578 Topics
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| | I am a college student in China.My major is math，I want to go to learn programming，but it seems that I can't find a good way，I don't know the correct learning way.I think that I have been lost in useless learning.It's too terrible,my god!  |
 | Hi to All! I have a POS Software which I have developed in Java, NetBeans IDE. I am deploying this software on a variety of Windows Computers / Laptops for 5 years. I have used JFormattedTextFields for double data type in the whole Software. And I have set Format of … |
| | I am interested in technology, however I do not wish to go to university and after stumbling upon the MIT Challenge, I have taken it as a proof of concept. Clearly education is changing, and I would like to take a less traditional route. But before I go too far, … |
| | how can we use math .pi without using impot java.lang.Math*; PROGRAMING LANG:- JAVA |
 | Well, there was a thread about a frequency function and a bell curve in Excel. [url]http://www.daniweb.com/forums/thread295203.html[/url] So here it is how about to do the NORMDIST function in Excel in C#. |
 | I'm not good with math functions at all, but I've searched for a while and couldn't find anyone even touching on this subject. I'd like to have the price of $900 slowly approach $1500 between the dates of April 1st and August 1st. That's about $5 per day, and the …  |
 | # What Are Voronoi Diagrams? # Voronoi Diagrams are an essential visualization to have in your toolbox. The diagram’s structure is a data-driven [tessellation](https://en.wikipedia.org/wiki/Tessellation) of a plane and may be colored by random or to add additional information. ## Learn the Lingo ## The set of points that generate the … |
 | if i have X,Y(10,20) and the speed is 2, will be: X = X + 2 Y = Y + 2 ? same goes for Z or it depends on direction?(Y or X rotation)  |
 | I have created a table in a mySQL DB where users are going to a form and entering ratings on 6 Categories (5 Specific and 1 Overall) for a particular item_id. On the item table, I have a column that calculates the total number of ratings this particular item_id has … |
| | Wanted to let two forms work together. One form would be the input form and the main form would consume this data. I managed to succeed with the help of a few of my friends here at daniweb., who helped me setup a static form. Just posted a bit of … |
| | # Introduction # This tutorial provides guidance on gathering data through web-scraping. However, to demonstrate the real-life issues with acquiring data, a deep-dive into a specific, complicated example is needed. The problem chosen, acquiring the geographic coordinates of gas stations in a region, turns into an interesting math problem that, … |
| | Hello, friends. I did the fourth challenge on Project Euler and I'd like to know what I can do to improve the efficiency of my code. Right now it takes 1.562s to run and the source code is as follows: #include <iostream> #include <string.h> using namespace std; int Number = …  |
| | There are many pictures of hearts out there. I just wanted to draw a picture of a heart on my own from a math formula I found on the net. Seems there are many formulas to find. This is how it looks:  Enjoy! |
 | The present code snippet just does an especific task. This is, given an ordered sequence of natural numbers, starting at zero, generate all the different permutations there can be. When we talk about permutations, the order of the sequence does matter. So, the sequence 0, 1, 2 differs from 2, … |
 | I'm using this snippet to calculate the sum of two table cells. var sum = 0; $('.amount').each(function(){ sum += parseFloat($(this).text()); }); $('.sum').text(sum); But when the sum is for example 40.00 it displays as 40 and as picky as I am, i want it to display as 40.00. So... what to … |
| | Hello everyone, I am having trouble with my code to list all the prime numbers in R. This is what I have thus far: prime = 0:100 for(val in prime){ if (val == 0){ next } else if (val == 1){ next } else if(val == 2){ val = 2 … |
| | How to add, subtract, multiply and divide 2 different numbers from 2 different form. Pls help me. The code i think is way too simple example: (Result.text = result) (Text1.text = number from form2)(Text2,text = Number from form3). the code i think is like this and this one is not …  |
| | Short snippet in C# to do this classic trick, I could not find one on the web. Little, (even none!) error checking is done here. |
 | Hi, Daniweb. I have this hobby project I'm playing with where I need to generate data for a MonteCarlo simulation. The data needs to fit within a bell-curve around a given mean with a standard-deviation. I'm trying to figure out which random distribution system I need to use and how … |
| | Have you ever wanted to develop a math parser and evaluator? Are you in such a quandary or just have curiosity or interest in the matter? If so, you may download the complete source version 8.3.48 or later, but be warned there is almost no comment; or instead, follow versions …  |
| | Hi Friends. i am working on my internal work. i am having n dynamic rows, Each and every row contain total. i want to sum all the rows total. i have attached the screen shot for the reference |
| | I'm using mathjax in ckeditor and i want to print the fraction (uploaded here in the link [Click Here](http://tinypic.com/r/23k465g/9)).So,what command i have to write to print that fraction ? Here is what i'm trying : `$$7\(frac\({4}{3}\)\)$$` But it isn't working. So , please suggest me a solution  |
 | I am trying to display scores by what the user is requesting either 'Average','Total',or 'Both'. The following is my code for the loop_tester.php and below that is the code for my index.php. I am trying to add a switch statement to the index.php file that will sets values for only …  |
| | This program challenge was given to me by my Professor for extra credit. He said it includes some programming that we haven't learned yet in our C++ class. Messed up... Ideally I would love if someone would do this for me, but we all know that's not happening. lol Anyways...could … |
 | Hello everyone, I am posting this more generically in the software development section to see what might be available and to increase a possible success rate. But enough of that let's get to the question at hand. Recently, in C#, I started back up a project of mine to do …  |
| | Sorry for the vague title, but I'm using a PHP snippet on a WooCommerce shop which shows the difference between an old price and a new price (sale price) in a percentage bubble on the page. The thing is it shows also percentages with decimals behind a comma if it's … |
 | I want to show the total qty of these query (total qty from datagridview where ActualQty value will update the values of Used Column) `SELECT COUNT(Software) AS ActualQty FROM tblswlogs WHERE Software='MS EXCEL'` and (**Total** will appear in textbox) `SELECT MAX(used + initialqty) As Total FROM tblswlist WHERE Software = … |
| | One of the most, if not THE most, beautiful formulas in math, is from Euler:  It combines in it a relation between the number **e**, the number **Pi** and the complex number **i**, plus the basic math symbols 1, +, = and zero. Is that not amazing? More … |
 | [ATTACH=RIGHT]22199[/ATTACH]Ever wondered just how many domain names there are on the Internet? DaniWeb has, and can reveal the answer as being an almost astonishing 215 million worldwide. According to global Internet infrastructure provider and domain registrar Verisign, more than five million domain names were added to the total during the …  |
| | Cell C4 has the expression =565+660+709+1093 Is there a function/nest of functions that can output the number of values being added? BIG NOTE: I AM NOT ASKING FOR THE SUM OF THE EXPRESSION!  |
 | Just a couple of number tricks to check Go's mathematical abilities. If you have more, let's show them here. |
| | Use Google's modern Go language (aka. golang) to convert a denary number (base 10) to a roman numeral. Just a good exercise to explore Go's map, slice, sort and for loop features. Note that in Go the **:=** is shorthand for assigning a type (by inference) and a value to … |
| | For my own use, I'd like to develop a small Vector and a Matrix class, independent of some big libraries that exist out there. My question is: Should Vector and Matrix stay two independent entities or should I derive a Vctor frm a Matrix or a Matrix from a Vector? …  |
 | Greetings, I'm working on a class project for fractions and I'm stuck and cannot figure out where to go from here. We have a mandatory driver file we aren't supposed to change. See below for example output and the output I am actually getting. **Sample Output** Enter numerator; then denominator. …  |
| | I am trying to sort averages of scores in a class by pupil, from highest to lowest. My data is stored in text files like this: Charlie:0 Seema:2 Amber:4 Paige:5 Amber:8 Keith:1 Charlie:8 Seema:0 Charlie:9 Seema:3 Paige:0 Paige:4 Paige:4 Charlie:1 Keith:5 Keith:3 Here is my code so far: with open("class … |
| | I need to check my code has all these requirements. The requirements for “main()” are: a. Use an object. b. Declare all required variables. c. Output user information. d. Input the radius 1 and radius 2 to be used to calculate the area of two circles. e. Use object Circle …  |
 | Hi everyone i need some help down here. i am trying to connect multiple db and at the same time i want to sum the value of the column. what i have right now is this SELECT SUM(total) as branch1sales FROM icm.sales UNION SELECT sum(total) as branch2sales FROM hism.sales its … |
| | I'm sure this is simple, but I'm having a time trying to figure out how to add two fields from two different tables together. <?php include_once('conn/db.php'); $query = "SELECT SUM(`sold`) AS total FROM veggies"; $stmt = $con->prepare( $query ); $stmt->execute(); while ($row = $stmt->fetch(PDO::FETCH_ASSOC)){ extract($row); echo "<small><u>Plants Sold</u>: {$total}</small>"; } … |
 | Python helps in real life situation to automate things. This program helps you to prep up your kids ability to go over/under ten, which is essential not only by itself, but also when calculating with bigger numbers. Program is not any special, but shows how useful Python can be in … |
| | Good day guys, I would just like to share my code and wanted to do something about it. This code shows a loop inside a loop initializing a two-dimensional array named arr with elements [2] and [5]. Here's my code: #include <iostream> #include <conio.h> using namespace std; int main () …  |
| | The .Net Framework uses by default radians in its trigonometry calculations. Find out how to convert degrees to radians to use with C# |
| | Hello. I need to write a program to evaluate a definite integral with Simpson's composite rule. 1.  I know there is a Simpson's rule available in Scipy, but I really need to write it by the following scheme. 2.  , where a, b - limits of … |
| | You may be wondering what a superfecta actually is, and the answer is: the most dangerous and serious threat to business. To clarify, the superfecta as defined by secure cloud hosting outfit FireHost is a group of four attack vectors that comprises of Cross-Site Request Forgery (CSRF), Cross-Site Scripting (XSS), … |
| | Hey there, I'm having trouble getting my program to read every instruction to then execute it, as well as displaying everything correctly. Right now my program displays mainly garbage and for now I simply want it to be able to successfully run a simple addition program, so any advice or … |
| | Create a form that accepts scores from the user, displays the total, count, and average of the scores, and displays a dialog box that lists the scores.This application should check the number entered by the user to make sure it is a valid integer from 0 to 100. If a … |
| | Hello every one Can I have a better algorithm to find the nth prime number, where 1<= n <=5000000. for e.g., 1st prime number is 2. 10th prime number is 29. 100th prime number is 541. 1000th prime number is 7919. 10000th prime number is 104729. 100000th prime number is … |
| | Hi Guys, I'm Using Python 2.7.3 This is my txt file: TimeStamp,Irradiance 21/7/2014 0:00,0.66 21/7/2014 0:00,0.71 21/7/2014 0:00,0.65 21/7/2014 0:00,0.67 21/7/2014 0:01,0.58 21/7/2014 0:01,0.54 21/7/2014 0:01,0.63 21/7/2014 0:01,0.65 21/7/2014 0:02,0.64 21/7/2014 0:02,0.63 21/7/2014 0:02,0.63 21/7/2014 0:02,0.64 . . . . 22/7/2014 23:57,0.53 22/7/2014 23:58,0.69 22/7/2014 23:58,0.61 22/7/2014 23:58,0.65 22/7/2014 23:58,0.59 …  |
 | Hi, I want to Count the number of occurences of data in a table, then multiply it in a value from other table, After that I want to sum up the product of count and the value from other table, As of now, I cant count and then multiple but … |
 | Hello programmers! After covering the basics of STL, I decided to complete the following assignment: `Write a function template palindrome that takes a vector parameter and returns true or false according to whether the vector does or does not read the same forward a backward.` So, for example, a vector … |
| | Calculate the total area and volume occupied by a cylinder. Correct or not? #include <stdio.h> #include <math.h> int main() { float At, V, r, h; printf("\n ===========Calculate the total area and volume occupied by a cylinder============\n"); printf("\n the base radius.......: "); scanf("%f", &r); printf("\n Cylinder height.: "); scanf("%f", &h); At … |
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