49,766 Topics
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| | 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 … |
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