Software Development Forum

Am I freeing and declaring this 2d array correctly? int **ratings; ratings = (int**)malloc(sizeof(int *) * (numCouples*2)); for(i=0; i<numCouples*2*numCouples;i++) ratings[i] = (int*)malloc(sizeof(int) * numCouples); //Data is read into each array position for(i=0; i<numCouples*2;i++) for(j=0;j<numCouples;j++){ fscanf(ifp, "%d", &ratings[i][j]); //printf("%d",ratings[i][j]); } for(i=0;i<(numCouples*2);i++) free(ratings[i]); free(ratings); Thanks Drew

Hi their, I am learning C and a bit stuck on pointer to strings(I now they dont really exist in c but yeah) which i saw in the absolute guide to c programmig book. I am wondering why this code below doesnt work? If you could answer this question it …

Hi, I need a program to search all lines of a file (a whole file) for a certain string. In my concrete case, I need it for login. Let me sum all of this up, so you get the whole overall point of what I have so far: - a …

I'm trying to access the pixel colors from a image file but can't seem to get it to work properly, my program is only accessing the pixel colors from my active window. I've been stuck on this for a few days and would really appreciate any help. I'm guessing i …

hi everyone, I am trying to initialize array in main method, and insert value in array in another method named "popArr()", in last print array in "printArr()" method. But its not working and i am getting errors. The environment i am using borland c++. The code is as follows. #include …

Hi all, ok so i want to make a programme to speed up the internet, may be someting like [idm](http://www.internetdownloadmanager.com/). I googled but all i could find was download managers, nothing related to boost up the downloads or something.. I am looking for a c# solution. I am not expecting …

i want to send large files,,,,,this program only send upto size:1024*1024 ,,,,plz help me out!! client- import java.net.*; import java.io.*; import java.awt.*; import java.awt.event.*; import javax.swing.*; class ftpclient extends JFrame implements ActionListener { JButton b1,b2; JTextField t1; ftpclient() { b1 =new JButton("Select File"); b2 = new JButton("Send File to Server"); …

i have set combobox displaymember and valuemember. now i want to store id in DB instead of fieldname , how?

I have designed a sender-reciever type program where the sender sends a file and the reciever recieves it automatically. The problem is that though I am using byte-based streams,the output in ceratin cases as follows are getting distorted: [A]: Bitmap images are getting color-inverted. [B]: Files other than text files …

I am working on a math problem generator and for the current context I'm trying to check if both of the boxes are unchecked, a user can choose 1 or both of the check boxes but I want to display an error stating that at least 1 must be chosen …

Hi guys, how to get textbox leave event in wpf. I want select next textbox when one textbox leave focus. How to use lostfocus event?

i am having real issues trying to build a sql string Dim SelectQry = "SELECT * FROM TblSupplierQuotes where TenderNo='" & Me.txtTenderRef.Text & "' AND KMBPartNo=" & " " & Me.lbKMBPartNo.Text & " " in SQL the TenderNo is varchar(50) = L003141T75-2012JANTEN KMBPartNO is text = 442 019 115 1 …

Here is the code first: People.cpp #include "People.h" #include "Birthday.h" #include<string> #include<iostream> using namespace std; People::People(string x, Birthday bo) : name(x), birth(bo) { } void People::People() { cout << name << "was born on" << birth.printDate(); } People.h #ifndef PEOPLE_H #define PEOPLE_H #include<string> #include "Birthday.h" class People { public: People(string …

How i take a line string input through keyboard ?. Example : I am a student .

What does += mean in perl?

Help me plz #include <stdio.h> int main ( int argc, char *argv[] ) { if ( argc != 2 ) { printf( "usage: %s filename", argv[0] ); } else { FILE *file = fopen( argv[1], "r" ); if ( file == 0 ) { printf( "Could not open file\n" ); …

Hello all, I am using Windows server 2008 OS as domain controller. When user's request comes, his id & password are verified across Active directory. If his id & password are already present in active directory then java program returns as valid user or otherwise returns as invalid user. Now, …

hello, i am creating client server module.i want username and password from active directory for authentication. first time when i run program it it authenticate users but when i delete user & change password policy after that created new user and run the program then i got error authentication error. …

Hello, I need your help with something (again): I need to control two text widgets with one scrollbar and, thanks to this website, I found some code to do it using listboxes (here: [url]http://www.daniweb.com/forums/post940371.html#post940371[/url]). I modified it, and it now works with text widgets and pyton 2.x. The problem is: …

I’m trying to produce this equation in VB.NET h = (sh * s + (dia / 2 (tan(ang))) + ((dia / 2 (tan(ang1))) / 3)) This is where I’d prefer to retrieve the data from. Sh = sheet height = 1 (can be variable)(data retrieved from textbox) S = sheets …

Hi, # Problem and Background # I'm trying to compile a program that uses some legacy c code generated using the f2c translator (*version of May 1991 13:06:06*). *decide.c* is the source that contains the translated fortran to c code and *f2c.c* is the header file. Durring compilation I get …

Hi Everyone I have a listbox that calculates interest rates the code is as follows:- dim amount as double = val(textbox2.text) dim counter as integer for counter = 1 to 10 listbox1.items.add(counter & " % " & formatcurrency((amount*counter)/100)) next counter This works great but i would like to use a …

Dear friends: i have a data file, the structure of the file is as follows: // data.txt $Elements 1 1 2.5 2 2 1.0 2.0 3 2 3.0 4.0 4 4 1.0 3.2 2.7 1.6 $EndElements In the data.txt, the fisrt column is the row number, and the second column …

I know this is a dumb question, but I must be missing something simple and just can't figure it out. My program has a logfile to track things done with it. I'm trying to figure out what I am missing with creating the file if it does not exist. Am …

Hello all programmers .... need some tips which i have some issue down here... I got test the (sql1) and then the result for the records is zero (0) ...when it's run for "check manager gender" , the error appears... give me some help and i will owe u guyz …

Hi, Can i ask some help what is the best editor to use in learning C language.... By the way which is which language, should or i must to learn C or C++ ?. Thank you in advance.

I want to make a simulation of logic circuits using basic logic gates in C.User will determine the types of inputs, and the gates.I want to design the circuit as a result.And simulation that produces output according to input values​​.But I can't do connections between gates.Can you give me advice …

I have databse in access 2007. my date datatype is Date/Time. I have made function to insert values to database. But it is showingd syntax error(missing operation)..." for insering date. Please help me how should i do i have tried hash in front of date and tried to save with …

>I need to take a list of files and remove a '.2' from a line in each file. I then need to rewrite the file without the '.2'. Using the code below I am >able to take a single file and do exactly what i need to but when trying …

ok im from C++ but no starting java this is my attempt of the password protect program which you get three try at but for some reason it dosnt compile it just gets errors import java.util.Scanner; public class password { public static void main(String args[]){ Scanner input = new Scanner(System.in); …

I have a csv file i am submitting to database directly. I have tried many means but still not able to bulk copy into the database table. I have suggestions from people. All suggestions are welcome.

how the compiler searchs for a file when we write fopen("filename","r"); please draw the flowchart of the whole process

#include<stdio.h> #include<conio.h> #include<string.h> struct person { char name[10]; int rno; }; typedef struct person NAME; NAME stud[10], temp[10]; void main() { int no,i; void sort(int N); clrscr(); fflush(stdin); printf("Enter the number of students in the list\n"); scanf("%d",&no); for(i = 0; i < no; i++) { printf("\nEnter the name of person …

I did a page for adding and viewing activities in a project. The table linked with that page has an UNIQUE constraint for the activity code. As a result of which when i add a new activity with existing Activity code, it is not accepted and gives a runtime error …

I'm getting an error that I don't understand. It's a Null Pointer Exception, but neither of my arguments in line 118 is null. According to the documentation, ImageIO.write will throw a IllegalArgumentException or an IOException, but it isn't throwing either. I'm not sure what could be null here. You can …

I'm C newbie and i'm having a tough time with my first assignment :sad: The assignment is on creating a Number Puzzle.....apparently it's the newest craze in Toronto and my prof is a big fan....unfortunately I'm trying to read in a file which looks like this: 9,8, ,5,,4,, 7,3,1, ,5 …

how can i make an array inside by a function????? so that the value i will input will change.... I am using Borland C++..... how can i start it???? 1. [SOLO] Write a program that uses a two-dimensional array to store the highest and lowest temperatures for each month of …

This program ask user which arithmetic operation they want to play with then generates a random equation and lets the user answer it. When the user stop playing the game the program calculates the number of correct and answers and wrong answers. I need some help because the program crashes …

hi, guys here is my question:- I've created an application for opening text files. there i got two forms.one contains the textbox where the contents of the file will be displayed. there is a button.clicking this will move me to another form which is displaying modally.in the second form i …

i am using html agility pack to retrieve the articles from website with "p" tag, but it return all the user comments along with it. how to overcome one this. i have only one string holding all the stuff at last.

Actually i'm planning to make a user registration page over swings and i decided that there should be a constraint that people with age below 21 cannot register. I want to make a validation of the date input of the user by calcualting the age and checking with if loop. …

I am doing system using window phone 7 and sql server as database. I am using below coding to get shopping cart list at listbox. public List<Order> FindOrder(string custemail, string orderstatus) { var findorder = from r in order.Orders where (r.CustEmail == custemail && r.OrderStatus == orderstatus ) select r; …

Hi, I have several classes for different types of shapes (line, rectangle..etc) which all implements interface IDraw. And then I have a List<IDraw> called shapes which I want to Serialize/Deserialize. I think I got the Serialization right: [CODE] private void saveToolStripMenuItem_Click(object sender, EventArgs e) { saveFileDialog1 = new SaveFileDialog(); saveFileDialog1.InitialDirectory …

when i do... [ICODE]String menu; Scanner keyboard = new Scanner(System.in); menu = keyboard; if (menu = "D"){ .... }[/ICODE] there is error sign under "menu = "D"" <can't convert String to boolean> why menu is boolean? I stated in String....

#include<conio.h> #include<stdio.h> #include<ctype.h> #include<string.h> int precedence(char c) { switch(c) { case '*': case '/': return(2); case '+': case '-': return(0); } } char *to_postfix(char *infix) { char stack[30],postfix[30]; int i=0,j=0,top=-1; while(infix[i]!=NULL) { if(isalpha(infix[i])||isdigit(infix[i])) { postfix[j++]=infix[i++]; } else if(infix[i]=='(') { stack[++top]=infix[i++]; } else if(infix[i]==')') { while(stack[top]!='(') { postfix[j++]=stack[top--]; } top--; i++; …

why can't we take an array :- a[10000000]?? what is the alternative?

How to maintain Zeros in incremented values ex: ECJ-00001 any help willb appreciated this is how I am icrementing Dim Separ As String() = fullString.Split("-") Dim StrPart As String = String.Format(Separ(0), "ABC", System.String.Format("SIM")) Dim intPart As Integer = Convert.ToInt32(Separ(1)) Dim Novonumero As String = String.Empty Novonumero = String.Format("{0}-{1}", Separ(0), System.Threading.Interlocked.Increment(intPart), …

Hello everybody. I want to make sure about something: If I install ActivePython 3.2 as root on Linux, will it delete the distro's default Python (2.6)? I also installed Python 3.1 a long time ago, so I have Distro's Python 2.6, the official Python 3.1 and want to add this …

I'm new to complex maths and equations in vb, even the basic maths below does not work correctly. So can any one advise on the best data for for me to use e.g. below decimal for math calcs Help me put the below correct. Private Sub z() Dim ringheight As …

Hello again. Here are the details: * My litle scripts work perfectly in my virtual Windows XP (I'm using virtualbox if that matters) as long as they are non-compiled .py or .pyw files * After compiling them, I double click on them and a DOS window comes out, then dissapears …