51,593 Topics
 | |
| | Hi! I wrote two functions in order to access two private data members of a template class and I got the messages in the title every time I call these functions(getNcols(), getNrows()). I'd be very grateful for your help, guys... (Without the "template<class T>" before the friends, I got linker … |
| | When i runt he code and try to get the size of the 2 files something goes wrong with the msgIn file. I'm using the same method for both files and the bookIn will work but msgIn just returns 0 as if it never ran. this is the method that …  |
| | Hi, does anyone know what the message 0xc088 is? My PeekMessage(...) loop is getting this message code, but I cannot find it in the header files (grep'ed c088). It seems to be intersperced with WM_PAINT messages.  |
 | Im trying to get my program to list certain types of drives etc but i dont know all the drive type names like "DRIVE_REMOVABLE" or "DRIVE_CDROM". does anyone have a list of the entries? |
| | I'm trying to get a char back from the bookFile.txt but, when i run the program it returns nothing. I'm not sure if .get() if the right thing to be using. When i run this code i get the random number and the first letter of the msgFile.txt returned correctly. …  |
| | I have a project where I have to analyze 3 different hashing functions. I cannot get the cyclic shift hash to work with a bitwise OR. Everything looks fine to me am I doing something wrong? [code=cplusplus]int Hash::hash(string key) { unsigned int h = 0; for(int i =0; i < … |
| | I understand the structure of a do while; however, when I start plugging in my statements, I am not gettng the result I want. The logic is wrong. Knowing the general form of the do while is: do statements while (condition) and wanting to write a do while code to … |
| | Hi Guys, I'm trying to write a simple game of drawing rectangles and circles in a window. I've created a different class for each shape: RectClass and CircClass. Each of these classes has it own DrawShape() function which suppose to draw the shapes in the window with given coordinates argument. …  |
| | Create a function w/c accepts as input the double numbers x1,x2,x3 and returns to the program the value of the average (x1+x2+x3)/3 as a variable parameter. #include<stdio.h> #include<conio.h> main() { i really dont know what next........... |
| | I've been working on a program and have hit a roadblock. I know conceptually what to do, but I'm having trouble implimenting it. Ok, so what it's suppose to do is take them randomly generated numbers that have been put in arrayints and factor them. This right now for an … |
 | i have a problem with curses my program is working properly, but when i include curses.h, it produces errors i can't understand.. [icode]classmates.erase(classmates.begin() + i);[/icode] and the error is: [COLOR="Red"]macro "erase" passed 1 arguments, but takes just 0[/COLOR] and [COLOR="Red"]statement cannot resolve address of overloaded function[/COLOR] if i remove curses.h, … |
| | I need some help with Binary I/O. I know how to do it when I am specifying the filename in the code ie: [icode] fstream fio("persons.txt", ios::in | ios::out | ios::binary | ios::trunc); [/icode] What I need to know is how to open or create a file with a file …  |
 | hey friends, here is a code that I made to find the prime numbers in an array.. What the program is supposed to do is check whether the number is PRIME or not.. The position of the element is specified and the program finds and check the element in that … |
| | Hello guys, I'm very green in c++ and just started to understand classes and objects. I'm reading on the web about this pointer, but having difficulties understanding how it works exactly, could aanybody please help me understand or reference a good article for total noobs in c++ to grasp the … |
| | hi all pretty new to programming here the idea of the code is for the function to take in an string and an int and to pad the string with space on the left with the int being the number of space to put in. am i doing something wrong? …  |
| | The problem that i am working asks to calculate a customer's monthly bill. The customer has to input their name, which package they purchased, and how many hours were used. For example package a is for 9.95 a month 10 hours of access provided. Additional hours are 2.00 per hour. … |
| | Hi again people. I am stuck on this array that converts lower case letters to upper case letters. I need to find out how to make it not display strange characters after the letters are entered. I know it has something to do with the 'null' terminator, but I am … |
| | I am having trouble with the remove() function in this avl class. When I run the test below in my main my debugger tells me "there is are not enough frames in stack" pointing to the line [code]t->height = max( height( t->left ), height( t->right ) ) + 1; [/code] … |
| | Hello, I'm currently taking a programming class in college for my first time and I am having a hard time with my assignment for the week. I have to write a program that I create a class called Student. It will then have two members within the private sector called … |
| | Hi .. anyone can help me out to solve this problem... coding to read the file... 1. this coding is well working... can list down all the data in dataM.txt [CODE]ifstream OpenFile("D:\\dataM.txt"); int a; if(!OpenFile) { cout << "While opening a file an error is encountered" << endl; } else …  |
| | hi all, when i run this code (quick sort), i ll get ascending order as output... now i want descending order instead... anybody know how to altert this code..uhuhuh [CODE]void QuickSorting::sort(int a[], int lo, int up) { { int i, j, pivot; while ( up>lo ) { i = lo; … |
| | [CODE]int write() { system("cls"); char text[2000]; char thing[100]; cout << "which file would you like to write to?"; cin.getline (thing, 100); cout << "what would you like to write? (up to two thousand characters)"; cin.getline (text, 20000); ofstream file; file.open(thing); file<<text; file.close(); system("pause"); return haha(); }[/CODE] ok so I'm writing …  |
| | [CODE]#include <iostream> using namespace std; #include <iomanip> #include <cstdlib> enum RequestType { ZERO_BALANCE = 1 , CREDIT_BALANCE, DEBIT_BALANCE,END} int getRequest(); bool shouldDisplay ( int, double); void outputLine ( int, const char*const, double); int main () { ifstream inClientFile( "clients.txt", ios::in); if ( !inClientFile) { cerr << " File could not … |
| | hi all. in a recent project i created a linked list to store a students course data...such as course ID, year taken, semester taken, and final grade. This program worked without any problems. now, my next project is to create a stack to store the data, instead of a linked … |
| | hi can anybody please expalin me that can i access the array(arr) which is declared as a private member of the class(array) by using public function (display). The code is given here... [CODE=c++]#include<iostream.h> const int size= 8; class array { int arr[size]; int i; public: array(); void display(int arr[size]); }; … |
| | [CODE]#include <iostream> using namespace std; #include <string> class Engine { int power; public: Engine() {power=0;}; Engine (int pIn) { power = pIn;}; void show (); float getPower () {return power;}; }; void Engine::show() { cout << " This is an engine have a power of " << power << " … |
| | Hello I want to write a program in c++ to convert certain rows which i can choose from a table in excel to .csv. Anyone done anything similar? I am not sure how to do this, still thinking, any suggestions. |
| | // days in a given month.cpp : Defines the entry point for the console application. // #include "stdafx.h" #include <iostream> using namespace std; int _tmain(int argc, _TCHAR* argv[]) { char month,january,feburary,march,april,may,june,july,august,september,october,novemb er,december; cout<< "\nEnter january,feburary,march,april,may,june,july,august,september,october,november,dec ember : "; cin>>month; switch(month) { case january: cout<< "31\n"; break; case feburary: cout<< "28\n"; … |
| | This function is supposed to open a file stream and copy the text into an integer array to be used for a map key. Here is the contents of the file. I am getting the decimal value stored in the array and I just cannot figure out how to correct …  |
| | i have this program generating 3 numbers and i don't know how to take those 3 numbers (i.e. 777) and applying that to a switch/case like... [code=c++] switch(landing) { case 'a'://777 //calculation will go here break; case 'b'://666 //calculation will go here break; ///and so on and so on! } … |
| | Heya, I'm trying to slim down some code by using a for loop, but the only way I can do it is by building a variable string to put in the format bit. [CODE=C++]for (n=0; n<13; n++) { strTmp.Format("%ld", pFrame->m_pAppWnd->state.Variable); strBuf.Replace(saveloadtypes[n], strTmp); }[/CODE] pFrame->m_pAppWnd->state.Variable fetches strings from another .cpp file. … |
| | Hi! I made a visual c++ application. My problem is how do I run the program in the console. And the program should read the data from sample.txt file |
| | Hi, I was hoping that someone could give me some direction with how to solve this probem. The only info in this problem is word has N digits[only digits] and each digit in the word is in increasing order example 1469 or 362 I have to verify if the number … |
| | hello everone i'm new to c++ language Is This possible to make prg in cpp to overload () Opratore if yes, then can u pls give any logical flow for develope the prg i.e. which kind of opeartion can be performed through () opratore thanx in advance  |
| | how to add graphics library to Turboc++5.0 so as to run functions like circle(x,y,r); I am using XP sevice pack2. Plz help me. thanks in advance  |
 | I get the size of the integer array by using sizeof operator but the problem is: + Outside class: It outputs 3 (correct) + Inside class: It outputs 1 (incorrect) So how to fix it? Thanks [CODE]class A { public: A(const int a[]); }; A::A(const int a[]) { cout << … |
| | I am writing an implementation of a DES encryption with a 64 bit plaintext, taken from the pixel information in a BMP file. So I want to skip the header which is 54 bytes, but I am not sure how to do this. This will not be a dynamic project, … |
| | hi all its me again, i just added a replace function but its throwing error C2661: 'std::basic_string<_Elem,_Traits,_Ax>::replace' : no overloaded function takes 2 arguments. any idea? [CODE] #include <iostream> #include <string> using namespace std; string padBlanks(string, int); void removeLetter(string&, char); int main() { string string1; int padN; string inStr; char …  |
| | Why is this array not printing in 2D? [ICODE]#include <iostream> #include <iomanip> using namespace std; const int COLS = 5; const int ROWS = 5; void showArray(int [][COLS], int); void arrayDef(int [][COLS], int); void totalCol(int [][COLS], int); void totalRow(int [][COLS], int); void totalDiag(int [][COLS], int); void inputAmt(int [][COLS], int, int, …  |
| | I'm new and I don't want to waste anyone's time, but I searched and found nothing on this. I am to write a simple CRC-16 routine. My compiler (microsoft) will not accept a char[] as an operand when I try to execute the xor. char msg[5] = {'A','B','C'}; int generator … |
 | i need to create a palindrome program. in our computer lab, this program works but here at home, it doesn't. help.. [CODE=c++] #include<iostream.h> #include<conio.h> #include<string.h> #include<stdio.h> int main() { clrscr(); char word[20],rev[20],chr; cout<<"This porgram checks if the word is a PALINDROME word.\n"; do { cout<<"\nEnter word: "; cin>>word; for(int i=0,j=strlen(word)-1;i<=j,j>=0;i++,j--) … |
| | I've never programed in C++, and I have just started to learn C++, but I already get a little bit to complicated homeassignement. Is there anyone willing to help me - let's say solve me this excercise. I would appreciate any help with this and if there is anyone willing … |
 | Hi, im reding a book where the way it draw poligons are like that: [CODE] glBegin (GL_TRIANGLES); glVertex3f (0.0f, 0.0f, 0.0f); glVertex3f (0.0f, 1.0f, 0.0f); glVertex3f (1.0f, 1.0f, 0.0f); glEnd(); glBegin (GL_QUADS); glVertex3f (0.05f, -0.05f, 0.0f); glVertex3f (0.95f, -0.05f, 0.0f); glVertex3f (0.95f, -0.95f, 0.0f); glVertex3f (0.05f, -0.95f, 0.0f); glEnd(); [/CODE] … |
| | I'm working on this program for my C++ class. It works fine but I'm not quite happy with it. Basicly this accepts a string, pulls each character out and converts it to the COA equivalent. It reads the entire string including spaces, but I can't seem to get it to … |
| | Hi guys. I was wondering if you could help me with this problem. I am trying to pass a dynamic array to a function for finding the length [code] int length(char ** t, int i) { int count = -1; do count++; while (t[i][count] != '\0'); return count; }[/code] The … |
| | 'lo there folks, MinGW's giving me 1 error I can't get rid of: [code] eventhandler.h|9|error: `element' has not been declared| eventhandler.h|9|error: ISO C++ forbids declaration of `elem' with no type| [/code] All code mentioned and I think needed: eventhandler.h [code=cpp] #ifndef EVENTHANDLERH #define EVENTHANDLERH #include "element.h" enum events {onClick, onHover}; … |
 | so say I have something like this: [code=cpp] #include<iostream> class A{ public: void setErrorMessage(char*); } void A::setErrorMessage(char* errMessage){ // code here to set B::errMsg } class B{ public: A someObject[3]; char* errMsg; } int main(int argc,char** argv){ B something; B another; something.someObject[2].setErrorMessage("BIG ERRAR!"); another.someObject[0].setErrorMessage("everything's okay!"); cout<< something.errMsg<< endl; cout<< another.errMsg<< … |
| | Hi I have been working on a project that requires me to be able to search a file for all occurrences of a string and store the entire line that contains a single occurrence of that string a an array of characters. For example: Search: web File: Time James [U]Web[/U]ster … |
| | If I do this, I get "warning: address of local variable returned". [code] unsigned char* CharArray(void) const { unsigned char arr[3]; arr[0] = R_; arr[1] = G_; arr[2] = B_; return arr; } [/code] So the reason for that is that the memory allocated for arr[] is only available within … |
| | i need help using the following .h file to Write a definition of a member function void complementSet(); which for a set A, the complement of A is the difference of U-A, where U is the universe set. Would the universe set be the monthsSet istself?? Thank you all very … |
The End.