51,593 Topics
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| | When I click the "Go" button I want the button event in "wxQuestionMain.cpp" to call "somefunction()" which is inside "otherFile.cpp". That works just fine. But I then want to change the text in the textbox "txtCtrl1" from inside "somefunction()" and that won't work because "somefunction()" is not part of the … |
 | Here is the program assignment: [icode] Graph abstraction is important because it is used in many different areas of science, engineering, computer sciences and software engineering. For instance, the Internet makes use of graphs to represent the Internet router network configuration in order to determine the best route for forwarding … |
| | Hi everyone, I seem to be experiencing some problem with the linking of header files. I'm sort of creating Date structures and I have the following files: [list] [*][b]Date.h[/b]: Class Date declaration [*][b]Date.cpp[/b]: Class Date functions definitions and auxiliary functions [*][b]DateFormat.h: Class DateFormat declaration (used to format Date objects) [*][b]DateFormat.cpp: … |
| | Hi, Im currently making a program which would connect to a server which I got working perfectly, however I've gone to work on another feature for the program and that displaying the server details via an image. I've got the image I want its on the internet, but how can … |
| | Hello, I have a problem in reading p5 PGM file: [CODE] ifstream::pos_type _Start, _End, _Size; ifstream::off_type _newStart; char * memblock; vector<vector<int> > initMatrix ; std::ifstream inf; inf.open("a.pmg", ios_base::in | ios_base::binary); if (inf) { std::string line; for (int i = 0; i<3 ;i++)//skip the first 3 lines that contain the info … |
| | I have been running the program but it quits in the end on pressing alt+f5 it says BGI Error:- Graphics not Initialized(Use Initgraph) but i have sphecified the graphics driver properly and also egavga.bgi is also there in the folder bin  |
 | Hello, I have two arrays that contain different numbers that I need to compare with another array.. e.g. Array 1: 10 20 40 70 Array 2: 5 3 10 18 2 Basically, I want to write a program that calculates the highest value each array and then swops the values.. … |
| | please help me using C++ to create the following hierarchy of classes; (1). a [B]Person[/B] class with fields for name (type String) and an email address (type String). it should contain two constructors: one without input , a second one with input name of type string and email of type …  |
| | Hey guys. I'm trying to create a program which adds, searches & removes items from an array & i've been messing around with the code, trying to find answers on the internet but so far no dice. Could any of you help out? [CODE] void removeString(List& s, string strKey, const … |
 | Hey i have no idea whats goin wrong with this i think its to do with the fact that its in private but i have an error with calling weapon in the monster class (Monster.cpp) the error states that it is inaccessable :S here is my code: [CODE] //Monster.h #ifndef … |
| | [CODE]void inorder(struct node *r) { if(r!=NULL) { inorder(r->left); printf("\t %d",r->data); inorder(r->right); } }[/CODE] in the above code when the last element is reached i.e r->left becomes null then when inorder(r->left) is called it will send a null value to the function and if condition becomes false so the it'll come … |
| | Can some one help with this please. I need to update a Passengers Name, im using Strings not Char. [CODE] if (choice == 2) // Updates Record.. { merge_sort(0,N_PASSENGER-1); cout << "\n\t Enter the Seat Number:"; cin >> key k=binarySearch(passenger, 0, N_PASSENGER, key); // Search Array if(k>=0) cout << " … |
 | Hey Im currently working on a application server written in Java but to use information from a C++ program. The company seems to agree that rewriting thousands of lines of code would be time consuming and simply making libraries of key functions of the C++ program and then passing them … |
| | Hello, I joined here desperately asking for your help I have an assignment about creating a program that loads a text file given. the text file contains many lines and those lines are questions and answers it is on this sequence question answer question answer and so on so we … |
| | Soo last year, if im not mistaken , i asked for help with the random numbers generator. I didn't do C++ for quite some time, but i started again. So here is what i have : [CODE]#include "stdafx.h" #include <iostream> #include <fstream> #include <ctime> using namespace std; int main(){ srand(time(NULL)); … |
| | hello.. Can any one provide me the code in c++ of deleting the folders or a folder that is not empty..plzz  |
| | I know that this is a c++ forum but im a college student and i cant practice the programs without clearing this problem coz most of the programs require "resource.h" this program is to attach a menu to a window [code=c++] #include<afxwin.h> #include"resource.h" class myframe:public CFrameWnd { public: myframe() { … |
| | Hi, i have a project using basic inheritance to output shapes, but i would like to make it draw the shapes aswell. Does anyone know where i can find tutorials on how to draw shapes in dos using C++? thanks |
| | I'm having difficulty getting graphics into my C++ program. using Ubuntu 11.10 I /think/ my problem is simply my inability to download and install graphics libraries. Basically at the #include ... section of code i get an error every time about being unable to find xyz which i haven't managed … |
| | I have an assignment where I have to write a program to prompt the user for a file name and location (it is a text file), once the user has entered that, a menu pops up and gives the user 4 options and asks which one they would like to … |
| | is there a warior i can do the following: lets say i have [CODE]string userChoice;[/CODE] assume i have a Warrior class with move function in it is it possible to define : [CODE]#define WARRIOR "Warrior"[/CODE] and than use [CODE]userChoice=WARRIOR;[/CODE] and call the function [CODE]userChoice.move()[/CODE]? [CODE]void play(char gameWorld[][BOARD_SIZE]) { Warrior War(1,1); … |
| | Hello everyone I am trying to code an address book in C#, the program should be a console application and should stores names address etc in a string. The menu should loop and continue wish I have done using a do loop, at the moment I am stuck on the … |
| | So here I am, having a difficult time figuring out what's the problem, first of here's the code: [COLOR="red"]Preke.H[/COLOR] [CODE]#include <string> #include <sstream> #include <iomanip> using namespace std; class Preke { private: string pav; // prekės pavadinimas int atdata; // atvežimo į parduotuvę data int pardata; // pardavimo data int … |
| | Hi guys, I am implementing a singly linked list. The thing is whenever my str_temp goes above 12-15 elements, i get this error malloc: *** error for object 0x1099008b8: incorrect checksum for freed object - object was probably modified after being freed. *** set a breakpoint in malloc_error_break to debug … |
| | Consider a used-car yard called [B]Second Car Sales[/B] that needs to store details of the vehicles they have in stock. For each vehicle, we need to store the following details; Registration number, Make, Distance traveled in miles,Buying price and Selling price($) and Name of previous owner. [U]Required[/U]. (1) You are …  |
| | Hi guys, I have been given a task in my C++ course to develop an application that will ask the names of the students and store the entered values into a string type array. Considering each student has participated in four exams, the program should ask the points received and … |
| | Can Anyone advise me on the problem with the namespace in this code im getting an error. [CODE]//Main. #include "Weapon.h" #include "Room.h" #include <iostream> #include <fstream> using namespace std; int main() { ifstream myfile; string line; myfile.open("BronzeSword.txt"); if (myfile.is_open()) { while ( myfile.good() ) { getline (myfile,line); cout << line … |
| | Hello, I'm trying to read in words from a text file that look like: The World Fell Over etc.. But it doesn't seem to be working.. I've written some code however it will only show the first word OR loads of question marks.. [code] string dictionary() { string words[500]; ifstream …  |
 | So my code will compile and I do get output but it does not look the way its suppose to. I'm also not certain I am doing the virtual functions properly Expected Output Telephone Number : NPA-NXX-Line Customer: CustomerName Number of Working Lines: NumWorkingTNs Current Output derived class WorkTelephoneNumber constructor … |
| | [code] struct S { double operator()(char, int&); }; int main() { boost::result_of<S(char, int&)>::type f = 3.14; // f has type double } [/code] OS : win7 compiler :gcc mingw4.6.2 error message : error: no class template named 'result' in 'struct S'| error: expected ';' before 'f'| error: 'type' is not … |
| | hi, How to write code to convert to prepare one's complement and tow's complement in c++ |
| | Hey im a real noob at c++ and im trying to understand creating rooms setting a default and using a .txt file for room details. but i dont understand it. Im looking at some code from my lecturer and i dont understand were the wiz0-2.save comes from can some tell … |
| | Hello everyone in this activity i should use if, else if, Boolean, for loop, do while loop ok here is the OUTPUT i must do: GRADING SYSTEM! 96-100 =1.00 94-95 =1.25 92-93 =1.50 90-91 =1.75 88-89 =2.00 86-87 =2.25 84-85 =2.50 82-83 =2.75 80-81 =3.00 78-79 =3.25 75-77 =3.50 74-below … |
| | Passing Managed ByteArray to Native C++ DLL Anyone could help regarding passing ByteArray containing image data from axis camera to Native C++ DLL, Both compile OK, but DLL does not write ByteArray data to file?, just wondering if this is the correct way to pass ByteArray's to C++ DLL's here … |
| | I am using window 7 as a operating system and i run this code in same os it shows the problem related to file handling but this problem wasn't occurred on xp and vista whats the problem ........???????????? try to run on win 7 and xp you will get the … |
| | i am trying to print multiplication table by using for loop but it is showing only the last one instead of displaying all. :( [CODE]#include <iostream> using namespace std; int main() { int i,j, k; cout<< "enter i value"; cin>> i; for(j=0;j<20;j++) k=i*j; cout<< k <<endl; return 0; } [/CODE] |
| | I have created a program to generate a set of characters in an array. The objective is to move all vowels generated by the array to the left, for example: given the following array: A B C D E F G H I J K L M O P Q … |
| | I am working on a WIN32 (not MFC) project. Currently it uses the default XP and earlier file dialogs. In attempting to add the option, under Win7/Vista, to use the new-style file dialogs, I have come to a stumbling block. The only code examples I can find come from here: … |
 | Hi all, I'm having a problem here!! I've attended a lecture on Implementation of stacks in c++ using arrays and it wasn't really hard to understand, but now I'm supposed to know how to Implement a stack using linked list, that's the problem. help please?:confused: |
| | In a course, a teacher gives the following tests and assignments: A lab activity that is observed by the teacher and assigned a numeric score. A pass/fail exam that has 10 questions. The minimum passing score is 70. An essay that is assigned a numeric score. A final exam that … |
 | [CODE] class Rectangle { private: int num; public: int method1(int,int); }classOne; int Rectangle::method1(int num1,int num2) { classOne.num = (num1 * num2); return (classOne.num); } int main() { Rectangle* one = new Rectangle(); cout << (one->method1(2,10)); NewClass* newClassPointer = new NewClass(); //I want to access NewClass here.... } [/CODE] [CODE] NewClass::NewClass() … |
| | I'm trying to make a Palindrome program, that basically returns whatever you enter, just backwards. For some reason, the cNewArray is not only couting the original array backwards, but also the original array. For example if I enter "Hello" it returns "Hello = olleHHello". I'm very new to referencing pointers … |
| | I am trying to read integers from a txt file and then read the values looking for similarities. I am initializing an array as all 0 however, after I have read from the file and output all the variables, there are random numbers displayed in the array and I don't … |
| | hey guy's I'm relatively new to C++ and I've been asked to make a Caesar Cipher. I'm supposed to take an encrypted .txt file and output it's decryption. I've sort of got an idea of my flow as shown below but I'm confused as to how to transform capitals in … |
| | I've just kind of gotten bored reading over learncpp.com repeatedly, so i decided to attempt to make a couple small programs for my own enjoyment ( and to really test what I'm capable of ). I have been making this little game that I call Implicit Explicit. It's basically the … |
| | I'm trying to run a program with 3 levels:1st Menu, 2nd Input and Output and 3rd Calculations. But it keeps me giving me permition denied and Id returned 1 exit status when I try to compile. any suggestion? here is the code [ICODE]#include <stdio.h> #include <stdlib.h> #include <math.h> int calcpercent … |
| | hey guys, trying to run a program here but my compiler reads something like this 1>------ Build started: Project: ati, Configuration: Debug Win32 ------ 1>Compiling... 1>ati.cpp 1>Compiling manifest to resources... 1>Project : error PRJ0003 : Error spawning 'rc.exe'. 1>Build log was saved at "file://c:\Users\TEMP.STUDENTS.002\Documents\Visual Studio 2008\Projects\ati\ati\Debug\BuildLog.htm" 1>ati - 1 error(s), … |
| | I’m creating a Windows Form Ap with Visual Studio 2008. The Ap has a few selection boxes and buttons that trigger “things” to happen. The form also has a “feedback” area where I will display progress to the user. OK, that should be vague enough – SMILE. I want to … |
| | I have a main loop that parses winsock input. Once the parsed input has been received, it creates a thread and passes an array element id to a global array of names to the thread. The thread then downloads the requested file, but first checks to see if it already … |
| | This is codes snippet from our codes [code] void testSmartAssign() { boost::shared_ptr<int> A; std::auto_ptr<int> B(new int(9)); A = B; } [/code] Is this kind of assignment well defined? Thanks |
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