to clarify, this isn't homework, but in class work that i can get help with, but i hate waiting 3 days to get support. Second of all, i can't actually check right now because the only mac in my house (i use xcode) is being used. I do remember that there were no errors visible in the code, but when i clicked on like "error location," it came up with some reference error or something. I'll put up specifics tomorrow.

Sorry for my presumptuous attitude

No need to apologise ... I need to put the rules into a sticky or something.

I'll take a closer look at your code when I get a chance .. and I'm sure others will as well.

Okay, I am a nice guy and I had a few minutes to drop it into a compiler. Now, the only thing is I am in Windows XP, and working under Visual Studio 2008:

I get 4 errors:


Error on middle line:

These next three errors, all go with the last block of code:






Here are my hints:

• You are missing an #include.
• Your function definition is incorrect.
• You also have some mis-matched types in your program.
• I fixed it by typing 31 characters and deleting one line.

Ya, i fixed it in class, but thanks for all the help. I just had some careless mistakes that Crashtech helped me find.

Don't feel too bad... I recently spent over an hour fighting with an application I am working on in C++ because I left out a single ;



I program for a living... but C++ is NOT the language I use every day. I haven't even touched it in a couple years now and I just forget all those differences between it and C#. I have probably written 20 to 30 times as many lines of C# as I have C++.

/me points finger... =)

OK, I was a little bored and decided to code this up in LISP. One of the first things that caught my eye was the fugly equation in calculate.

I would highly recommend reducing all your equations before implementing them unless you have a really good reason not to do so.



Note: the 1.0 at the end of the last line of code causes the LISP interpreter to return a floating point value instead of a ratio (ie .5 vs 1/2).

Masochist.

LOL... coming from someone who spent an hour hunting down a semi-colon?! Actually, LISP is still the most commonly used language for prototyping -- that's because it rocks.

Ha! Don't laugh it will happen to you as well!



Yes, the LISP porgramming language is unmatched in its ability to transform the difficult-to-understand into the completely unfathomable.

/me runs for cover...

LOL... Oh, I gave up chasing down semi-colons a long time ago. My philosophy goes something like "unless you're writing system software, why the hell are you using C?". I've never had a problem keeping Java straight, probably due to the compiler writers over at Sun more than anything else.


If it wasn't so late, I might bother...

As there aren't any new interesting topics, I'll go ahead and bother. =)

The other day I decided to write a couple small scripts to help me add id3 tag info to a bunch of old mp3 files that I ripped back in the Napster days using BladeEnc on Linux. There were something like 500 files, and I didn't want to have to shuffle songs around in a program like Tag&Rename or MP3Tag (and I felt like doing some programming), so I decided to write a script to append the track number to the front of the file. Then when I opened the file up in either program, they'd largely be in the correct order and I would just swap one or two songs around and be done with it.

I was going to write a short script to download the song info from one of the song databases, but a friend called during this part of the project, so I ended up doing this part by hand while talking to her on the phone. I created a text file with the raw song info and would read it into an association list (aka a-list or "poor man's hash table"). Basically, it is a list of lists where the first element in each sub-list is the key. It looked something like...

'(("song 1" 3) ("song 2" 9) ...) ;;where 3 is the track # for song 1

Of course, it had approximately as many entries as there were songs/files that needed track info. I figured there were probably going to be any collisions. Anyways, as you can imagine, quite a few of them didn't match up due to spelling/naming issues and what not.

I needed to sort the list based on the song names...
This is the part where you show us an easy way to do it in C++.

I also wanted to make sure that there were any name collisions.
Again, you're turn.

This should be interesting...

I didn't hunt for the semi because I WANTED to... lol

Anybody who chooses to program in LISP wants to hurt themselves

You want a hash table where the song name is the key and the track is the elements?

[EDIT: I deleted the contents of this comment because I got a little too mean with it - Spazz]

Oh snap!