51,593 Topics
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| | Hi, Is it possible (using VC++6) to change background and forground text colors when builing a simple console application?  |
| | [code]#include <iostream> using namespace std; int foreign(int x); int x; int main() { x=10; int i, j; i = 2 * x; if (i > 10) j = x / 2; return j - 1; cout << foreign(x) << endl; } [/code]  |
| | I have one file with the following tab separated records with four columns.Now I am trying to convert the file into fixed length binary file. How it is possible. in C++. rs149915 29103059 A/G + rs149932 29116347 C/G - rs149933 29123223 C/G - rs149934 29084753 C/T - rs150082 29117038 A/C …  |
| | After user choose ticket type(first class, business, or economy) and desired seat, for example row 2 A, the program will output the form: A B C D E F row 1 * * * * * * row 2 X * * * * * // now user chooses row … |
| | I've looked around and it turns out there isn't a C++ version of the java instanceof operator. I've also found out that using instanceof is supposed to be bad, for some reason. So let me tell you why I want to use this instanceof operator so badly. I've got a … |
| | I have a C++ app that uses the CInternetSession API to try and download a file across the internet. I want to authenticate before allowing any file downloads. Right now, the application should be passing the username and password using: CHttpFile->pFile->SetOption(INTERNET_OPTION_USERNAME) AND INTERNET_OPTION_USERNAME(INTERNET_OPTION_PASSWORD) Is there any way to connect this … |
| | hi all , i have two arrays say : a[] = {"abc" , "def" , "ghi"}; b[] = {"abc" , "def" }; now i would like to find out the difference i.e "ghi" ..without using nested for loops. |
| | please help me in finding what is wrong with my array... its not sorting thanks, thanks. [code=c] int main(){ int i,j,x,y; int unsort[10] = { 34, 76, 12, 1, 56, 23, 65, 9089, 45, 63 }; //int sort[10]; for (i = 0; i < 10; i++){ cout<<unsort[i]<<" "; } for … |
| | I am working on a code focusing on Inheritance in C++. I am getting some errors regarding the lines that read: [icode]void bat :: double travel_time (double distance, terrain_type t)[/icode] (lines 56, 68, 113, 125 in animal.h file) The others that begin with void penguin, mammal, and bird have the … |
| | I have been trying to make a program that uses derived classes but have run into a problem. I get the error type: " error C2440: '=' : cannot convert from 'const char [16]' to 'char' " when I try and intialize a char array of 255 to "Name Unknown" …  |
| | Hello, I need to prompt the user if they want to actually execute the program or not. Like, "Do you want to run the program, y=yes and n=no" Then user enters y or n and the program either runs or quits. I was thinking that would be like: [code] char … |
| | I am trying to run one program using GNU compiler GCC 3.2.3. *i am seding u *partial code of my program and the compilation error i am getting. [code=cplusplus] #include <iostream.h> #include <fstream> #include <iomanip> #include <stdio.h> void fileinput(); int m,n, k, r; * main() {} void fileinput() { *int … |
| | hello again, can somebody explain to me how I can use c++ idea to make my own DLL DRIVERS or a better tutorial link on that,it's very urgent...i have to submit before this thursday......please make it snapy |
| | hello ppl im new to C++ i was making a small newbie math quiz.. and was wandering how can i make it that at the end it says how much u got out of 10 or watever this is my code so far [CODE]#include <iostream> #include <cstdlib> using namespace std; …  |
| | Can someone please take a look at my code to ensure there aren't any memory leaks or (array) overrides or anything else which could be a bad practice in my code ... Here's my code: [CODE=C++] #include <iostream> using namespace std; template <typename T> void create2DMatrix(int rows, int cols, T … |
| | Hey guys, I need help with this program which I have a function that calculates this formula for total house cost and then have an instruction function that asks for the input, then in main has the output. Can anyone tell me waht I am doing wrong, I think I … |
| | Hello there people, I'm trying to create a backgammon game using C++ and I am getting an annoying error error C2228: left of '.length' must have class/struct/union Here is the code it is refering to diceArray = new int[4]; for(int i = 0;i<diceArray.length;i++) diceArray = d1; I have declared diceArray … |
| | Hey was just wondering if there was a way I could share the private data with another class, without including it as a object of that class, for example, i have 2 classes, class A and blass B. class 'A' reads in from a txt file and stores its data … |
 | Help me to implement file concept in this problem , i want to save the structure data to a file and Display from file.Please help me. [CODE] #include<iostream.h> #include<string.h> #include<iomanip.h> #include<dos.h> #include<conio.h> #include<stdio.h> #define max 20 struct employee { char name[20]; long int code; char designation[20]; int exp; int age; … |
| | I was testing which constructors are called in when a derived and then base class objects are created. My program couted 0 if it was the base class and 1 if it was the base class. I ran it and it returned 01 for the derived class and 0 for …  |
| | Hello, I am reaally green to C++ 1. I am trying to create a code that calculates and then produces a small invoice. Input: Company Name Input: Account Number Input: Opening Balance Input: Account Type: I=invoiceReceived P=invoicePayment #endTransaction Input: Amount Invoiced Input: Amount Paid If someone with experience were to … |
| | I have been up for 24+ hrs, and am failing to see where I'm getting these junk numbers from? I know it's staring me right in the face, I just can't see it for the life of me!! Keep in mind this code is ugly and may make your eyes … |
| | Please help me with this code! Here is the assignment. Project Specifications: Each part of this assignment is a piece of the next part--it builds upon itself. You should submit each part as a separate program. But, the final program is a complete program built upon all the other parts. … |
 | how do i exicute python scripts in a c++ program? and what uses would it have?  |
| | Hi folks, I tried to read some past threads in this forum but I didn't find one that solves the problem I'm dealing about. I have experience with Java/OO programming and I'm developing a project using C++ (I have some background with C/C++ programming but I'm messing around some issues … |
| | I am trying to write a pretty straight forward algorithm (agglomerative clustering), but the details are getting pretty hairy. (A cluster is simply a group of points. The idea is to take a list of points and decide which are "grouped" or "clustered" close together.) Here is the outline: Input: … |
| | Hii everyone:) I have written this code to do conversion between decimal to any base between 2 and 26.... But this is not working properly ca any one help me:confused [CODE] #include<iostream.h> #include<conio.h> void conversion(int no,int base) { int arr[10]={0}; int i=0; while(no>0) { arr[i]=no%base; i++; no=no/base; } for(int j=i;j>=0;j--) …  |
| | I writing a program to read several data lines in from a file then using functions to process the data. One of the function is giving me an error that i can't figure out. The following code works fine with "1/2". However there is a case when the '/' sign … |
| | I'm making a game and the game works around a class I call Cyber_State. Every state of the game is a subclass of Cyber_State, for example the title screen you see when you start the game and the actual game. Every state has a member that is a pointer to …  |
| | On the line [code] set<T>::iterator iter; [/code] I am getting "expected ';' before 'iter'" [code] #include <vector> #include <set> using namespace std; template <typename T> vector<T> UniqueElements(const vector<T> &V) { set<T> s; s.insert(V.begin(), V.end()); vector<T> Elements; set<T>::iterator iter; return Elements; } [/code] Can anyone see why? It compiles fine if … |
| | I'm working on a rather big program. Everything works fine:) , until I added this simple code: [CODE]int counter_x = 0; int* x = new int; for (int a = 1; a < plain_len; a++) //plain_len: int { int b = a; while ( b != 0 ) { x[counter_x] … |
| | My textbook says "Constructors cannot be virtual. (Think about it: constructors are called to create new objects. However, if you don't know what type of object you're trying to create, how do you know which constructor to invoke?)" but I am not sure what it means by this. Is it … |
| | Hello all, I am trying to make a linked list (class-based). I'm not sure if I went actually did it right. I get a compiler error on the segment of code that deals with printing the linked list to stdout. Here is the seqment in question. [code=cpp] // print contents … |
| | What I wanted to ask is if its possible to insert a Combo Box inside a Splitter window ? I am not sure if this question is incorrectly posted in this group. Any resources would be greatly appreciated. |
| | Hello I have been trying to understand virtual functions for a while and when I made a program to demonstrate the use of virtual functions it didn't and someone gave me this piece of code that would demonstrate the proper way to utilize a virtual function: [code=c++] #include"derived.h" #include<iostream> using … |
| | Hello Everyone. Having some problem with coding, and hoping that someone could help. I have a text file with input delimited by spaces. Something like this: TGP C 18 3.90 4737 JWW B 25 6.5 9630 Now I can open and read the file. Now I am trying to get … |
| | Hi, I am getting the following error when I am trying to initialize a 2 dimensional vector with 0's. I am not to figure out the reason. Any help is appreciated. [ICODE] std::vector<int> truth_table; std::vector<vector<int> > truth_table_col; double no_of_twos = 7; double base_two = 2; cout << "No of 2's … |
| | Hi again! I'm having problems with an assignment once again. It's asking us to write a program that takes in a phone number as a string in the form of (555)555-555. We're then to use the strtok_s function to split the phone number into the area code, prefix, and then … |
| | Hello, I'm working on a school project, and I'm so lost i can't even figure out how to start it. What I'm trying to start off with is just a simple console application that gets these settings: program.exe [switch] [path] [filespec]. how can i accomplish this? This is what i … |
| | Hi there! I keep getting an error stating error: expected unqualified-id before 'bool' when I try to compile this file [code=C++] #include "Data.h" #include <iostream> Data::Data() { } Data::Data(char aLetter, int anOrder) { letter=aLetter; order=anOrder; } Data::~Data() { } ostream& operator<< (ostream& out,const Data& someData) { out << "(" << … |
| | I have a very simple program, a console application, that I wrote a long time ago under VS 2005 under XP. It worked perfectly OK. The program gets names and in the end prints them on the screen, until I do not enter a new name but only CR to … |
| | hi, where can i get all or most of the libraries for c++ and where do i place them?.....one more thing.....i have visual c++ how can i find out what libraries i already have...i dont see any library folder in the main folder....thanks |
| | I perhaps have to resort to multiple thread programming to reduce computational time. I am now studying how to use POSIX library. I can access a cluster with 8 CPUs, each of which has one core. I was wondering how many threads to create would get approximately best time performance … |
| | just out of curiosity (definitely not because i have a deadline tonight lol) how does a plagiarism detecting software work? any ideas? i'm pretty sure the program compares run time... for example if i create an array in main [code] main(){ //create array and add numbers } [/code] then in … |
| | im working on the following program, #include <iostream.h> #include <math.h> void main() { float x,y,z; int s; bool b; cout<<"x"<<'\n'; cin>>x; cout<<"y"<<'\n'; cin>>y; cout<<"s"<<'\n'; cin>>s; if(x==y) z =0.9; else z=0.8; cout<<"z="<<z<<"\n"; b=s%100; cout<<"b="<<b<<'\n'; x=3; for(int i=1;i<=3;i++) { x*=2; cout<<" "<<i<<" "<<x<<'\n'; } } and it gives me 3 warnings: truncation … |
| | Hey guys, i am very new to C++ but i know some little things about it. I am trying to make a simple dos program with simple arithmetic but i forgot how to do some things since it has been ages since i last coded. I am trying to make … |
| | i am making a list template for a tutorial, heres the code: [code=c++] template<typename t> class list { int sz; t elem; public: list() : sz(0), elem(new t[0]){ } list(int i) : sz(i), elem(new t[i]){ } list(int* i, double val) : sz(i), elem(new t[i]) { for(int i=0;i>sz;i++) elem[i] = val; … |
| | Hi! I was hoping for some advice on how best to create a single doubly-linked list which could contain all of the different types of classes I have. This is the code I have written so far.... [B]shape.h:[/B] [code=C++] class Shape { public: Shape (int l=0, int h=0) : length(l), … |
| | i need help on some code im having trouble with its an x and o ai i havent finished the strategy function. im running a linux os and i need help with a segmentation fault also some help to make the code better would be appreciated //dtai-II //concept by temi … |
| | Hi guys, I am going mad. I am trying to code an algorithm in C++ and already at a very early stage there appears an error that I just don't understand... These are the error messages sent by the VC++ compiler: [code] \surface_watershed_matlab\surf_watershed.cpp(138) : error C2653: 'CMesh' : is not … |
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