49,765 Topics
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| | i have problem only declaring struct variable. i declare a struct in struct.h file and i wan main.c and class.h also using the same variable. But the class.h file say the struct is undeclare.. example: struct.h [CODE]struct car{ int year;};[/CODE] main.c [CODE]#include <cstdlib> #include <iostream> #include "struct.h" #include "class.h" using … |
| | It's my school project, I wrote this C++ program with file handling. I am getting these errors and I can't understand what's causing the errors, if anyone can rectify my program, that would be great. My program :- [CODE]#include<fstream.h> // for C++ and File-Handling functions #include<conio.h> // for getch() and …  |
| | i have just started learning c++ i just want a program to print ood & even from 1-100 please help me |
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| | Hi everyone, i want to ask question about how to make a multiple tree in c++. So i want to make a tree which contain more than 2 child(or node or leaf), but i don't know how to make a tree like this. does anyone have an example about this? … |
| | hi guys how are you ?! hope every thing is alright. well i want to make something like this [URL="http://www.coderun.com/"]one[/URL] can anyone help me how could i start in steps ? what books should i read ?! Thanks your help will be greatly appreciated.  |
| | I am having trouble with this one. Whenever I run it I enter in the grade value and it starts repeating over and over really fast. What is wrong with it? [CODE]# include <iostream> using namespace std; int main () { cout << "welcome to my GPA calculator\n" << endl; … |
| | I commented on the code what is my doubt. I don´t know I can´t I simply use arq_linha_part >> parm; If I use that it returns me the error: 1>------ Build started: Project: Interface GaussSolve, Configuration: Debug Win32 ------ 1>Compiling... 1>Interface GaussSolve.cpp 1>c:\users\fernando\documents\visual studio 2008\projects\interface gausssolve\interface gausssolve\interface gausssolve.cpp(38) : error … |
| | Hy. I have to make a program to crypt a text entered from the keyboard whith aes 256 , but i have problems when i try to split the text in two.I get a bad_ptr when i declare unsigned char** intext=new unsigned char* [16]; [CODE] #include<iostream> #include <fstream> #include<conio.h> #include … |
| | I am pretty proficient in C++ and Java. I know that most progrmas could be written in either language. My question for those of you who have been out there for a while, do companies tend to use one programming language for certain types of programs? For example, is C++ … |
| | plz send me some imp in c & c++ urgently my exam is after 2 days |
| | My entrada.txt jas the following contents: [code] #Commented text #This should be used like: #Bar:Bar_number:Type_of_the_bar; # # Bar:1:PV:1.05 [/code] So the lines that starts with # are commented so the program will not process them. Everything is working fine, but when I used getline() to delimit the string on ":" … |
| | What is the correct way to declare a multidimensional array. I tried like this [CODE]unsigned char** intext=new unsigned char*[16];[/CODE] but i get a bad_ptr. |
| | Hi, I´m having problem while converting char to string. [code=c] #include "stdafx.h" #include <fstream> #include <cstdio> #include <iostream> int main() { std::ifstream arquivo("entrada.txt"); if (!arquivo) { std::cout << "Arquivo não encontrado" << std::endl<< std::endl; system("PAUSE"); exit(0); } std::string token; char arquivo_linha[255]; while(arquivo) { arquivo.getline(arquivo_linha,255); if (arquivo_linha[0] != 35) { token … |
| | I´m using Visual C++ Studio and when I include another .cpp file it doesn´t takes all the what have been included before. Here is an example: main.cpp [code=c] #include <iostream> #include <string> #include <sstream> #include "readtext.cpp" int main() { teste(); return 0; } //readtext.cpp void text() { printf("teste"); } [/code] … |
| | Can anyone tell me what GUI to use? And is there a GUI similar or same like standard library? Thanks in advance.  |
| | Well, I wonder HOW to make an explode() function from PHP in C++ For those who don't know. explode($separator, $string) breaks given $string through given $separator for example: [code] $string = "Hello world!"; $result = explode(" ", $string); echo $result[0]; //IT will give us HELLO word echo $result[1]; //IT will … |
 | Im working on a program to get single characters from a string and i guess im doing it wrong but i was using strok() to tokenize the string in the hopes that it would do so but anyway this is what ive got so far and before you ask its …  |
| | Hi, I have to calculate the exponetial of a large (on the order of 10^5) negative number. I tried using exp(), the exponential function from the cmath library, but I get an answer of 0. So, I tried to use the power series for the exponential function. For numbers from …  |
| | I please want to ask if anybody knows how to install allegro without use of terminal.. |
| | Hi everybody . i have a problem that i have been trying to solve for weeks can u help. this is bonus problem given to me by my professor in college. hers is the description: menu driven library: 1. list books 2. add books 3. find books a. by id … |
 | i need some help: i have something like: word1:word2:word3:word4 ...read from a file,how can i do,when i read this line,each word delimit by ":" to put into a string.... string str1,str2,str3,str4; str1 = word1; ........... str4 = word4; sorry for my english i hope eu understand  |
| | Ok, I am about 20+ hours into this utterly confusing idea of link lists. The classes I have are listed below. I cannot for the life of me understand how I would write a reverse function. My office floor is cluttered with printouts and scribbles from trying to make this … |
| | No programs are running.Both is Visual Studio and Codeblocks... both are showing the following error, [B]LINK : fatal error LNK1104: cannot open file 'kernel32.lib'[/B] I have google it, some say setting environment to "C:\Program Files\Microsoft SDKs\Windows\v5.0" or reinstalling visual studio, or editing registry key "HKEY_CURRENT_USER\SOFTWARE\Microsoft\MicrosoftSDKs\Windows\CurrentInstallFolder"(i didn't find any MicrosoftSDKs under … |
| | Why is the constructor called from top to bottom rather than bottom to top ???? |
| | I read that the initialisation of the vptr is done by the default constructor automatically . What happens when u provide implementation for the default constructor . Is the initialisation code added automatically ??? |
| | I have a file over 100 Kb long. I want to perform operations on successive batches of 256 characters. [CODE] int fs=0; char ss[32556]; ifstream nm,nm1; nm1.open("as86.txt"); if(nm1.is_open()) { nm1.seekg(0, ios::end ); fs = nm1.tellg(); } nm1.close(); nm.open("as86.txt"); nm.read(ss,fs+1); nm.close(); cout << endl << fs << endl; ofstream mn; mn.open("as86.txt"); … |
| | I know this gets asked a lot but i want to make a program that sends me some form of an alert at a certain time of day. I am using windows 1. i want it too run invisibly so no windows, doesn't show in task bar, or task manger … |
| | hey please can anybody guide me how we can take input from the command prompt as we do in C++ and Java. I can take input using .dat files but I want the user to give input in the command prompt. I will be very thankful. |
| | Hello, yesterday, a friend of mine who develops in all kinds of languages but mostly VisualBasic.NET, told me he only listens to the regular kind of pop and rock, and sometimes to heavy metal kind of things. But -he told me- when he had something to do in C-style code …  |
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