Software Development Forum

The following code when compiled gives the error: "i[B]nvalid conversion from `void*' to `f*' "[/B] What is wrong with it ? [CODE] typedef struct a { int* value; struct a* p; int r; }f; f* m(int* value) { f* node = malloc(sizeof(f)); node->value = value; node->p = NULL; node->r = …

Hi! Does anybody know how to write a Pascal app that would remove blank lines from a text file. function RemoveBlankLines(OldFile: string): string; var fi,fo: Text; s,NewFile: string; n: integer; begin result:=EmptyStr; if FileExists(OldFile) then begin //rename old file .bak, n:=Length(OldFile); while (n>1) and (OldFile[n]<>'.') do Dec(n); n:=Length(OldFile)-n; NewFile:=Copy(OldFile,1,Length(OldFile)-n)+'bak'; RenameFile(OldFile,NewFile); …

i have this code: [code] int main(int argc, char* argv[]) { remove(debug_file); count=0;//count d number of seeding for (int i = 1; i < argc; i++) { /* Check for a switch (leading "-") */ if (argv[i][0] == '-') { /* Use the next character to decide what to do. …

Hi guys.. Im still working on my project, it is a payment and enrollment system. Ive been thinking what to do with the Student ID since it requires a format like xx-xxxx, its possible that ill make two fields right? i mean the first xx on xx-xxxx to make it …

Hi guys o/ ! I'm trying to make a program that write in text file some datas. Then, i wrote a header that have all functions I need to write in this file. thas is my header: [CODE] #ifndef _SNAPSHOT_H #define _SNAPSHOT_H #define LAST_PRICE 0; #define BEST_ASK 1; #define BEST_BID …

Hi, so I've been programming with Python (2.x) for a while now, and I was wondering about what people thought of 3.x. From just a few quick searches, some people recommend that people get used to it quickly as it is the future, and others say to just stay with …

My problem is that when i run the program i ask the user to select a month from a menu then input a year. I then calulate the first day and janaury for that year. Then i have to find the first day of the month the user selected but …

hi everyone, im having a hard time with my loop, what i want to do is to print f1, f2, f2,f2... till it finishes to read, then f1, f2, f2... , whats happening to my output is f1,f2, f2..., then f1, f1 till end, i want to ask, how will …

I'm trying to write a program for class and I can't get my fractional exponent to work. I've tried using 2/3 2.0/3.0 and I've tried entering 2/3 into a separate variable, but nothing seems to work. I don't get any errors while building 2/3 but the logic does not come …

What's Up? OK, So this has been driving me crazy over the last few weeks, All I need to do is edit a file so that it runs without showing any windows (I.E Runs in background) The window is created by means of Delphi, (So WS_EX_TOOLWINDOW Won't work) The only …

Hi :) I was hoping someone could point me in the right direction to create a grid of clickable objects/images/shapes. My problem is this, I have to create a grid of 100+ characters that, when you click on one, appends a JTextArea with a specific, different, character. The only idea …

Hello, i've been learning java for a few months now, but i woulld also like to try c++. I tried rewriting one of my exercises in c++, but i cant seem to get objects working. These lines all prodduce errors. Cylinder outer(5,5); Cylinder inner(4,4); cout << "\n" << outer.volume() << …

Considering no one seems to be-able to answer my other thread I'll try simplifying this one. I have created GUI frame which contains a menubar at the top. I have several methods as well as a method which paints 5 circles onto the frame. When I call that method, by …

Okay, this might become a monstous post, and I apologize for that. I recently switched from programming Java to C++ like a week ago, and can't seem to get all the pointers right it seems. Maybe all code provided in this post might seem a little overkill for the size …

Hi, I am new to Python. I have written a routine and am trying to compile the code for distribution. I went to [URL="http://sourceforge.net/projects/py2exe/files/"]http://sourceforge.net/projects/py2exe/files/[/URL] and downloaded the file py2exe-0.6.9.win32-py2.6.exe. I am running Python 2.6 on a Win-XP Pro OS. I assume this file is a self-extracting exe. The trouble is …

Is it possible to have a function run at the beginning of every function of a class without explicitly writing it? I'm going to have a class with 20 or so methods, and though I can just copy and paste, I was wondering if there was an easier way to …

Hello, I have a huge file with the following kind of lines: A,B,C 1,2,3 D,E 4,5 What is efficient way to split and get the following output using python? A 1 B 1 C 1 A 2 B 2 C 2 A 3 B 3 C 3 D 4 D …

Im getting errors with this, please advice me on what to do: [CODE]def displayHappy(): numLimit = input("Enter a positive integer: ") countHappy = 0 countUnhappy = 0 liHappy = [] for num in range(1, numLimit + 1): inNum = num while inNum != 1 and inNum != 4: inNum = …

How can i move the Rectangle on the form and animate it as it moves? If i want to move it for example to the right, i must increase it's X cordinate, right? I did it (++x) and drawed a new rectangle and overdrawed the old one with background color. …

Hi there I am translating PERL code into python and i am new on both language.I have one question if we have hash key reference in PERL like this way $a->{b} how we can traslate it into PYTHON? and if we have this code $a->{$b} , how we translate it …

[CODE]#include <stdio.h> #include <stdlib.h> #include <string.h> #define TRUE 1 #define FALSE 0 #define BUFFER_LEN 240 #define NUM_P 50 void str_sort (char *[], int); int main () { char *s[NUM_P]; int count; printf("Enter the number of count:"); scanf("%d",&count); int i = 0; printf("enter the first string:"); scanf("%s",&s[0]); printf("enter the second string:"); …

So I have looked and looked and wasn't able to find how to retrieve text from a selected option in a combobox. I have just started visual c++ so I don't really understand a lot. But I used to work with Visual C# before. So, is there any way? [CODE]if(comboboxslectedvaluethingy …

I have no idea whats wrong here, i am fairly new to java.. heres my code.... [CODE] private JPanel pnlLogin, pnlFinalLogin,pnlUser, pnlPass = new JPanel(new BorderLayout()); btnLogin = new JButton("Login"); lblUser = new JLabel("Username:"); lblPass = new JLabel("Password:"); pnlUser.add(lblUser, BorderLayout.WEST); //pnlUser.add(txtUser); pnlPass.add(lblPass, BorderLayout.WEST); //pnlPass.add(txtPass); pnlLogin.add(pnlUser, BorderLayout.WEST); pnlLogin.add(pnlPass, BorderLayout.CENTER); pnlLogin.add(btnLogin, BorderLayout.EAST); …

i'm newby to C++. Small code as follows: [code] int main(int argc, char* argv[]) { cout << "function main() .." << '\n'; char ch1; int int1; cin >> ch1; cin >> int1; cout << ch1 << '\n'; cout << int1 << '\n'; return 0; } [/code] when i run the …

I have an eclipse application from which i trigger an Swing widget.On click of a button on the SWT composite a window pops out which contains the Swing Table. Now i want a button on this Swing page to show up an eclipse workbench window. Any idea on how I …

Hello, I'm new to programming forums so go easy on me :) I'm working on an assignment for school. I have to read a quiz.dat file which cotains info in the format of: TTTTTFFFFFTTTTT TTTTTFFFFF TTTTJoe Jones TTTTTFFFFFT TTFMary Jane ... ... etc. The first line being the answer key …

Can someone please tell me why I might be getting a access violation when doing the following for a double linked list: [CODE=C++] ~DLList() { while(!isEmpty()) //isEmpty is working.. removeHead(); } bool isEmpty() { if(head == NULL && tail == NULL) return true; else return false; } char * removeHead() …

ok so i am trying to do a little phone book. i have a class that has information on the individual, the main would read from a file of individuals and ask if the user wants to add or remove , and the last one is array of individuals..here is …

So guys for the sake of simplicity lets say i am developing a huge matrix multiplication program using C and i made a data structure which is able to represent this huge matrix into miniature blocks the down side is that this representation of block takes much more memory than …

I'm making a game as my project in school. I'm having a problem regarding double buffering, im trying to draw an image (drawImage(,,,,)) into the double buffered image, I can't seem to make it work help please =D [CODE] public void render() { if(doubleBufferImage==null){ doubleBufferImage = createImage(PANEL_WIDTH,PANEL_HEIGHT); // Set Size …

[CODE] private void testFunc() { int[] arrayParam = new int[88]; arrayParam[2] = 67; calledFunc(arrayParam); Console.WriteLine("testFunc Done"); } private void calledFunc(int[] intArray) { Console.WriteLine(intArray[2]); //if new array declared, values not changed in testFunc intArray = new int[66]; intArray[2] = 33; intArray[5] = 55; } [/CODE] If calledFunc simply changes array values, …

hi, here is my code having return method that working correctly when i print it from inside of the method, but if i call from main method its shows only one output instead all results.. [CODE]public class SearchCompare{ .... public String process(){ String showResult=null; ... .. for (String found: names.keySet()) …

Sir, I am using the following code in my vb.net while using that code it will show me syntax error. [CODE]Private Sub updateinfo() Dim con As OleDbConnection Dim cmd As OleDbCommand Try con = New OleDbConnection(connectionString) cmd = New OleDbCommand("UPDATE [Lani] SET [First Name] = '" & txtfirst.Text & "', …

Will the new WPF 4 support multi-touch development on the HP TouchSmart computers? I know there is HP TouchSmart Developer kit, but it doesn't support the express editions of Visual Studio, and Visual Studio is kind of pricey.

I posted a snippet about using a microcontroller as a mouse, and it works great, but it moves the mouse as a stepper motion. How would I go about making it velocity driven? Like when I tilt the accelerometer further, the faster the mouse moves. I've seen it on youtube, …

In trying:[CODE]string var1 = Something"; Console.WriteLine("{0} ... \{", var1);[/CODE] to get: Something ...{ I get an error: Unrecognized escape sequence. Without the backslash I get an error: Input string was not in a correct format. Using "{0} ... \x7B" doesn't work: Input string was not in a correct format. (\x78 …

When I try to compile this: [code=C++] //Player Class Definitions #include <iostream> #include "player.h" using namespace std; player::player() { health = 100; level = 1; potions = 10; enemiesDefeated = 0; } int player::attack(int *enemyHealth) { srand(time(NULL)); int randomNumber = rand() % 100; *enemyHealth = *enemyHealth - randomNumber; } int …

Hello, What I am trying to do is edit the variable of a class through a separate class function. I have tried to do things like [code=C++] int player::attack(int *enemy) { srand(time(NULL)); int randomNumber = rand() % 100; *consolePlayer.health = *consolePlayer.health - randomNumber; } [/code] and I get the error …

delete this, solved, had to do with how a variable was declared

I have three files: main.cpp [CODE]#include "CMain.h" int WINAPI WinMain(HINSTANCE hIn...) { return 0; }[/CODE] CMain.cpp [CODE]#include "CMain.h" using namespace Program; LRESULT CALLBACK WndProc(HWND hwnd, UINT msg, WPARAM wParam, LPARAM lParam) { switch(msg) { case WM_DESTROY: PostQuitMessage(0); break; default: return DefWindowProc(hwnd, msg, wParam, lParam); } return 0; } CMain::CMain(void) { …

Hello I'm creating a game engine. In order to draw everything correctly I need to sort a vector (vector<game_object*>) by each contents z value I miserably failed to do it with std's sort() so Id like to know what's the most efficient way I could sort this vector [If its …

[URL="http://i41.tinypic.com/n2ef5k.jpg"]Screenshot.[/URL] Hello, I have a problem already for like a week and I seriously can't get out of it. Take a look at the screen shot. The server sends a packet to the client to spawn an NPC. If you look to the top commandline-window, the client does recv the …

So I have the following implementation of linked list: [CODE=c] #ifndef LINKED_LIST #define LINKED_LIST struct Student { char* name; char* surrname; char* signin_number; char* grade; char* date; struct Student* next; }; struct Student* begin = NULL; void push_back(struct Student* student) { struct Student* temp = NULL; if(begin == NULL) { …

#include <iostream> using namespace std; int main() { int list[12] = {8,1,11,4,2,9,10,5,3,12,6,7}; cout<<list; return 0; } I run the above code and get this: 0x22fef0Press any key to continue . . . Please help!!! New with C and new with Dev-C++ which my University wants us to use... Running from …

Hello. I am creating a template class derived from another template class to basically mimic the behavior of the STL stack for a school project. I am getting a compile time error when try to use a variable named "copy" when testing the overloaded '=' (defined in the base class) …

I'll do my best to be as clear as possible about what I'm trying to do. In short, I'd like to know if a switch statement can check multiple variables simultaneously (I have a feeling it can't, but I'd like to confirm). If it can't, can someone recommend a way …

hi everyone, i'm new in c#, so i have some questions: i have this piece of code: [code=c#]Graphics gfx = this.CreateGraphics(); Pen myPen = new Pen(Color.Azure, 1.0f); Rectangle myRec = new Rectangle(10, 10, 30, 30); gfx.DrawRectangle(myPen, myRec);[/code] and i want the rectangle myRec appear on the form1 when i press …

Does anybody know of any libraries or scripts or even code snippets that can generate HTML code from a diff or comparison of the contents of two files? I know of the HtmlDiff class in difflib, but the format it outputs is not the one I want (it puts both …

I'm trying to declare a vector as a global variable, and am getting a linker error. I read up on linker problems with multi-file projects, pretty sure I've included the proper headers, used extern, and #ifdef properly, but I can't get it yet. Here is what we have: [CODE] //in …

hi i have a problem with datagridview. I have about 5 datagridviews displaying different items. Now my issue is that how will i know which datagridview the user selected and add from that datagridview only? at the moment the user can add from different datagridviews because the first row of …