51,593 Topics
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| | I have a blackjack game(console game with visual c++), and I was wondering, how do I put in multiplayer?  |
 | Compiler: DEV BloodShed C++ (latest release) I am following this windows api tutorial and am at this step [url]http://www.winprog.org/tutorial/menus.html[/url] [CODE] //FILE: resource.h // the below code is in a resource.h file // as stated in the instructions. #define IDR_MYMENU 101 #define IDI_MYICON 201 #define ID_FILE_EXIT 9001 #define ID_STUFF_GO 9002 [/CODE] … |
| | why subscript operator ([]) must be overloaded in member function?? one may say that because it will take one argument , but operation needs two operands...one the base address and second is index(offset). cdnt it be , if cd have been treated like binary operator as well like this class … |
| | Hello everyone: I am a C++ newbie. I aim to use C++ in my work on coupled fluid flow-chemical reaction problems. I would very much appreciate some help to get me on the right track! I apologize in advance for what is probably a very simple question. My goal is … |
| | Looks like I miss something, so I need your help, guys. [CODE] #include <iostream> using namespace std; int main() { int* ptr=new int(2); const int* constPtr=ptr; int** ptr2; //... do memory stuff for ptr2 const int** constPtr2=ptr2; typedef int** intPtr; const intPtr ptr3 = ptr2; return 0; } [/CODE] Questions: … |
 | How to open c++ using the command prompt so that I can start programming in c++? Thanks!  |
| | I declared a map of the form [CODE]map<pair<int,int>,int> net;[/CODE] and inserted elements in the following way [CODE]net.insert( make_pair( make_pair(c1,c2 ),cost ));[/CODE] I could access the second element (cost, in the above code) using iter->second. But, I want to know how to access the two elements that form the first pair … |
| | I have started to learn C++ and would like to know where to go from now. I have been getting helped by MattyRobot. I have done Hello World, Input, Sqaure of Numbers, Making decisions, Cmd games, Operators, Repeated question and started to make a window. I would like some help … |
| | I am trying to read the contents from the specified file into a char array and then send that to the client. The problem i get is that getline() wont take a char array as a parameter and strcat() wont take a string as a parameter so I dont know … |
| | Write a program to assign passengers seats in an airplane. Assume a small airplane with seat numbering as follows: A 1 2 3 4 5 B 1 2 3 4 5 C 1 2 3 4 5 D 1 2 3 4 5 E 1 2 3 4 5 The …  |
| | Sorry, my first post on this forum is a question, but I'm pretty confused about this. There's a few steps in my question, and I'm confused about several. So, here we go: [CODE]baseClass *base; derivedClass *derived; base = (derivedClass *) malloc(sizeof(derived)); memcpy(base, derived, sizeof(derived);[/CODE] Would the memcpy statement work? Would … |
 | I'm trying this in Visual Studio 2005 (VC++) [CODE]#include <stdio.h> #include <stdlib.h> #include <string.h> #include <bitset> #include <sstream> #include <conio.h> #include <iostream> using namespace std; #include <time.h> string tot_msg, message, to_be_sent_msg, sent_msg, msg_to_be_sent; char * transport_layer_data_header; char * transport_layer_data_msg; bool whole_msg_sent=false; int actual_len, i, seq_num=0; char * mynode = "2"; … |
| | so i wrote a program that is suppose to have a array that has random numbers in it. sort the array, and then do a binary search and interpolation search to find the number and how many comparisons it took. i get it to work sometimes but the comparisons are … |
| | Hi, I am using the following code to open a file "Zl2WIN". [code] FileStream filestream2 = new FileStream("ZL2WIN", FileMode.Open); BinaryFormatter bf2 = new BinaryFormatter(); Person JohnDoe = new Person(); JohnDoe = (Person)bf2.Deserialize(filestream2); textBox7.Text = JohnDoe.CallSign; textBox8.Text = JohnDoe.Freq; textBox9.Text = JohnDoe.Time; textBox10.Text = JohnDoe.fName; textBox11.Text = JohnDoe.lName; textBox12.Text = JohnDoe.Country; … |
| | [CODE]#include <iostream> #include <ctime> #include <cstdlib> #include <string> #include <vector> #include <fstream> #include <algorithm> using namespace std; class letter{ private: int genre; int price; string adress; public: letter(); ~letter(); }; class parcel{ private: int genre; int price; string adress; public: parcel(); ~parcel(); }; class post{ private: letter** LETTERS; parcel** PARCELS; … |
| | i am currently making a project in Data Structures which checks similarities between two c++ source codes....i am going to use the tokenization approch to do it.... [U]but i am having trouble in finding an efficient way of parcing source code [/U]so that i can turn it in the form … |
| | Hi, i've been reading the other thread on serializing and use the following code to serialize the data in a textbox. [code] private void saveToolStripMenuItem_Click(object sender, EventArgs e) { BinaryFormatter binaryFormat = new BinaryFormatter(); Stream fstream = new FileStream("data.dat", FileMode.Create, FileAccess.Write, FileShare.None); binaryFormat.Serialize(fstream, (textBox1.Text)); fstream.Close(); } [/code] This successfully creates … |
| | Hi everyone. I'm a reta-I mean a beginner and 98% of my bugs are something really obvious... but I've checked this so much and I don't know what to do. This is my function to create an Employee object, called when the user wants to add a new employee to … |
| | I am trying to draw a hollow square and I am having a problem with nesting while loops within while loops. Is this possible? The quoted part of code is the trouble part. #include <iostream> using namespace std; int main(void) { int sides, t=2, h=0, b=0, s; cout<<"Size of square: … |
| | I have this code that uses epoll and it has a problem. When I run it, it gives output: Server-socket() is OK... Server-bind() is OK... 3 4 accept: Invalid argument I'm running it on ubuntu linux, system updated, both as limited user and root what is wrong with the input … |
| | Its showing size of type is unknown or zero [code=c++]#include<conio.h> #include<stdio.h> #include<graphics.h> #include<iostream.h> #include<math.h> int gc,gd=DETECT; int x[3][4],tx,ty,i=0; float turn[3][4]; void draw() { moveto(x[0][0],x[1][0]); for(i=1;i<4;i++) { lineto(x[0][i],x[1][i]); x[2][i]=1; } lineto(x[0][0],x[1][0]); } void rot() {double ang; float rot[3][3]; cout<<"enter the angle through which u want to rotate the figure\n"; cin>>ang; rot[2][2]=1; … |
| | I have an assignment to write an ATM program (it just needs to be basic) and I am getting one error when I try to compile: On line 28, I get an `expected unqualified-id before '{'`. I don't know that it's the only thing wrong with it, but any ideas … |
 | I made the following function for my Sudoku solver but the answers keep turning out wrong (some of the numbers are showing as doubles right next to eachother). Can somebody help please? [code=c++] void reduction_candidateLines(void) { /* * declarations */ //drives loop int k, j, x, y, z, t; //counts … |
| | /*This is an assignment for school. The main is part of the assignment. The program will work sometimes, sometimes it will not count the longest word if it is at the end of a sentence.*/ #include<iostream> using std::cout; using std::cin; // Prototype for the longest_word function that you need to … |
| | I can not get the program to read the entire sentence. The main is part of the assignment. Any suggestions would be a great help! [CODE]#include<iostream> using std::cout; using std::cin; // Prototype for the longest_word function that you need to write. // Add consts where necessary to obey the principle … |
| | Hello all and thanks for reading my post. I am trying to compile the winamp plugin NSFPlug which allows for NSF (Nintendo Sound Format) files to be played back through wniamp. I am actually more interested in the stand-alone version called NSFPlay which simply emulates winamp and uses the NSFPlug … |
| | Here is the piece of code I am having problems with. It is supposed to let me look up any items I put in the program previously. If the user did not enter a product earlier it should say "product not found". My problem is that it remembers the first … |
| | HI everyone! I'm Darkwing. Me and a crew of ppl, mostly teens :D, are willing to create an RPG named "Phoenix Dream". The thing is, i'm still learning, really, just starting to learn to program, so i'd need help from someone experienced enough to deal with 3D rendering and creation … |
| | need help! need to prevent withdraw function from occuring when savings balance is below 25. The program will run, although when the balance gets below $25 it just states "account inactive" which is fine but then the menu does not display again. This is what i have so far: int … |
| | Hi, This is basically a continuation of my last thread but under a diffrent topic. I want to be able to save basic information entered in my application as a .'help' file for example, when i open that file te information will be viewed in my application. Any ideas?  |
| | Hi, my code prints out the number of times a letter is typed. I can get it to print out the correct info, but when it deals with a white space, it will print out the list for every white space. how can I deal with this? [CODE] #include <iostream> … |
| | This is 1 of my list of project to move a mouse pointer in result window without any help from the library,header file or built in function and using only your logics.Please help me and please tell something that is possible in Turbo C++(I know Turbo C++ is a old … |
| | excuse me but i wrote this code for it could u cheek it pleaze [CODE]#include<iostream.h> int binarysearch (const int [],int , int ); const int arraysize=10 ; int a[arrayaize] ; int searchkey; for (counter=0;counter<arraysize;counter++ ) a[counter]=2(counter)+1; cout<< "enter your search key : " ; cin>> searchkey ;[/CODE] idont know what …  |
| | Not sure what's wrong... I keep gettin this error and I don't know how to solve it... error C2065: 'AveXYZ' : undeclared identifier can someone help me please? //----------------------------------- #include "stdafx.h" #include <iostream> #include <cmath> using namespace std; //----------------------------------- float Display(int x, int y, int z); float ComputeAve(int x,int y,int … |
| | Hello, I have a binary file of this format: 1st 2 bytes = total number of entries (This appears only once at the file beginning) Then each record is of the following format: 2 Bytes = Entry no. 2 Bytes = Entry category 2 Bytes = Description length n Bytes … |
 | [December] 5. Greetings and salutations! My first visit here a few weeks ago was very helpful and friendly thanks to dkalita. I’ve been moving forward on my own since then, but it appears I have run into another dilemma. I have a short program listed below. It compiles fine. The … |
| | [URL="http://www.horstmann.com/cpp/pitfalls.html"]This [/URL] is a good read. Read it and learn from it. |
| | i have no clue how to sort using the array. it is not 2d. this is what i have [code] for(int i=1; i <=num; i++) { do{ cout <<"enter score " << i << ": "; cin >> scores[i]; if((scores[i] <= 0)||(scores[i] >=100)) cout << "invalid score\n"; }while((scores[i] <= 0)||(scores[i] … |
| | I have a very simple question, which I solved yesterday but forgot how I did it today! LOL So it is like this: I have a program written in C++ which in CMD writes: " Type your name to proceed"... And in the program i set a special name, and …  |
| | I'm writing a program and right now i need to get definition of a word user enters. for example users enters a sentence : Gosh C# sure is fun. and after i split it i need to find the definition of fun. I tried fething .html of a definition sucks … |
| | hi guyz... here's a pretty silly doubt that's been lingering fr a while.. why does the following code not work?? [CODE] func() { char *s; char a='x'; char b='y'; *s=a; s++; *s=b; cout<<s; } [/CODE] the program comes to halt inappropriately on running the above... can someone please explain the … |
| | Hi, I am writing a program to store basic information such as name and address but i want to be able to store this information as a separate file. So for example i could fill out the Name as 'Mary' and then save this as an executable file which I …  |
| | HI all, First of all: I was reading about constant arrays in a book and I didn't really get the idea behind it's use or how it functions though I do understand that the values of the array items is not going to change .. help clarify this issue please … |
| | I hope this is the right forum to put this. I'm currently working on a project for school in which we need to read information from a file and then store it into an array of an object we create. The file is just a simple .txt file full of … |
| | Is there any one show me a sample code in C++ that can resize an image.  |
| | I'm currently working on a project that simplifies and adds two user-defined fractions. The teacher specified that we use a function with the prototype: [code] Fraction addfractions(const Fraction& f1, const Fraction& f2) [/code] My problem is, I can't find any information on this Fraction data type that he is making …  |
 | Hello, I have been trying to figure this out for several hours and would so so so so greatly appreciate some help.. This is the error message I am receiving when I try to compile my program.. /Barclay_Colin_Assign7_Final.cpp:393: error: no matching function for call to 'bookinfo(int&, char [51], char [14], … |
| | I have created a server and I can get it to send a simple message, but it needs to read the content out from the file (if it exists) and send the content back to the browser through socket. The reply needs to come with a HTTP header. Any help … |
| | Hi, I have a program, which uses a vector to store some pointers. The program works fine. I'm trying to convert it to use a doubly linked list now though. At the top of the program I changed: [code] vector<Diary *>vectorname; [/code] to [code] #include <list> list<Diary *>vectorname; list<Diary*>::iterator i … |
| | Hey everyone, so I am having a really annoying problem with my code. The goal of it is to be able to read a text file of an unknown length (it's more or less a class roster w/ scores) and calculate and display the average of each student. The code … |
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