Computer Science Forum

I am planning to create a program with some graphical representation of data from SQL database. What language to use to create graphs?

I've been studying computer science and computer programming for years now in high school. I've been accepted to universities that offer two different kinds of degrees. One is Computer Science and one is Software Engineering. I could go either way for which degree I get, I was just wondering if …

[B]I'm totally stuck on this problem for homework::[/B] *** [I]Write pseudocode to represent the logic of a program that allows the user to enter values that represent the radius of a Circle. The Program calculates the Diameter (by multiplying the Radius by 2) and then calculates the Circumference (by multiplying …

Hi, I want to learn either java, vb.net or web development. Also I want to create my own movie database. Question is what is the appropriate language to do a movie database? If you have other language in mind. please feel free to let me know and why you think …

Recently I opened game with "hex editor". You know, it's kind of program for newbies that makes it able to read program in hexadecimal code and make it able to turn, or rather read code and try to reverse engineer it by turning hexa's into Assembler commands(?). And then I …

This is not an assignment, teacher wants us to do this as a prereq for an assignment and his instructions are not clear enough for me to follow. I am using C: instead of E: I made the directory C:\sql and coppied the cmd.exe and pasted it. When I right …

Hey guys, i am facing a small problem here, perhaps you could give me any hints with it. In one of my courses (Program analysis) we are using a language called "The While language" , it is simplified and I think only for education purposes. I am asked to make …

IF we send a huge different type of data(image,videos and music) for example through a network it will physically represented as bits 10101010 the question is how the device that will receive the data will know the bits that represent each type or lets say how it will decrypt that

why is the realibity of analog computer low ??

Hi I need you recommendation to know about which crypto algorithm is good for protecting files which is stored in the DropBox?

Please I need some ideas for a HCI paper I am currently working on, I am not asking for the answer but just general ideas that I can work on and further improve on my own. The topic is: Crossing: Appropriating Technologies for New Cultures • enabling people from different …

Hi everybody im a little bit confused about how routers (ethernet and wireless) and data cables such as RJ45 could handle and manage the huge data and requests at same time thank u for answering ^^ !

Hi I have found several articles on the web about data compression and encoding. My interest in learning this is to decompress, compressed data in files such as PDF etc which are encoded in one way or another. I'm probably asking the wrong question here. I'm wondering how someone goes …

Hi there everybody. I hope you are all well. I have a question about planning and designing computer programs. Can someone tell me how someone going about a large program would go about this. There would be allot of classes, functions, modules etc. I want to learn how to do …

Hello there everybody.. I am just trying to understand something in relation to bitshift operations. With reference to the small program below. I have tried to keep this as simple as possible. I understand that by doing this (integer << x), a temporary variable is formed to contain the result …

Hello people from Daniweb, nice to meet you! I am a student and registered today, but I am familiar with these type of sites. Now to the point of this post. As I stated I am student, and have an assignment for my AI discipline.(Because of some circumstances i was …

please i intend to learn and study CS by my-self my goal is to be able to do reverse-engeneering,bug analysis and pentesting but i think that coding only doesnt gonna lead me anywhere so i wanna know whats the knowledges should i learn beside programming languages ?? thnx in advance

Ok so I have an Algorithim Verification assignment I need helpfiguring out this is my first time to daniweb and I have heard nothing but great feedback from my peers! I have to have in by Friday 12/5 Answer the following questions about the information in Appendix J: o What …

Hello, There is a question which I don't really quite understand. Can someone explain the answer to me? I get the first part: the declaration of the "function" however the rest of it I am quite confused. Variables do not need to be declared for this type of exercise. Insert …

with the aid of diagram write short note on 8086 motherboard

My organisation is about to deploy 500+ Raspberry Pi's(running Debian) across the country. I have been given the task of configuring these devices. Configuration depends on specific installation, so cannot be configured before installation and the staff at the remote site seriously lack skills. BTW These remote sites are all …

I was thinking about a question I asked last week that someone answered very well. The person said that no program can interface with the hardware in the same was as the OS. That statement prompted another question and what better place to ask it than here, right? Well how …

Hello, I have been trying to make a logical expression that would give me a certain output(Y) from the given inputs(ABCD). The directions are not specific in how I get the output just that I do not simplify the logical expression A B C D Y 0 0 0 0 …

Is there any NET qualified person(Computer Science) who can give me some guidance about the important subjects for exam point of view.What should be the approach for it(NET)?

the problem is about coin change - "how many ways you can change 3,5,10 dollars if you have 5c,10c ...... "http://uva.onlinejudge.org/index.php?option=com_onlinejudge&Itemid=8&page=show_problem&problem=83 the problem is solved many times on various blogs( solution [here](http://jijingshanlin.blogspot.ca/2012/07/147-dollars.html) ) In dp, the hardest thing is to understand the relation between subproblems and get the formula(optimal substructure) …

Many site can ask you to make an account in order to get more services etc. Most of the time a password is asked also. I understand there is a need to make a password of a certain length, say at least 6 chars or longer. What I don't understand …

I am new to programming and I am having a problem grasping the concept of looping an array. How do I go about doing this?

I am a computer science student and i have to do a miniproject using only c.my project title is "to estimate time complexity of a given algorithm/program code.please tell me how can i initiate that i tried counter,line count it couldn't help,i have to submit my project at the first …

I took a UIL test this weekend, and I don't understand this problem: What is output by //2 in the code to the right? The answer is 540,280, but I'd like to know why. int ct1 = 0; int ct2 = 1; for(int i=0; i<1040;i++){ for(int j=i; j<0; j--){ ct1++; …

Hello everybody. I have a question related to database design: I am trying to make a database for my translation mini-company. I have two entities: translators and proofreaders. The problem is that some of our translators double as proofreaders, that is, they can work in both areas. The question is, …

i've recently engaged in an argument with my dad about CDs and DVDs vs memory sticks and i basically stated that since nowadays it is common for almost everyone to have at least a 16GB stick, CDs and DVDs are basically becoming useless/non-convenient. he countered me stating that CDs have …

At the moment I am trying to decide which book to buy, there are many that I think would be very interesting, but some are most likely beyond me. The books in my list, along with my thoughts on them are: Concrete Mathematics (I believe this is probably too advanced …

max <- 0 for(i in 1:1000){ x1 <- runif(1:10, 1) x2 <- runif(1:10, 1) x3 <- runif(1:10, 1) z <- (exp(x1)+x2)^2 + (3(1-x3)^2) if(z > max) max <- z } print(max) This has to print maximum number between 1 to 10000 and 'z' is the formula. I am getting error …

Hello daniweb community i'm new here and glad to join this amazing website. Well want I need to understand is how I learn to become a competent computer science major and learn to write code very well. I have always had a knack for this and I love it alot …

so... whats up with the x86 thing for 32 bit if 64 bit is x64? sorry for being so brief, im on a cell phone.

Hi, Next year i would like to study Computer Science at college and then go on to study it further in university or a releated topic. Knowing this and how hard it can be, i would like to do perparation for it so that when i come round to studying …

I am new into the computer Science..I just completed reading and understing the C programming language..I think am quite decent in it..Now I want to start studying a new programming language this semester, before I start, I want to get some advice from the experts, should I choose Java or …

I really couldn't see what area of the forum to post this in so this is where I thought it might best go. MODs, move it to the appropriate forum area if there is a better place for it please. Was watching Wire Shark processing my LAN card while I'm …

hi there guyz,,, i need a suggestion/advise of what are possible easy thesis project for a comsci... ...are there possible thesis proj. that is Android(.apk) based like screen lock etc... ....hoping your advise,, 8)

All, Anyone have any suggestions for completing the last line below: public/private define a variable's scope. int/char/double define a variable's type. static/non-static define a variable's ____________. I know what static variables are, I just can't think of a word or even 2 words to fill in the blank. (I'm building …

I am doing a math research on mathematcians. I searched up Lady Ada Lovelace on wikipedia and many other websites and all it says is, "Lady Ada Lovelace made the first computer" If you know nything about her contributing to math please respond. Please help if you can Thanks

Would I create "more" randomness if if I had the library random function selecting randomly a value from the logistic function,with initial values showing chaotic behaviour, which I then would use as a seed to the random function provided by the library? Phew, whole mouthfull I guess . . . …

Some people will say that modern languages are the reason behind the production of generations of "inferior" programmers of late. Because they provide a lot of things in hand, people tend not to delve into the basics and learn the insides... Do you agree, or disagree? Please share your views …

hello, Iv recently been working on a compiler, so far i have a fairly decent working lexical analyzer and token scanner. So i can break down the code into a series of tokens and analyze them for correct strucutre. I also understand how to generate x86 instructions. However im lost …

What exactly does it mean when an algorithm has a run time of Omega(nlgn) or Theta(n^2), etc. From what I can tell, Big O is used to show the worst case(?) while Omega is best(?) and Theta is either(in between O and Omega?. I'm having a hard time understanding this …

What should i specialize in ( Network admistrator Vs database administrator)?

I am having a hard time applying Little's Law to two subsystems. A system is comprised of 100 smaller systems. 50 of these have a customer arrival rate of 10 per second and a expected delay time of 5 seconds. The other 50 have a customer arrival rate of 20 …

In the graphic representation of Hoare's parititon: http://i.imgur.com/OtMaNsn.png Why does 'j' decrement by 1 when 'i' reaches 6? Since A[j] <= pivot and A[i] >= pivot at that point, shouldn't A[i] swap with A[j]? I am a bit confused about this part. The pseudo code I am following is this: …

how to develop a gannt chart like this , i mean same like this, having time slices in bottom, like in the attached image. 

I want to delete the contents from cell if the content of that cell are similar to the content of the previous cell of last column. i.e If the 10th cell of column 'A' & 10th cell of column 'B' have the identical content then I need to clear that …