Well, I want to have a program make a graph from the data that it has, so I looked up how to do that in Perl. The GD::Graph module came up. The problem is, that I tried installing GD previously and...

I have been using this code:

while (($key, $value) = each (%hash))

To iterate through a hash. However, the order of the keys that it retrieves are exactly the same each time i run the script. I...

GAH THREAD BUMPING

Anyway, I have a few answers. One thing you need to do is (in most cases) run this command

sudo tasksel install lamp-server

That will install the lamp server. (Linux,...

Thanks for the other error catch. Like I said, I'm going to wait to come back to this problem when I know about memory allocation. If I have to limit the amount of primes that I can find, why make it...

I get a floating point exception now. I'll revisit this when I learn about memory allocation...by the way, I'm using the massive book called the Internet

Thanks for the solution, but now it won't compile. Doesn't int *primes have to be an array?

okay, so I wrote a program in Perl to find prime numbers and, when learning C, I decided to translate it into C. The thing is that...well...it doesn't work. No matter what I do, I get the same...

Okay, so for the past week or so, I've been trying to set up a web server to...well...host a website. So I figured out how to install a LAMP server under Ubuntu and I got a free DNS hostname from...

It realizes that it's connected to something and tries to connect, but it always says it's disconnected in the end. The problem is that I don't know where the flash chip is

I have a Linksys WRT54G router for my home wireless network. However, I tried to flash it, but it bricked. How do I unbrick it? I searched Google and found a good tutorial to do this for the "WRT54G"...

Not compilers. Assemblers, you said it yourself. But the concept is the same.

Narue's tutorial is good, but this (http://tinyurl.com/d8dzp6) should help too.

Thanks, that worked. I was making a binary to decimal converter. Here's the code if anyone's interested:

#!usr/bin/perl -w

print "Binary number: \n";
$bin = <STDIN>;
chomp $bin;
$dec = 0;...

I'm having a problem with the substr function. I want it to be dynamic in a for loop as follows:

for ($i = substr $bin, $sub, 1 ; $sub < $len2 ; $sub++){

You can probably guess what this code...

Yeah, but that's a Microsoft product. And god forbid anything from Microsoft should be free

Was your computer on during the storm? If it was on and not connected to a surge protector or power strip, then it's pretty much gone. I don't think this is the case, though, because your power...

Here's another helpful tutorial on daniweb:
http://www.daniweb.com/forums/thread41309.html

I already had it on my list of websites for Assembly learning. Looks good to me.

Yeah, well, the compiler that it uses will be different, unless it's just gcc with an IDE...

Most CPU's in computers use x86. NASM and MASM and A86 are just different assemblers. If you've ever programmed in C, C++, Pascal, etc. before, it's like a compiler. There will be standard things on...

Okay, so I'm thinking of getting a simple wired router by Linksys or something just to practice some cisco networking things that I plan on learning a bit over the summer. You know, just some IOS...

Okay, so I've done a few of the things I mentioned:

#include <iomanip>
#include <iostream>
#include <cmath>
using namespace std;

double roundIt(double x, double n) {
x = floor( x *...

First of all, you're not using any brackets ({ and }) with your loops. Note that the code for a while loop is

while (condition) {
code goes here
}

The same goes for any conditional...

Daniweb is pretty good with helping people write code, actually. You just need to do some work. Anyway, I don't know if this will help a ton, but here's an article...

Here's the answer (http://tinyurl.com/c2qn3f)

These are sort of simple, but here's what I've done (and a few things I want to do):
1. a command-line calculator
2. find the factorial of a number
3. Fibonacci sequence (# of iterations or max...

Thanks. I was looking through the Perl documentation on regex, and I guess I missed that somewhere.

Hello, I'm just wondering how you would go about exporting the matches that regex finds. For example, if I were to have the following code, which matches all the digits in a string and (supposedly)...

New problem though...(i guess it's not really a problem, just something weird) When i put in 20 to find the factorial, I get -2102132736...now I know it's not a negative number. Is this just an...

I finally got this one! YES!!! Thanks everyone, I'm so ecstatic now. This thread is finally solved, I finally understand recursion, etc. etc. Hooray! And I was just beating myself up five minutes ago...

Why are you taking a programming/computer science class if you don't want to put any effort into it?

I had something before where it was:

for ((i = 2; i < num; i++){
if (num % i == 0){
primecheck = 1;
}
if (num %i != 0){
primecheck...

I am writing a program that will take input and find whether or not the number you put in is prime. The program works fine, save for one small problem:


#include <iostream>
using namespace std;...

Thanks very much.

Thanks very much. The only question I have is as to why it says that it took a negative number of wallclock seconds. The longer it takes, the lower the number, essentially. Do you know why this is?

Is there any way that I can get PERL to give me the elapsed time that it took to calculate something? I'm trying to make my algorithm for finding prime numbers more efficient, and obviously I can't...

The problem is that the file doesn't have any commands in it. It just says this:

#########################################################################
# .bash_profile: Personal...

I'm getting into bash shell scripting with Ubuntu 8.10, and the tutorial I'm using is telling me to open the file .bash_profile which is allegedly in the home directory. However, I cannot find this...

Thanks KevinADC, I just have two questions.
1) What is the +1 for after the int(rand 10)? I tried to see what happened if I got rid of it, and nothing was different.
2) Why is 1 the condition for...

You mean like this?

if ($guess < $thinkingof){
print "You guessed higher than $thinkingof.\n";
}

I tried that, and the randomness is working; each time, it's a different number.