51,593 Topics
 | |
 | The error is listed in the title and then commented in main (last comment). The program runs but once it encounters the bool expression I overloaded, it seems as if the program pauses. I have a feeling it's a stack overload due to the way my function operates, but I … |
| | I'm trying to use fstreams to read and write binary data to a file with the following code: [CODE]#include <fstream> #include <iostream> using namespace std; int main(){ ofstream out("test.data", ios::binary); for(uint i=0; i<10; i++){ uint outcount = i+100; out.write((char*)&outcount, sizeof(uint)); } ifstream in("test.data", ios::binary); for(int i=0; i<10; i++){ uint incount; …  |
 | In VC++ 2008 Express, I open a new "Hello World" project (CLR Console Application). If I right-click the project in the solution explorer, and select "properties", I get a "... Property Pages" window which shows a line entry for: Configuration Properties / C,C++ / General / Additional Include Directories. It … |
| | I have a vector<classType> vect in order to call sort( vect.begin(), vect.end() ), what needs implemented in the class classType? I have the overloaded operator< and a copy constructor, but the problem i get is that some member variables of classType that are pointers dereferenciate during the call to the …  |
| | Ok, I am building a text based rpg. This an excerpt from my code. at one point it asks what your name is. When you type that in I put it into a string variable called name but I want to be able to save it to a binary file … |
| | Hi, I have a readFile() function that reads a csv file into a vector. The first two lines of the csv are collum headings. After reading and displaying the file on screen, replacing ","'s with spaces, it asks if the user wants to append new entries. If yes, it calls … |
| | i want to be able to create dynamic buttons. so ive used the code : [CODE]TButton* Btn = new TButton(this);[/CODE] my first question is: how do i assign a function to the dynamic button?! my second question is how can i put the code into a loop as to be … |
| | i learn c++ chapter in objects and classes but i read previous chapter functins i have a problem i this chapter following code: [B][U]writer once time write the code:[/U][/B] return 0; [B][U]second time write the code in another programme:[/U][/B] return 0.569575 * pound this code programme in line 7. please … |
| | yes I'm tryint to learn c++ and I wanted to ask someone a question, I'm on functions, and so far when you do the return statement it says return 0,, and it started saying return and then a variable and the way it seems to say it , it changes … |
| | I have heard about the: char myline[100]; cin.getline(myline,100); but when my coding is long it doesnt work i gues as long as i would like it to? here is my code for example: [code] #include <iostream> using namespace std; int main() { int length; int width; cout << "Enter the … |
| | hi all i am using VC++ editor. Can anyone tell me how to insert sleep in my program? i have tried sleep(). but it is giving an warning 'sleep' undefined; assuming extern returning int. Thanks in advance |
| | Hi !!! I have so strange problem... i dont know what i have to do.. Quote from[B] form1.h :[/B] [code] #pragma once #include "Center.h" #include <time.h> #include <windows.h> namespace RCK { using namespace System; using namespace System::ComponentModel; using namespace System::Collections; using namespace System::Windows::Forms; using namespace System::Data; using namespace System::Drawing; /// … |
| | Help - the static_cast< double > is not calculating the value of term and I cannot see what is wrong. [code] void eConstant::compute() { cout << "Enter the desired level of accuracy to calculate the mathematical constant e, \nmeaning the number of terms in the summation: "; cin >> accuracy; … |
| | Hi... I want to create windows service for my abc.exe through programaticaly in c or c++ how to do this??? |
| | Hello, I've written a short app that (in theory) connects to a remote box on port 23, and simply reads what is returned. The ultimate goal is to log on to the box automatically in order to automate some of my less interesting tasks. I get the socket set up, … |
| | I'm trying to skip part of my loops by using continue; however, I am unsure where how much code each continue statement skips. My suspicion is that, in the below code, the continue statements effectively do nothing and put my code right before the return false statements. I have marked … |
| | 3.6 * vector_a; why can I not implement this binary operator as a member operator of a class Vector? [code] class cycle { cycle(); ~cycle; pedal(); }; class bicycle { bicycle(); ~cycle; pedal(); }; bicycle *bikeptr = new bicycle; cycle cycleptr=dynamic_cast <cycle>bikeptr; cycleptr->pedal(); [/code] Okay, here are the questions I … |
| | I've got a pretty simple question. I'm trying to ask the player for to choose a difficulty. I want the case to be to not affect his choice, so I am using the toupper() function. Unfortunately, when I try to return the value of the difficulty, no matter what difficulty …  |
| | Hi, I want to use a function from a different file in the main method of another file. Both the files are in the same visual studio project. I used the extern "C" keyword in the foreward declaration of this external function in the file containing the main method but … |
| | I'm creating a program that connects to an IP address on a specific port, then uses the recv() function to return the data from the address. I don't know how to go about creating the buffer the data will save to. At first I was just going to create a … |
| | Hey all, I need a bit of help starting on a homework assignment. I'm not asking for you to do it for me, I just need a little help getting started on it. Here is the site with information about the assignment: [URL="http://scidiv.bcc.ctc.edu/fl/cs210/Program4-S08.html"]http://scidiv.bcc.ctc.edu/fl/cs210/Program4-S08.html[/URL] I really need just a little bit … |
| | How do I reverse the numbers in my program to produce the orginal numbers and the numbers in reverse? int magic_box (int N) { int digit1, digit2, digit3; digit1 = N / 100; digit2 = N % 100 /10; digit3 = N % 10; return digit1 + digit2 * 10 … |
| | What am I suppose to add here to buffer the weird sequence of numbers and letters? [code] /*------------------------------------------------------------------ * Assignment 4: Breaking the Code. Nested loops, command-line arguments.. *Worth: 50 points. 60 points if you write a "general purpose" program which can process ANY of the "document??.cry" files from the …  |
| | In a dataGridView1, you can Edit for example 5 Columns but before the First Column there is one column that has a star(*) in fron of the first row. What I wonder here is if it is possible to take this column away. It is possible to 'drag' the column … |
| | I wonder if it is possible to change the color on the headers on a dataGridView1. I have searched in the members and properties but are not sure if I can find anything. By default it seems that the headercolor is "Control". Ex: is it possible to change the color … |
| | i'm having problems reading with scanf... i'm trying to input some coordinates enclosed in brackets but it kinda skips the input that way... is it forbidden to say scanf( "(%d,%d) (%d,%d) (%d,%d) (%d,%d)", x1, yo, x2, y2, x3, y3, x4, y4 );? i'm using yo instead of y1 cause cmath … |
| | I currently have a program that writes Sudoku boards to files; however, I would like the program to be able to read the board already in the file, copy it and then add another board to the file. It follows, then, that if there were two boards in the file, … |
| | Hello, I am programming an image application with a GUI. I open a grayscale image like this: [code] String^ s = openFileDialog1->FileName; s = s->Substring(s->LastIndexOf('\') + 1, (s->Length - s->LastIndexOf('\')) - 1); InputImageFileName = s; bmpInputImage = gcnew System::Drawing::Bitmap(openFileDialog1->FileName); [/code] then I create a new image [code] binaryImage=gcnew System::Drawing::Bitmap(bmpInputImage); [/code] … |
| | Dreading memory leaks, I would like to make sure I have an understanding of the following code: [code=CPP] //vector initialized to allocate 10 string objects vector<string> *pvec1 = new vector<string>(10); delete pvec1; //10 vector<string> objects vector<string> *pvec2 = new vector<string>[10]; pvec2[0].push_back("test1"); delete [] pvec2; [/code] 1> Would executing the preceding … |
| | I need to make a handman game I have code but it won't show all the gesses at once and it won't end even if you get it right. PLEASE HELP This is what I have [code] #include <iostream> using namespace std; int main() { char solution[20]; //holds solution char …  |
| | So I have a multi-dimensional array, and I want to pass a reference of it to another function so that the array is defined in the scope of the function, because the array is not a global variable. If I can remember correctly, the syntax looks a little like this: … |
| | i am getting error in following program. what is "iota". Why it is giving an error in the following program [CODE] #include<iostream> #include<vector> #include<algorithm> using namespace std; int main() { vector<int> V(10); iota(V.begin(), V.end(), 7); copy(V.begin(), V.end(), ostream_iterator<int>(cout, " ")); cout << endl; cin.get(); } [/CODE] |
| | Hi, I am using Visual Studio 2008 with .NET, on Windows XP. Does anyone know how to (in C++): *Recieve a trigger signal(1bit) from an external device, ie throught a generic microphone input(jack). * Play/stream a 1D table of raw data(double/long) as an audible sound throught the sound card. Assume … |
 | Hello. I am working on a code where I need to simulate a character string on the serial port com1. (/dev/ttyS0). I have a WinCom aplication which helps me to read the output from an Enigma receiver. This receiver sends out signal strings like this: 5012 444418E13001000<DC4> // signal @ …  |
| | I want to run the following code. Its giving error as "Fatal Error" not able to open 'print.hpp' . No such file or directory.. I didn't understand what is #include "print.hpp". what type of file it is. shall we have to write this header file before executing the program. [code] … |
| | This is a very beta peice of code in a function I am working on that will write records to a file (casted as character data). I'm using an overloaded operator to set values in a class called Account. My teacher insists that I use the account as a way … |
| | Hi, all. I am very new to C++ and am close to losing my mind with the homework. We are asked to generate a multiplication table using a 'for statement'. User is to input a number between 1-12; the program will generate a multiplication table and should loop for no … |
| | I need to write a small program which collects (20-36 string) data from several com (serial ports) and sends them out on one. For example com2,3,4 to com1. It should be on Windows Xp workstation. (It is possible that I will do it later on linux, it seems to me … |
| | hi, i want to write a program in c++ or c# that will show me all the threads and their priority that now running in my application. how can i do this??? thanks, shay. |
| | I have written a few games in C++ with OpenGL, and I am working on another one now, its my biggest project. Everything works really great on my computer, but whenever I move my executable to another computer, the depth testing completely stops working. I have no idea what causes … |
 | I was trying to see if my code for copying an array worked when I got this scary looking error message: Debug Assertion failed! Program: ...dio 2008\Projects\Test_Prep\Test_prep.exe File: f:\dd\vctools\crt_bld\self_x86\srt\dbgdel.cpp Line: 52 Expression _BLOCK_TYPE_IS_VALID(pHead->nBlockUse) Here's my testing code and the function I wrote: [CODE]int main() { const int MAX_SIZE = 5; … |
| | guys...could I ask for your help, I was given a programming assignment but I cant seem to understand the problem heres the problem: [B]write a program that creates an array of 100 random integers in the range from 1 to 200 and, then use a sequential search to search the … |
| | Hello All, I have a chat friend online who said to me that if I don't know java or .Net then my web design will not make me money. I know how to program in php, asp html etc and willing to learn more as knowledge has no age limit. … |
 | Hi I have a small question, probably quite obvious but I cant seem to figure it out. When using the ifstream or any other stream you can tell if it was sucessfull in its last event. For example: [CODE=CPP] #include<fstream> int main() { ifstream in("test.txt", ios::in); if (in) { } … |
| | I was debugging some code yesterday and, after about fifteen minutes, found the culprit. This was in the code: [code] if (a = b) { // code } [/code] instead of this: [code] if (a == b) { // code } [/code] A very common mistake, but an aggravating one. … |
| | I basically need a function that, after a certain amount of time has elapsed, will restart a program from scratch. This is because the code can get stuck at a certain point if wrong decisions are made. I am curious how to go about making this. I am sure it … |
| | I wonder if there is a good way to substring this string: [code] std::string OneString = "1,2,3,4,5,6,7,8,9"; [/code] so the substring will look like this: [B]1,2,3,4,5,6[/B] So what I am trying to do or wonder is, if there is a good way to substring from the end and 3 Commas … |
 | Hi, We're using curses library functions to draw windows in our project. For showing an error the error message is enclosed within '-'s , it seems to be working fine till we ported to a new linux machine where its displaying some garbage instead of the '-' . To be … |
| | I need to keep track of students last names and their GPAs. I need the user to enter 7 names and their GPA. I need to output it in columns. Also I need the average GPA and the Highest GPA. And I also need 'Last Name' earned the highest GPA. … |
| | So the problem seems to be when i try to compile its telling me on line 16 of the main program (the last line) "unqualified-id at end of input" and "expected ',' or ';" at end of input I played with just about every combination of ending brackets and semi … |
The End.