51,593 Topics
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| | Hi , is it possible to transform the following code to math [code=cplusplus] int F( int n ) { int r=0; int mid=n/2; for( int i=0 ; i<n ; i++) { if( i<mid) r+=1 ; if( i==mid) r*=2 ; if( i>mid) r=pow(r,3) ; } return r ; } [/code] and …  |
 | Hi. I have a program that goes a little like this: [CODE] // Include files, etc... int main() //code... [COLOR="Green"] if (input == "logout"); { return main(); } [/COLOR] // rest of the code [/CODE] Now, every time the program goes to main, the values previously stored in the varibles …  |
| | How do I pass this function if int &pos(void) - returns the element at "position" by reference my method in class definition: int &pos(void): my function is [code] int dequeint::&pos(void) { return CurrPos->x; } NodeValueType dequeint::front() { return headi->x; } [/code] but i get this compiler error expected unqualified-id before …  |
 | Well, I don't know if this is what you would call an anonymous function, or "Lambda" function I guess, I haven't really gotten that far into languages that use them yet... but, I am writing a function that is rather long. And I want to just get through it, and … |
| | Greeting all, Peace. I had this error [QUOTE] error C2059: syntax error : ')' [/QUOTE] in VS with c++ code, and searched the web and forums for a solution but could not find one. Finally I simply typed in the bracket ")" in the "find key" to search for all … |
| | I am trying to sort an array and eventually get the 'n' closest numbers to the position the user chooses but i can't get the sort function to work first. Here's the code: #include <iostream> //for standard I/O #include <iomanip> //for setw(), etc. #include <cstdlib> //for rand(), srand() #include <ctime> …  |
| | I have a name mangling issue with a C++ static library that was created using VS 6.0. I'm trying to write a wrapper DLL using this static library, but i'm having trouble accessing the functions of this library due to name mangling. My compiler (VS 2005) shows this for a …  |
| | [CODE]//Tic-Tac-Toe #include <iostream> #include <iomanip> using namespace std; const char COL = 3, ROW = 3; typedef int tttb[ROW][COL]; //tttb tic-tac-toe board bool winner(tttb, int,bool); //funtion name winner bool move(bool); int main() { bool isWinner; isWinner = false; cout<<"isWinner= "<<isWinner<<endl; isWinner = move(isWinner); cout<<"isWinner= "<<isWinner<<endl; if (isWinner = true) { … |
| | i m making a hotel database management system and i have to add records, update and delete them.i m having problem in getting the input,how will i use double pointers?? and i have to get a certain number of records from the user. here is my code: [CODE] void addcustomer() …  |
| | Ok, apparently my destructor isn't done yet and I'm not sure how to handle this. I have an n-ary tree that contains nodes that are built of data and a vector of pointers. Each pointer was initialized with new, so I need to delete them obviously. One friend said I …  |
| | I'm trying to write a stack implementation that makes use of a single link list. The new Stack implementation can inherit from stackADT which I previously used with an array opposed to the link list I want to make use of now. Here is the stackADT [CODE]#include "StackADT.h" StackADT::StackADT() : … |
| | Hi, I'm trying to count files in a desired directory using MFC... I tried the following code: [code] int CountFiles(const std::string &refcstrRootDirectory, const std::string &refcstrExtension, bool bSubdirectories = true) { int iCount = 0; std::string strFilePath; // Filepath std::string strPattern; // Pattern //std::string strExtension; // Extension HANDLE hFile; // Handle … |
| | People, someone knows if there is a client/server chat for mac os x ? i need the source code pleaseee !!! in c ++ |
 | can someone tell me whats wrong with this codes, because there's some error in printing.. [CODE]#include<stdio.h> #include<iostream.h> struct bday{ char month[2]; char date[2]; char year[4]; }; struct contacts{ char surname[10]; char phoneno[12]; }; void main(void) { struct contacts con[2]; struct bday bd[2]; int i; for(i=0;i<=2;i++) { cout<<"\nSurname : "; cin>>con[i].surname; … |
| | I just started studying structured programming and I was trying to do a If Else then function but the compiler won't let me compile it? #include <iostream> using namespace std; int main (void) { int age; cout << "Enter your age" << end1; cin >> age; if(age > 21) { …  |
| | I need to create a search function that search for a product type. If it's found, I return true, otherwise i return false. My client program will output the data that was found (if true), otherwise it'll output an error message saying that product type does not exist in the … |
 | Hey In VS, you can in a struct do: [code] struct test{ int tes; }tt; [/code] then when I put tt., it would display the all fields in a tooltip which in this case would display tes. Is "IntelliSense" (I know it is not called that) in wxDev-C++? |
| | Hiii I am developing one window application in c# and .net with sql server 2005 as database. now, i have Four questions: 1] I have one dropdownlist in form and i want to fetch the content/data of table category in to this dropdownlist and when I run this form on … |
| | I'm trying to convert a string to an integer and store it in the same variable multiple time through a loop. For some reason it never works after the first time, it screws the number up. [code] #include <stdlib.h> #include <string> #include <iostream> #include <cstdio> #include <sstream> using namespace std; …  |
| | I'm dealing with a map of vectors, and I'm making sure I clean up all the memory used. So, what exactly is the best way to handle this? One person said to use clear() on each vector in the map and then use clear() on the map, but I don't … |
 | Hi, I alredy got it to work, but I did things that I figured out by debugging it, and I dont understand very well what is happening.. So..I trying to read a file header( its a ppm image file), here is a commom one: [CODE] P3 # example comment 512 … |
| | I have a question here: Complete a program that performs following operations by using C++ programming: a.Enable user to create and manipulate a list of items (must be able to read integers, characters and strings). b.Enable user to sort the list. (any sorting algorithm except naïve sort) c.Enable user to … |
 | Hey guys, I have a function that compares two dynamic arrays and returns true or false if they're identical. [code=c++] bool Identical(QueType que1, QueType que2) { if (que1.IsEmpty() != true && que2.IsEmpty() != true) { cout << "in loop\n" ; ItemType tmp1 ; ItemType tmp2 ; que1.Dequeue(tmp1) ; que2.Dequeue(tmp2) ; … |
| | i m getting a runtime error and the program skips the first attribut i.e name,and gives a runtime error at the second one.compiler gives some warning about gets".\Assignment 3_Question 4.cpp(118) : warning C4996: 'gets': This function or variable may be unsafe. Consider using gets_s instead. To disable deprecation, use _CRT_SECURE_NO_WARNINGS. … |
| | i m having so many problems,i m trying to make an hotel database management program in win32 console and i m not allowed to use structures,only variables or pointer or Dynmaic arryas. i m using 2d dynamic array,i have to pass it to a function to store values in it,i … |
 | How do you find the length of an int array?? I have int array with some values and I need to count how many values are there? I tried a lot of things like strlen(); sizeof(); etc.. [code=c++] int main() { int iarray[10000]; // Now I have a lot of … |
| | Hello, I posted a program about converting furlongs to kilometers and other conversions concerning those 2 main units. These errors kept popping up: error C2027: use of undefined type 'Kilometer' see declaration of 'Kilometer' error C2228: left of '.getkilometers' must have class/struct/union error C2027: use of undefined type 'Kilometer' see … |
| | Hello, I have been working a week on this program with this stupid bug that gives tons of errors. I have narrowed them down to 4 errors and 2 warnings but I have no idea how to fix the 4 errors. The program is supposed to have two user defined … |
| | Hi guys, i am working on a bank program for school but i am running in to a small problem. when the program starts up its displays a menu such as: item 1 item 2 item 3 And say if you click item 2, it will do waht ever it … |
| | Well, today I had my C++ viva at my school..and I screwed it up!! The answers to this question which I was asked may be easy but I couldn't get it..Few questions of which I haven't got the answers yet-- 1. [CODE]class A { public: int a; int b; };[/CODE] … |
 | Quick question (hopefully). I have a vector of strings and need to remove duplicates. Normally, I'd just use sort, erase and unique. However, I don't want to sort the data. My idea was to copy the vector to a set, then back to a vector. But every attempt just screws … |
| | Hi, I use the code below for an bitmap image and it works great. The only problem is after I use system("cls") or when the scroller goes down it cuts the image. I use compiler Dev-C++ and my OS is Windows XP and I have also vista. I was thinking … |
| | cant display the correct value of the structured values with function ... is it got to do wif some buffer stuff ??? [code] #include "stdafx.h" #include <iostream> #include <iomanip> using namespace std; const int MAXCHARS = 15; const int NUMEMPS = 1; int i; struct EmpRec { long num; char … |
| | i am a final year student doing a project in brain computer interface. i need to know if we can control the mouse cursor movement using c++. that is if i want to move the mouse cursor in any direction that is right left up down, of any magnitude but …  |
 | If I use the uncommented 3 lines for getting an int out of a stringstream, the value in MPV is wrong. However, if I make a new stringstream, then it works fine. I thought setting .str("") was essentially resetting the stringstream? [code] line = ""; getline(fin, line); //get fourth line … |
| | When checking my code with PC-LINT it advised me to make some member-functions const What is the advantage of doing this ? |
| | Hi, I am facing a problem with allocation of two dimensional char array. The problem statement requires me to get the number of rows and columns of the array from a file. I have saved the rows in "rows" and columns in "columns", both of type int. Here is how … |
| | Hi everyone, How do you define two structs that include lists of or pointers to each other? I've tried including a forward declaration of one, and neither way works. Any help getting around this would be great, thanks in advance! [code=c++] // struct arc; struct node { Vector<arc> arcs; void … |
| | For this program I am supposed to add two numbers together, up to 20 digits, using arrays...i have most of it working but i cant figure out how to solve the carrying over problem when the two numbers added are greater than 9....here is what i have so far [code] … |
| | Hi all, i made some java few time ago and i'm now studying C++ here is a simple program i've been working on to learn about it but the fact is for some days now i can't figure why it doesn't work... in fact i just want to create an … |
| | [CODE=cplusplus] bool BODYTYPE::Seek(BODYTYPE * body) { string line; string key(body->style); size_t found = ' '; fstream file("..\\Data\\BODYTYPE.txt",ios::in); if (!file.is_open()) { cout << "Unable to open file \n"; return false; } file.clear(); file.seekg(0); for(;getline(file,line);) { if((found = line.find(key,0)) == 0 ) { file >> body->style >> body->doorCount; return true; } } … |
| | [CODE=cplusplus] // using pointers with // const methods #include <iostream> class Rectangle { public: Rectangle(); ~Rectangle(); void SetLength(int length) { itsLength = length; } int GetLength() const { return itsLength; } void SetWidth(int width) { itsWidth = width; } int GetWidth() const { return itsWidth; } private: int itsLength; int … |
| | Hi guys, I am trying to learn this fantastic language. My question is Does Structure in c++ contain default constructure and destructure. And when we allocate memory for structure by new operator like Struct special { int x; int y; }; special = new special; Then if special going to … |
| | Hello i have an array of dates and want to input a week ex week #14 and get all the dates written out in that week. Anyone know a good way to convert weeks to dates or how i should solve this? thx for answer. |
| | Hi, I'm new here and need some help on beginning my program. I've read the thread on homework help and am not here asking for someone to do my program. I have an assignment which I basically have to take in polynomials from the user and add/multiply them. I decided … |
| | Hi all, I'm new here. Hello! I am a new comp. sci major and am required to take a beginning course which we learn c++. So far I've been hanging in, but I don't have the greatest teacher to learn from. I've had no formal programming language training. I've actually … |
| | a percent sign? My program asks the user for a percentage rate. It then puts (with cin) the rate into a double. However...if a user tries to type a % after he enters a number...the program goes wack... |
| | I have a question regarding when to use delete to free memory used by a pointer. I have a class function that uses dynamically allocated memory and I want to properly use delete to free up the space when I am done with it. [code=c++] // Overloaded addition operator. CSimpleString … |
| | I'm trying to simulate the spin of a slot machines [reel1][reel2][reel3] so they look like they are in motion. i'm getting this error: Error 2 error C2678: binary '==' : no operator found which takes a left-hand operand of type 'std::string' (or there is no acceptable conversion) [code=c++] //rotation of … |
| | [code=cplusplus] #include<fstream.h> #include<stdio.h> #include<conio.h> #include<string.h> #include<iostream.h> #include <stdlib.h> #include <stdio.h> #include <conio.h> void deposit(void); void addrecord(); void delrecord(); void modrecord(); void disprecord(); void dispall(); void withdraw(); float w,z; class account { int accountno,cls; char name[30],type; float deposit,withdraw; public: account() { deposit=withdraw=0; } int giveaccountno() { return accountno; } void getdata(int … |
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