49,761 Topics
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 | Ok, so, this code snippet is a reply to this thread: http://www.daniweb.com/software-development/cpp/threads/425821/prime-number-c From what I understood form the OPs request, is that, he wanted an algorihm which would check for prime numbers in a given range, applying these conditions: a number is to be considered valid if: a. the number … |
| | Using cout to produce output - double space = 4.0 - 1.9999999; cout << space << endl; result: 2 Why am I not getting 2.0000001 instead? What should the type be or the numbers to make this 2.0000001? Thanks  |
 | Would anyone know of a reporting toolkit library for C++ which can be compiled as part of a project. It will need to be ablue to display tables, display charts and be printable through a printer. Preferabely free though I haven't been able to find any at all. The closest … |
| | A means AMA but i cant figure out whats wrong cuz its gotta accept both capital and small letters help please #include<iostream.h> void main() { char x[2]; cout<<"What does the letter A mean in ACLC?"; cout<<endl<<"S:"; cin.getline(x,2); { if(x[0]=='A'||x[0]=='a') x[0]='y'; else x[0]='n'; { } if(x[1]=='M'||x[1]=='m') x[1]='y'; else x[1]='n'; } { …  |
| | I got this info off a website. tells u how to make a clock in C++... can anyone tell me how to make it so the PC doesn't use 100% cpu? if u look in task manager ull see <ProjectName> is using 100% cpu [code=c] // crt_clock.c // This example …  |
| | Hi all, I am trying to write a CWEB c++ program that just keepsgoing until the user types 'no'. Anyway i get some errors that I can't fix. Here is the .w file (x's are comment blocks to save congestion) @* Program Skeleton @ x @c using namespace std;@; @<Header … |
| | 4B 50 7B F1 F4 F5 5E 50 7B F1 F4 F5 5E 4B 4B 4B 4B 50 7B F1 F4 F5 5E 4B 50 7B F1 F4 F5 5E 50 7B F1 F4 F5 5E 4B 4B 50 7B F1 F4 F5 5E 4B 50 7B F1 F4 F5 …  |
 | Hi, Do you have any useful explanation of how to create a draggable window? What I wish to say is when you select your window will have no border ( considering that, it cannot be dragged around screen), how to make it draggable, for example by making a certain area … |
| | I am trying to make something like a firewall but it isnt a firewall it is just suppose to see all the incomming and outgoing connections of each port. And put the IP address and port into a .txt file. Basicly creating a log of incomming and outgoing connections. Nothing …  |
| | I use code::blocks as an IDE but now i want to create a .dll file. I have followed this tutorial however it is for VC++. TUTORIAL: http://msdn.microsoft.com/en-US/library/vstudio/ms235636 I am strugeling becuase I am used to creating .dlls in C#. They are so easy. You just create a new library project. … |
| | **Hi there, I'm new to C++ (bet you guys don't hear that very often!!) and what I'm trying to do, in a console application, is this: 1. Ask for a number 2. If the user input isn't a valid float, get angry and go back to 1. 3. If the …  |
 | Okay so here's the thing...I came across a code of my classmate that i'm not familiar with...the only thing i know is the printf is the same as cout...right??can someone explain this in iosteam.h form?? #include <stdio.h> void bubble_sort(long [], long); int main() { long array[100], n, c; printf("Enter number … |
| | Dear C++ Gurus/Experts, I am writing a program to automate excel.My program is working well when I use integer (Write/Read) in excel.My program also works well when I use string.But the issue appears when I use array of strings.I am getting the issue as below **"error C2664: 'SysAllocString' : cannot … |
 | Hi there everyone... Allright my setting is this: I have written an C++ application that receives input from a user app, converts it to XML, and then posts it to our ERP (Syspro) through e.net COM objects using ActiveQt and in specific QAxObject... The problem is this: QAxObject inherits from … |
| | any idea on how to change strcpy in c++ int main() { //all the winning combination strcpy(winKey[1].key, "123"); strcpy(winKey[2].key, "456"); strcpy(winKey[3].key, "789"); strcpy(winKey[4].key, "147"); strcpy(winKey[5].key, "258"); strcpy(winKey[6].key, "369"); strcpy(winKey[7].key, "159"); strcpy(winKey[8].key, "357"); }  |
| | Good day! I have started a little inheritance on my simple class that takes the addition function of two numbers on the other class but the sum is always zero even if it is not supposed to be. Here is my code so far: #include<iostream> using namespace std; class Addition … |
 | guys... teach me... a-z of ADO connetion of my sql server with VC++... soon... or.. im trapped!!! how do u enable the connection setting?? and i am using VC++ 2005.. |
| | I doesn't know why my program after enter main menu and want to call any other function will stoppped working,this is the question Write a program that is able to help a school teacher to input, manipulate and record marks of students for 8 subjects. These subjects are English, Physics, … |
| | Hey I just tried using the OpenCV for the past few hours but I keep on failing. I am a Windows 7 user with Visual Studio 2008. I followed the instructions for OpenCV2.2 (whilst downloading the newest stable version 2.4) did the CMAKE phase exactly the way it says . …  |
| | please visit the following link: http://www.techgig.com/codecontest/problem/Rolling-Dices-36 click on participate and please see the code editor on the right side. In the code skeleton there, you can see a function with taking two arguments,both character arrays. I know a method to solve this problem if both the arrays were integer arrays. … |
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 | Hey! i've been trying to create a header file using dev C++ but i'm stuck with sum errors. Can anyone help me out in this? #ifndef SUM_H #define SUM_H template <class T> class add { private: const T a,b; public: T sum(T,T); void displaysum(); }; template <class T> T add::sum(T … |
| | Recently i saw this code on the net and i have some questions taht i dun understand. Hope some1 can help to ans. #include <iostream> #include <stdlib.h> #include <time.h> #include <string.h> using namespace std; struct combos { char key[3]; char holder[3]; }; void displayBoard(); //display board void computerMove(); //AI;s Move … |
| | Creating a simply data base to store these variavles. The three entities are book, brower and Records. Using these we will create a simple database from dev c++. |
| | A really rooky question here but I'm still trying to understand something. If I'm using WXWidgets I assume the purpose of the GUI is to provide a trigger point from where I can process event s via the event loop. I basically create the gui as I want it and … |
| | Hello I am an beginner programmer in: Java,C++,C i was wondering if anyone could help me make a online language conversion tool that can convert from java into C++ Any help will be appreciated |
| | in the following code how does the compiler comes to know that it has to call the postfix function class Digit { private: int m_nDigit; public: Digit(int nDigit=0) { m_nDigit = nDigit; } Digit& operator++(); // prefix Digit& operator--(); // prefix Digit operator++(int); // postfix Digit operator--(int); // postfix int … |
 | Hi! I understand almost all basic theory in C++ (including templates, inheritance, STL etc.) and I'd like to start understanding C++ in Windows, specifically stuff related to memory, calls, hooks, stuff like that. I don't visualize what do I want to do exactly (probably that's why I'm asking here) but …  |
| | I came up with a bit of code that I think will theoretically factor any given integer within the range of integers. I'm posting this thread to ask two questions: First, is there any way that I can do this more efficiently, and second, what is the easiest way to … |
| | Hi there, I'm fairly new to this C++ thing so I hope you can help. I'm writing a program that prints out the coordinates of atoms in a simulation box (30x30x30). I have a fair few header and .cpp files so I'll only paste the bits that are faulty. I … |
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