51,593 Topics
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| | Hi everyone, I'm working with a text file. I want to read a part of it into a string. Here is a sample: <MEAN method="jackknife">3.97e-06</MEAN> In the above line i want to put the number 3.97e-06 into a string. The code that i wrote can find the position of the … |
| | I'm trying to convert part of a string. Say I have a bunch of strings and I want to search through all of them, and whenever one of them have the string "34" contained within, I want to convert that part of the string to "XX". Imagine the following: [CODE] … |
| | Hi Guys, I need to convert a 1D array into a 2D array. Usually a easy problem but my problem is the way data is stored in the 1D array The structure of the 1D array is r0c0, r0c1, r1c0, r1c1, etc etc so for example if my 1D array …  |
| | Hi there, I'm working with a file. I want to write a code that returns a particular string located somewhere in the file. I have the starting position of the desired string and it's length so I thought that i can use substr(starting position, length of the string) but it … |
| | hello, i would say im new to c++, my most advanced program was just a simple tic tac toe application. I am interested in learning more about c++. I have searched A LOT and cant find any good ebooks or links. I need links or ebooks to go further! please …  |
| | need c++ source code using array and loops.... i got a little problem thiking of it... |
| | hello there, im new to C++ and i tried to design this code but the code is not running and i there is the code below [CODE=cpp]#include <iostream> using std::cout; using std::cin; using std::endl; #include <string> using std::string; using std::getline; class staffMember{ public : void setFirstName (string fname){ FirstName = … |
| | So, I've learned my lesson in the past. I'm not experianced enough to design a program from start to finish in an elegant way. I'm not looking for code in any way, just some code flow suggestions if anyone has any. This is what I'm trying to do: -Do a … |
| | Hi all, I was recently working on a C++ application in Xcode (free Mac developer tool) and started running into some really weird BUS errors. What happened was that the code would compile and run fine in terminal up until I initialized two new variables just like this --> … |
| | i have been given an oop project on quiz condution while using operator overloading and file handling ..plzz help:(  |
| | Hey Hi..to everybody..I am new to this C++. My problem is that I want the input and output to be taken from windows interface not from the command line. A window should open and it should ask the question to proceed and the output should appear there.Take for example: it …  |
 | how can i make a movable window in turbo C++ by using graphics.h......i mean....as i can move any picture with XOR_PUT .....can i move any editable window??? |
| | I'm trying to compile an assembly file (.asm or .s) from a c++ file to be used in SPIM. SPIM requires that the file be in MIPS32ABI and for MIPS I ISA. My g++ compiler is not working well and I was wondering if there were any compilers out there … |
| | Hi all : ) I'm coding a snake game, now the problem is to get the input from the user if I used getch(); the snake will wait until she got an input from the user, so how can I let the snake run normally and expect input in any … |
| | Help please, I wrote a script in C++ for loading a map file, parsing it with XML, and outputting the objects in the file. The XML parser works great, but it won't open the file. I have it exiting if the file doesn't exist, and the file doesn't load, even … |
| | Hi, I want to be able to copy my existing code, with all highlighting & formatting preserved to a file. Is it possible? Evan D. Knight |
| | I'm attempting to manually load the hexdump of an elf file that I compiled using g++ into a processor simulation I designed. There are 30 sections to a standard elf file and I am loading all 30 segments with their proper memory location offset taken into account. I then start … |
| | Ok, so I am having some trouble with my calculator code. The two issues I am having are: 1. I cant get my program to produce decimals, I have tried using "float" but that didn't work so i don't know how to fix that. 2. I don't know how to …  |
| | I have met a problem in Identifying the ways of updating a file in c++ |
| | I want to make program in WINApi -it is simple window with one textbox - if you will press key 'A',it jumps to textbox(like when you click on it,and then you will be able to write to it). Only thing I dont know is if in WINApi is a function … |
| | if i open a file ouput using [B]ofstream[/B] it's openmode is set to [B]ios::out[/B] and [B]ios::trunc[/B]... what I have to do, if I want to have only the ios::out flag...not the ios::trunc flag.Because, it is deleting all the previous contents. How do i undo this flag?or, what to do, if … |
| | Check out my code on Pascal's triangle using C++. [CODE]#include "stdafx.h" #include <iostream> using namespace std; int pascals(int,int); int fact(int); int main() { int r,e,levels,space; cout<<"Enter the number of lines needed";cin>>levels; space = levels+1; for(r=0;r<=levels;r++) { // std::cout.width(space);//shape for(e=0;e<r+1;e++) { cout<<pascals(r,e)<<" "; } cout<<endl; space--;//shape } cout<<endl; cin>>r; return 0; …  |
| | Hi I don't really know where to put this but how does one use WxWidgets with c++. I just need to know the syntax or structure of it. For example: What would wxwidgets equivalent be for the native code... [CODE] #include <iostream> int main() { int num1, num2, total; std::cout<<"Enter … |
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| | hi... i am completely new to xml.. how to compare parsed data in c++??.. I am using expat. should i use huge else-if statements to compare the elements i just extracted ?? is there anyother way of doing it??? I have a feeling i have messed up somewhere.. |
| | I am trying to change some data indside a txt file, based on the input given by the user.The input file is [B]indata.txt[/B](The commented part is, what it holds).And the output file is [B]"outdata.txt"[/B]... The problem is with line 52 and 53.Notice that in the loop from line 55 to … |
| | Hi guys, I have a code in C++ that was written way back in 1995.Back then,I guess even in C++,#include<iostream.h> was used unlike nowadays, #include<iostream> using namespace std;.....im rite now trying to compile that code with a g++ compiler.It gives the error at lots of places:"cout not declared in this … |
| | So to accept multiple clients, I am dynamically accepting them, but so that I can handle them(data transfer etc...) I wrote a linked list which so far works fine. I can broadcast a message to all clients fine by looping through my list and SEND->client, fairly standard. But when a … |
| | Hey there! I'm new to c++ and programming in general and have a quick question to why the program below works. I had most of it completed but for hours i couldn't figure out why every time i tried to enter input for the "make" member of my dynamic structure … |
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| | My error occurs on line 191 and 156. For some reason it is saying it cant find the default constructor when I have supplied the right amount of parameters. The error it is giving me is "Cannot find default constructor to initialize base class" code: [url]http://pastebin.com/WLMvBMyy[/url] If anyone could offer … |
| | Hello guys, I'm working on a new project in C++ and I need to parse some XML files, by reading some articles on the web I found that the most commonly used one is the Xerces library. However, I'm currently having troubles. Can anyone tell me how can I include … |
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| | I am trying to create a code that receives up to 50 integers from the keyboard, sorts the array from largest to smallest, then counts the instances of each number and displays the number inputted and the count of the number of instances. For example, if the number 11 was … |
| | I am trying to set up the GUI Library FLTK but cannot find a way to set it up for MSVC++ 2010 Express. I looked on Google but failed to find any tutorials on doing this. I also tried CMake but ended up with an error in CMake and an …  |
| | The forum is buzzing with questions about tokenizing a C++ string. This is a short function that does it and returns a vector of the tokens. As an option, the delimiter string can represent either a multichar delimiter or a collection of single char delimiters: [code] // multichar delimiter == … |
 | any particular reason why r=p(3,1); cout<<r; spits out 1? note ive tested z m and t only r gives one even though its the exact same code ? what gives ? [CODE] #include <iostream> using namespace std; int p(int x,int y){ //supposed to be a power operation if anyone knows … |
 | Hi, everyone again. I have a new problem. I hope that somebody will help me. I still don't find a decision of my last problem. This time I have following task: I have a Form. I have ComboBox, DBGrid and Button. I must select name of table in which I … |
| | OK I am new to C++ so I decided I'd toy around with what I know and try and do some neat stuff. I'm trying to make a program that will try and make you guess the number it's thinking of. But every time I run the program it always …  |
 | Hello all, Anytime I write a header file in VS 2008, it doesn't compile... it tells me that "unexpected end of file found"..any help on this? Thanks!! |
| | Hi, I'm taking a class on C++ and we just went over classes and objects. We have a homework assignment due and I was wondering if someone could check over my work because some of this class stuff is hard to wrap my head around. Here's the homework assignment (it's … |
| | Good day, everyone. I am refreshing my c++ skills from a year break or so :$ I am having some troubles remembering on how to write to a file. I have the general idea down, but I am not sure what I am doing wrong. I would be much appreciative … |
| | hi Everyone, I'm working with a Text file. Somewhere in my code a function returns the current position of the file pointer. But i want it to go to the next line or 2 lines after to do a string search there. Anybody knows how i can do that? Bests, |
| | I am trying to use a digraph to read in airline flight information from a file and then ask the user for the source and destination then print out the path to get there. the text file contains source, destination, miles, cost. I am having problems making it use the … |
| | I could use some help getting my code to work. The user inputs the time in digits (ex: 7 35) and then the time is output in text (ex: seven thirty-five). I have populated an array but i can't get anything to print from the array. Here is what I … |
| | I am looking for a good C++ example of a simple MySQL client program written in C++ and runs on Linux, using MySQL++ libraries that does the following (no threading): Accessing Option File Contents, ~/.my.cnf, in user home folder to read settings (load_defaults). Constructing and sending the sql statement that …  |
| | Hello there! I need a little help with a key detection program, i only need to watch for 1 key just -like the method to start recording with fraps-. I'm trying to use WH_KEYBOARD hook(not the WH_KEYBOARD_LL because i need the program to do stuff while "hooking"). In the dll … |
| | Hi, I am trying to call a MouseUp event. I usually do this with button events wich is my first example that works fine but I have compile error for the MouseUp event like shown below. I dont know if there perheps is a difference here that I am missing … |
| | Could someone please make me understand a line in the code? Ive commented it [code] class Circle { protected: double radius; public: Circle(double r = 1.0) : radius(r) {} //this part is what i dont understand double calVal(); }; [/code] |
| | Hy. I am trying to encode a ASN1 structure with DER , but i get a parse error. My in text is : 304913214D617374657220646520736563757269746174656120696E666F726D6174696569301E170D3039313030313030303030305A170D3130303331353030303030305A020103010101 and the code is this: [CODE]include <openssl/asn1.h> #include <stdio.h> #include<conio.h> #include <string.h> #include <iostream> #include <fstream> #pragma comment( lib, "libeay32.lib" ) using namespace std; int main() … |
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