51,593 Topics
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| | Hi guys, I am stuck with this piece of code for a long time. The errors that come are: bfs.cc: In function 'void greedyMatch()': bfs.cc:9: error: expected initializer before '*' token The relevant code is [code=c] #define forallXNodes(u,G) \ for(arc *bfs_ee=(G.getSource())->firstOutArc(),arc *bfs_stopA=(G.getSource())->lastOutArc(),u=bfs_ee->head(); bfs_ee <= bfs_stopA;u = (++bfs_ee)->head()) #define forallYNodes(u,G) \ … |
 | Hi again, After a defeat in Linux in other post (which I'm still finding a way), I have decided to give a shot in windows. However it produces DLL fine and I can use LoadLibrary(). I need it to produce .a file for static linking. How do i do it? … |
| | Hey, I have just switched from C#, and in C# there was a way you could create an item (Example), and set parameters. [CODE] Example text = new Example(); Example.parameter = value; //etc [/CODE] I have searched the internet, and could not make any sense of it. Any help would …  |
| | I'm trying to convert a disassembled Hex Dump to a SPIM friendly assembly file. This requires that I take lines like: [CODE] 004000f8 <_init>: 4000f8: 27bdffe8 addiu sp,sp,-24 4000fc: afbf0010 sw ra,16(sp) 400100: 0c100064 jal 400190 <call_gmon_start> 400104: 00000000 nop 400108: 0c100094 jal 400250 <frame_dummy> ... [/CODE] and make them: …  |
| | Is there a good way to determine the end of a a line in a text file? I need to find of end of a line in text because all text lines are of different length. I also have to store each word (separated by spaces) into a vector. [CODE] … |
| | A question has been knocking my mind today,is it possible to convert a executable file back to its source code in c++?? |
| | Hi everyone, Somewhere in my need i need to create strings like ( x,y,z ) with 0<x,y,z<N. I was trying to use 3 for loops but it didn't work. That's what i wrote: for(int i=0;i<N;i++){ for(int j=0;j<N;j++){ for(int k=0;k<N;k++){ string t="( "; t+=i; t+=","; t+=j; t+=","; t+=k; t+=" )"; } … |
| | hi! i have a class from which other classes are inhertited. I then create a function GetInput() & I want it to funtion for evry object inherited by MAIN. I don't want to create separate functions for each. Is there any way for it? Thank you. |
| | i have a Header file that i will be using for multiple programs. this file specifies integers (its for my calculator programs). is it possible to have an integer value represented as AB if the two other integers are represented as A & B without getting a compiling error? EX. … |
| | How can write out rep sign (\) ? cout << "???"; |
| | This problem originates from a job interview which could be solved in C++ or C#. As far as I can remember it was to implement a queue that can be added to by multiple threads and accessed by multiple threads. I haven't tried it in C# yet although I think …  |
| | i have in the Visual C# 3 options of database : 1. SQL SERVER (.sdf) 2. ACCESS (.mdf) 3. ADO.NET (.edmx) which database advisable to use??? *if you give me answer please give me tutorial\book\name of book. thanks.  |
| | I'm working on a problem where I am trying to validate the user input to verify only digits have been used. I'm trying to use the ASCII code to do so, but I'm stuck. I would greatly appreciate any help that can be provided. Thank you in advance!!! *Delilah* [CODE]#include …  |
| | I downloaded OpenCV last Wednesday and tried to link it with DevC++ I followed the instructions found [URL="http://www.cypax.net/tutorials/opencv/index?language=en"]here[/URL] and I get the error cannot find -lhighgui ld returned 1 exit status I'm sure the code that I tried to compile is working because I previously compiled and ran that code … |
| | code not working [code=c++] #include<iostream> using namespace std; typedef struct node{ int data; struct node *next; struct node *previous; }mynode; mynode *head,*temp,*current,*tail; void add(int data); int main() { head=NULL; tail=NULL; add(1); cout<<"added 1"<<endl; add(2); add(3); add(4); } void add(int data) { temp=(mynode*)malloc(sizeof(mynode)); temp->next=NULL; temp->previous=NULL; if(head == NULL) { head=temp; tail … |
| | Hello I just started programming and managed to make some programs, but what I don't get is when I get these errors: Compiler: Default compiler Executing gcc.exe... gcc.exe "D:\Documents and Settings\Riikard\Desktop\Untitled1.c" -o "D:\Documents and Settings\Riikard\Desktop\Untitled1.exe" -g3 -I"C:\Dev-Cpp\include" -L"C:\Dev-Cpp\lib" -g3 D:\Documents and Settings\Riikard\Desktop\Untitled1.c:1:20: iostream: No such file or directory D:\Documents and … |
| | Hello every body I made a small prog. to click mouse , but when i tried to make it parallel using mpi it doesn't work can any body lead me where is the error [CODE]#include "mpi.h" #include <windows.h> #include <iostream> using namespace std; int main(int argc, char *argv[]) { int … |
| | I have met a proplem in correcting the following file and please submit to me by correcting the errores and if you can please help me in sorting and updating this file #include <iostream> #include<fstream> #include<string.h> using namespace std; struct gum { string nam,fnam,typ_item,nam_pack,coun_cons; int tin_no,reg_no,tot_item,tot_pack; float weigh; }; void … |
| | I'm searching a text document and replacing substrings with other substrings. So for instance: "ra,16([B]sp[/B])" with "ra,16([B]$sp[/B])" The issue I'm having is that say I have the following string: "sp,sp,24" How do I re-iteratively replace "sp" with "$sp" twice without getting: "$$sp,$sp,24" This is my code: [CODE] ... if ( … |
 | I've seen that a vector can be sorted using [code] vector<double> V; vector<int> Index; V.push_back(9); V.push_back(10); V.push_back(8); Index.push_back(0); Index.push_back(1); Index.push_back(2); sort(V.begin(), V.end()); [/code] If I want to sort Index according to how V was sorted, there is an optional third parameter to sort() that will do this. I don't understand … |
| | Hello. So the most I can tell you is i'm having serious trouble with my code of writing to a txt file. It's not that my code isn't working, it's that c++ is outputting WEIRD crap that makes no logic sense, doing things out of order, and just seriously screwing … |
| | I met a problem in sorting a file containing astudents fistnane, secondname and GPA.if I sort the file using first name or lastname their Gpa will be miss placed please help me. the file is: kalayu haile 3.5 fikadu adisu 3.99 eyob assefa 3.25 getaneh allesew 3.75 fraol gezahegn 3.00 …  |
| | hi.. now i'm trying to use the openfiledialog in a gui app .. what i have done till now is that 1. open visual stdio 2008 2. select c++ project 3. select windows application project 4. drag the openfile dialog from tool box and drop it on the form .. …  |
| | My question may be funny but i want a right direction so i am posting it. I know fundamentals of c and c++ and i want to go ahead in it. I heard about windows and system programing but i am confused that app like antivirus, process explorer, anti spyware … |
| | Is it possible to write a code that prints 'its own code' when executed? Just a thought. |
 | If you're doing programs for academic reasons, this is a good site to go for C++ information. Good for snippets. Used it a lot through classes. http://www.mvhs.net/~rkrane/clecs/ |
| | Please help me how to use clrscr(); and gotoxy(); functions in other C Compilers? |
| | Hi there, The program in hand must retrieve a bunch of data from an SQL Database (currently stored in a DataTable), fiddle around with the data, and then upload the changed data to the same SQL database. Everything works fine at the mo apart from the final bit, uploading to … |
| | Hello, I am trying to send an object over a socket using C#. I originally used a memorystream and binaryformatter, but to do this I need to include a reference from program1 to program2. I don't want to have a reference, so I just want to be able to transform … |
| | Alright guys I have a question. I am trying to write a custom data type. Let me explain a little further. I'll start out at the base. te_char (you don't really have to worry about this. >char c_char >rgb color te_word (weird part) >int type (based on an enumeration >vector … |
| | Here is the code: [CODE]#include <cstdlib> #include <iostream> using namespace std; //Declare function int triangle(int num); int main() { int n; cout<<"Enter a number and press RETURN: "; cin>> n; cout<<"Function returned:"<<triangle(n)<<endl; return 0; } //define function int triangle(int n){ int i; int sum=0; for(i=1; i<=n; i++) sum=sum+i; return sum; … |
| | Hello, Ive started to programming a few days ago, I'm totally new never done it before. Ive read through the internet for some knowledge about programming. I used the program code blocks to program yesterday but I got some errors in it so I uninstalled it, it wasnt really errors … |
| | I wrote a console calculator application in Microsoft Visual C++ Express 2010 and built it as release. It runs fine on my computer but when I moved it to another it said it needed a certain .dll which was not previously, and said reinstalling the application may fix the problem, …  |
 | Hi. How can i push into the same vector types of string and integer too ? |
| | plz help meeeeeee my program include 5 people that if choise 1-wrte name people 2- ACCOUNT 3-SUPPLY account and with add 1 people choise 1-SUPPLY account 2-update of account plz i can not write plz how i write this program :'( |
| | Hi all, My cpp is rusty as all get out and I'm wondering why this doesn't seem to work. I've basically created a .cpp file with all of the structs and lower level data types in it. One of these is an enumerated type. The file. structs.cpp is as follows: … |
| | Topic title is not the best but nvm I have been looking for this on internet but cant it find anything useful. [CODE]#include <windows.h> void main() { ShellExecute(NULL, "open", "http://dreamincode.net", NULL, NULL, SW_SHOWNORMAL); }[/CODE] This is function which I have found on net to open URL, problem of this function … |
| | hi all, i tried this code, but it doesnt work, it says vector subscript out of range: (sorry, i just dont understand how to correctly post code, if someone could tell me, please?) #include <iostream> #include <vector> using namespace std; vector<int> v; v.push_back(1); v.push_back(2); if (2 < v.size() && v[2] … |
| | Here are my instructions and I think I have it done but I just realized I need to use memory mapped IO. I am reading over the book and doing research on it but just dont know how to change it and my deadline is Friday. Can someone take a … |
| | i dont know how to read from database SQL. i try this : [CODE] string sql = "Select * from Table1 "; DataSet ds = new DataSet(); string connStr = @"Data Source=.\SQLEXPRESS;AttachDbFilename=|DataDirectory|\Database.mdf;Integrated Security=True;User Instance=True"; SqlConnection conn = new SqlConnection(connStr); SqlCommand cmd = new SqlCommand(sql, conn); conn.Open(); SqlDataAdapter adapter = new …  |
| | I made a c++ program. I used cin.getline() function so I could input a string from the user. But when I run the program it does not input anything nor gives me a change to input anything instead it goes to the next statemement. For eg. this is my program … |
| | What's the difference between return (0); and return 0; |
| | I'm knew to C++ and I always seem to have a problem but all I want to do is to pass an Object to a function by reference.. Thanks in advance Oh I user boost for directories, paths and files... Also I use c strings for UserName and password as … |
| | Hi, How to get the default Web Browser location in vista & windows7 though programming. |
| | Hello. I have a little problem with using a .dll in my visual studio 2008 project. The dll is created by bjam. The guide i followed was: [URL="http://www.rasterbar.com/products/libtorrent/building.html"]http://www.rasterbar.com/products/libtorrent/building.html[/URL] There is also a vs 2008 guide but i do not know enough about visual studio to follow it. [URL="http://code.rasterbar.com/libtorrent/wiki/BuildVS2008"]http://code.rasterbar.com/libtorrent/wiki/BuildVS2008[/URL] Well i … |
| | It won't let me build my project. It's just a simple one file thing since I am just learning. When I click build or debug it prints "Launch failed. Binary not found." What do I do? EDIT: I am on a mac. |
| | I need a way to communicate with other exe's. Almost like being able to call cout but to a exe, not the output stream. Both of the apps would be in c++. I know cout is for output stream, sstream is for any stream, fstream is for files, something like … |
| | In simple terms, to write windows DLL I have to define DllMain and do switch stuffs and then export functions using __declspec(dllexport). If I'm right the question comes what about linux? I want to write it in ubuntu box and I'm stucked! How do Coding DLLs differ from .SO? Thanks! |
| | I am using Visual C++ 2010 and created a CLR EXE debug project and wrote a function, which I am able to call from main in my program. If I take the exact same code and put it in a dll, then I get a compile error from the line … |
| | Hiya Im trying to make a few efficient maths classes that will optomise using SIMD SSE or SSE2 if the target CPU supports those SIMD variants or failing to support either use a normal CPU bound c++ version. The issue im having is that i want to have for example … |
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