49,761 Topics
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| | Hello, I'm working on a simple winsock2 messaging program with a client and a server. The server, which uses the same code as the client, save for some preprocessor directives, compiles fine, but the client throws up 3 unresovled external symbol errors: Error 1 error LNK2019: unresolved external symbol "public: … |
| | Hi there, I am a Delphi guy and I am a bit new to C++. I have this annoying error when I try to compile and I have no idea how to solve this: [B]error: request for member ‘GetVector’ in ‘gff’, which is of non-class type ‘TGff_File*’[/B] on line #20 … |
| | please help me with this i run a borland c++ 5.02, when i try to run this piece of code #include <windows.h> int APIENTRY WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpCmdLine, int nCmdShow) { MessageBox(NULL, "\tHello World!", "My first windows app", NULL); return 0; } i am getting an `unresolved external …  |
| | This question has been bothering me all day. if I'm trying to pull out all strings that are in a txt file and all start with "abcde" is there anyway to find them, and copy the strings?? assuming the txt file contains lots of text |
| | Hi! I’ve been working on a project using C++ and I’m facing some difficulties. I have to write a user system consisting of two classes. One class “Account” with the parameters: Balance, password and username. Account management will contain functions for operating on the balance and for reading/writing the account …  |
| | Hi All, I have a USB capture Card (EasyCap USB2.0 Video Adapter with Audio) Model DC60. In Windows XP it comes under Imaging Devices as (Syntek STK1160). i have attached a camera to the input and windows xp displays the video in it's default dialog. I want to programatically display … |
 | >>Ok, so time() function (argument being null) returns what? It returns the number of seconds since 1970, as you previously posted. It doesn't matter whether the parameter is NULL or not, it will always return the same value. |
 | To preface this post I'm going to say that what I'm looking to do is purely in the theorhetical stages at this moment so I don't have any code to share yet. At it's basest essence what I'm attempting to do is compare Image A with Image B to determine … |
| | [CODE]#include <stdio.h> cant figure it out, im trying to count all digits please help with this bugs int main() { int iochar, numdigits=0, numlower=0, numupper=0, numwhites=0; printf("Please enter a phrase:\n\n"); while((iochar=getchar())!=EOF) { if ((iochar='\o ')||(iochar='\t')||(iochar='\n')) { numwhites++; putchar(iochar); } else if((iochar>='0')&&(iochar<='9')) { numdigits++; putchar(iochar); } else if(('a'<=iochar)&&(iochar<='z')) { numlower++; putchar(iochar-32); … |
| | Hi folks, I have googled around, read a lot and still can't figure it out. I know a bit of C++, but am far from literate in all commands. I am much happier with QBasic (old i know, but it works). I have made qb code and need to convert …  |
| | after finishing books of thinking in c++ vol1 and voL2 , ı decided to read c++ programming language 3rd edition by stroustrup. Do you think that it is appropriate?  |
| | Hey everyone. I am attempting to create a simple console maze generator in C++ for a school project. I've already gotten most of it down but I'm having a problem debugging the actual generation algorithm I've implemented. I've been learning C++ for the past few months now but I haven't … |
| | Hey there guys I need your help as I do not fully understand the program source code below. This program will multiply two numbers without using the multiplication sign (*). I am confused with the highlighted part, the for loop part. Here it is: [CODE]#include <iostream> #include <string> using namespace … |
| | Can someone either explain this or give me an example of what it is asking for. Heres my code if you need it In the attached picture [CODE] /////////////////////////////////////////////////////////////////////////////// // // Name: GCD.cpp // Author: Jeffrey A. Stone // Course: CMPSC 101/121 // Purpose: Computes the GCD of two integers. … |
| | I am working on a rainfall program that will ask the user to enter the total rainfall for each month, then will calculate the total rainfall for the year, the average monthly rainfall and is supposed to display the month names for the highest and lowest month. I have everything … |
| | Having trouble stopping my do,while loop. It asks the right questions, and I thought I had the right qualifier, while blah>0, do such and such, but it continues in the loop and keeps asking the questions Here's what i've got: cout<<"Now let's subtract the door and window area."<<"How many doors … |
| | I am using darkGDK to complete an asignment where I am to create a sprite with a moon background and to make a rocket ship move up with the spacebar pressed and come back down agian when it is released. I can't figure out what I don't have in my … |
| | hi all I want to start now with C++ windows.h libary. I already know now the basics i only programmed in CMD command line programming now i want to program further are there some tutorials or something that i can go further i dont want to stay only at a … |
| | hello i need to fix the problems in this program. can some one please fix them for me or give me a hint how to fix them cause i really do not know how to fix them. i also added the errors if you do not have C++ program at … |
| | simple question that baffles me. attempting to get multiple data from a user, but cannot get the program to "wait" for the data. It spits out all the questions at once. here's what I have written //woody0114 #include <iostream> #include<cmath> using namespace std; double HSF(double ft_height, double ft_width, double s_height, …  |
| | just as the title says i have a problem with serializzing class which has a pointer to class. so this is a mock-up of my class structure [code] class X{ private: int number; public: int set_number(int); int get_number(void); //I'm defining the stream operators so class will act as primitive data …  |
| | 0 down vote favorite I'm new to Qt, and trying to compile and run this Qt program I typed from the [I]Programming with Qt[/I] book: [CODE]#include <qapplication.h> #include <qlabel.h> int main(int argc, char *argv[]) { QApplication myapp(argc, argv); QLabel *mylabel = new QLabel("Hello",0); mylabel->resize(120,30); myapp.setMainWidget(mylabel); mylabel->show(); return myapp.exec(); }[/CODE] When …  |
| | I have a assignment which requires the use of multiple files. I don't believe I am linking them together correctly. I'm using visual basic 2008 at the moment. Ofter I get the program working I'll create a make file and test that. I'm also not too familiar with the string.h … |
| | Well I have made separate programs for testing and debugging purposes and now I want to put them together. Is it possible to use one .cpp as some sort of a header file, and call it later on? I saw it done before but I think it was a makefile(which … |
| | My assignment is to make a program that can resize a dynamically allocated array. But when I delete a value, the program crashes (memory leak?). Here's my code. [CODE]#include <iostream> #include <cstdlib> #include <cstring> #include <limits> using namespace std; typedef char* charPtr; typedef charPtr* strPtr; strPtr delEntry(strPtr a, int &size, … |
| | So, here is the thing. I am dissecting some code to try and better understand how to finish my project (I'm a student. Made it to the final project without getting too lost!) and I am a little stuck. This part of the code randomly fills a 32x32 2D array …  |
| | I tried out this sample program [CODE]int main() { int *i=new int; return 0; } [/CODE] The return type of new is a void pointer . Pasted below [iCODE]void* operator new(std::size_t);[/iCODE] [iCODE]int *i=new int;[/iCODE] new int in the above statement should return void pointer . How can a void pointer … |
| | [CODE]#include<iostream> #include<stdio.h> using namespace std; int main() { for(int i=0;i<10;i++) { char *a=new char[10]; printf("%u\n",a); } return 0; }[/CODE] This is the output that i got 5377864 5377888 5377912 5377936 5377960 5377984 5378008 5378032 5378056 5378080 why the memory is increased in size of 24? |
 | Hello everyone. I am looking to see if there is any possible way Visual Basic 6.0 code can run in Visual C++ 2008 Express. Any help would be very appreciated. |
| | Yes, I did a search, and I understand time() better than before, but I would appreciate personal help. Initially, I wanted to make a program/function that would randomly generate a number. Next, I wanted to limit it between two defined numbers. I came across rand() yesterday, and I couldn't get … |
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