51,593 Topics
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| | I am trying to write a program for my class and ran into these errors. I don't know where the issue is and was wondering if any one could help. The project consists of a header, implementation, and source file. These are the errors that I am getting: 1>DivSales.obj : … |
 | hello im a hobbyist who is somewhat new to c++ with lots of experience in python. in python i was able to use dictionaries that could be accessed by keys and values with no limits on data types that can be stored but now im trying to port a simple … |
 | In the program below I need to get month to hold the first two digits of date, day two hold the digits 3 & 4, & year to hold the last four digits. Any idea on how I can accomplish that? #include <iostream> #include <string> #include "functions.h" int main() { … |
| | Is my functions correct? If I type in the highest temp at the bottom row, my program wouldn't take it. Same goes for lowest temp. Can anyone provide some in sight? #include <iostream> using namespace std; //declare constant for array temperature int const row = 3; int const col = … |
 | C++ conversion of [this C snippet](http://www.daniweb.com/software-development/c/code/445012/simple-interactive-menu) for a simple interactive menuing system. The code shows three files: * menu.h: The header file for the menu class. * menu.cpp: Implementation of the menu class. * main.cpp: A sample driver that uses the library. The menu library is fairly generic in that …  |
| | In the following program, when I enter a number I'M getting strange output back. When I enter 5 I get 0x6011a85 back on the cout << "you entered" line. #include <iostream> //#include "functions.h" int main() { std::cout << "Please enter a number. " << std::endl; int date = 0; std::cin … |
 | How do you normalize 16 bit PCM audio 44100Hz mono? I have the raw data, but don't know what to do with it, it is signed as far as I can tell. |
 | in this code i am counting the number of bits present in the numbers from 1, 2, 3....n i.e the total number of the set bits present in all the numbers till n, what should be the complexlity of this code of mine please any one tell and also how … |
 | I enrolled myself into 2 college classes (Java and C++) and i am curious on what the best book is for c++. I saw another thread with the same question, but that was posted 8 years ago. I do not mind paying for any book (price does not matter). If … |
| | I wonder how to interface octave with c++ I already have m-file that can run on octave but I want to run a C++ program that can get/send command from/to octave Anyone can guid me? Is there any link for the tutorial or example code?  |
| | I need to store the number of digits from a number into a variable. e.g. 538, i need to store 3. How can I accomplish this is C++? Thanks.  |
| | I a new c++ programmer, and i started to solve the SPOJ online challenges just practising , and because of my few experiance.. it gives me wrong answers alwayes. See [ **the Challenge** ](http://www.spoj.com/problems/PALIN/) here. My Code : #include<iostream> #include <vector> using namespace std; int reverse(int input) { int last_digit; … |
| | Hi This is code: #include <iostream> #include <windows.h> #include <fstream> using namespace std; LRESULT CALLBACK LowLevelKeyboardProc( int nCode, WPARAM wParam, LPARAM lParam); int main() { fstream plik; HHOOK hKeyboardHook =0; plik.open("keys.txt", ios::out); plik.close(); return 0; } LRESULT CALLBACK LowLevelKeyboardProc( int nCode, WPARAM wParam, LPARAM lParam) { KBDLLHOOKSTRUCT *pKbdLLHookStruct = (KBDLLHOOKSTRUCT …  |
| | Hi Everyone, I am just starting out so I am sorry for this basic of a question. I have developed the code below to run a very simple program, but, each time the program runs the console window comes up during the program run but closes itself automatically. It should … |
 | Hi, Using Visual Studio 2012. Why does the syntax highlighting turn off periodically. Then unexpectedly it turns back on again, unreproducably, and rather annoyingly. A chocolate eclair for anyone who knows...? |
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| | Hi Everyone, I am trying to read in a block of xml using the following code, but it always jumps over the foreach loop: XDocument doc = XDocument.Load(sourceFile); XElement root = XElement.Load(sourceFile); var DataRecords = doc.Elements("DATA_RECORD"); foreach (var dr in DataRecords) { //build up the values we're interested in string … |
| | hi i am new in programming.i want to write a function “minesweeper(int, int, int )” that takes 3 arguments a, b, and p and produces an a-by-b Boolean array where each entry is occupied with probability p (e.g. if the randomly generated number is less than or equal to p, …  |
 | void drawMap(std::string MapLoc) { char* gridMap[95] [55]; ifstream Map(MapLoc, ifstream::in, ifstream::binary); while (Map.good()) { for(int i = 0; i < 95; i++) { for(int j = 0; j < 55; j++) { if (gridMap[i] [j] == "X") { //Draw Wall glColor4ub(255,255,255,255); glBegin(GL_QUADS); glVertex2f(10*i,10*j); glVertex2f(10*i,10*j); glVertex2f(10*i,10*j); glVertex2f(10*i,10*j); glEnd(); } else if … |
| | So I am writing a cash register program, person buys items and the number calculates. But I am stuck at looping, I want the user to pick to pick all his/her items first then after all the program is done I want the program to ask if the user wants … |
| | This program accepts the name and ID of chess competition contenders. It then randomly assigns a pair of contenders to play against each other. The program predicts the result of each pair by a random result prediction function. The program then continues to pair the winners in the same method … |
| | Hi I have a keylogger code which writes the keys but does not write capital letters and such that:! @ # $% ^ & * () + Someone help me with this? Here is a keylogging code: #include <iostream> #include <windows.h> #include <fstream> using namespace std; ofstream out("plik.txt", ios::out); LRESULT … |
| | Hi, Please help me debug this code. I made a Stack template with two parameters: type and size. I am using it two times: first in conversion from infix expression to postfix (here, <char,50> stack is used), then in evaluation of postfix expression (here, <long double, 50> stack is used). … |
| | Hey, I want to build some form application for Windows and i have tryed usind VS2010 but because IntelliSense is disabled for C++ i'm not able to work normaly as i'm fairly new to programming and i need to see the drop out menus after i use the "->" operator. … |
| | How List.Sort() indecates where the salaries in the list will be ordered and how to be ordered (asc or desc)? using System; using System.Collections.Generic; class Employee : IComparable<Employee> { public int Salary { get; set; } public string Name { get; set; } public int CompareTo(Employee other) { // Alphabetic … |
 | Hi I try to write this program but how I think math? A general store has the following offer. If you shop for a minimum of 200 $ will receive a 5% discount on the full amount. If you shop for at least 400 $, you get 10% off the … |
| | I have made this RSA encryption program but it crashes when it is finished decrypting the line. What is wrong and how can I fix it? #include <iostream> #include <string> #include <cmath> using namespace std; bool IsPrime(int p); int main() { int p, q; int n, phi; int e, d; … |
| | I would find Inverted matrix A ... (A)-1 can you help me? |
| | #include<iostream.h> #include<conio.h> #include<stdio.h> #include<process.h> struct room { char type[3]; int rmn; int terrif; }; void add(room *,int); void main() { clrscr(); int n,r,modifychoice,c,a,i; room rm[5]; cout<<endl<<endl; while(1) { cout<<"\t\t\t"<<"HOTEL DAVIANS"<<endl<<endl; cout<<"\t\t "<<"MENU FOR HOTEL DAVIANS -"<<endl; cout<<"\t\t"<<"1. Enter rooms record for the hotel "<<endl; cout<<"\t\t"<<"2. Modify rooms records"<<endl; cout<<"\t\t"<<"3. Check … |
 | Hello, In trying to port some Java code to C++ I'm disliking the std::stream's lack of copy constructors. I know exactly what the problem is, but I don't know what I can do about it. I have a dangling reference to a stream as a member variable of a class. … |
 | actually, I am new to C++ , although not new to programming. i have a vector of pairs , vector<pair<double, pair<int,int> >> and i want to sort it in incresing order. for simplicity, i am using sort() inbulit function. does pair has ibuilt '<' operator ? or we have to … |
| | Say I have this class #include <iostream> using namespace std; class Test { int x; public: int GetMax(int a, int b); }; int Test::GetMax(int a, int b) { x = a > b ? a : b; return x; } int main() { // Pointer to class Test *t; int … |
| | So here's the question I've been assigned to and I seriously need help with the C++ coding. Please **Airline Seat Reservation System** A small airline has just purchased a computer for its new automated reservation system. You have been asked to program the new system. You are to write a … |
| | I am beginner in c++ programming however I have tried to run my code but I got error and Idonot understanding can you help me thanks:) this is my code #include <iostream> #include <string> #include <fstream> #include <sstream> #include <vector> #include <conio.h> #include <iomanip> #include <map> #include <algorithm> #include "Student.h" …  |
| | The function i am writing below is made to time how long it takes to process a function. // return type for func(pointer to func)(parameters for func), container eg.vector clock_t timeFuction(double(*f)(vector<double>), vector<double> v) { auto start = clock(); f(v); return clock() - start; } This is the function i want …  |
| | I'm having a bit of a problem and I cannot figure it out. It seems as though code will only write to one keyname I have an inifile [section] key1= key2= key3= And my code Class I'm using from http://www.codeproject.com/Articles/10809/A-Small-Class-to-Read-INI-File stringstream ss (stringstream::in | stringstream::out); CIniWriter MyIniTest(".\\test.ini"); char out[20] = … |
| | hey guys so i was thinking of how i would make a program that would state the alphabet from a-z in capitols then the program would change it all to lower case one at a time. btw i would like to use pointers |
| | i want to convert this program to read it in c-free (C++) plllllllzzzz i need this now !! thanx all #include<stdio.h> #include<math.> using namespace std; float x[20], y[20]; void get_corners(int n, float x[], float y[]){ int tempx,tempy; for(int i=0; i<n; i++) { cout<<"Enter (x, y) for point "<<i<<endl; cin>>tempx; x[i]=tempx; …  |
| | can anyone please help me in the sort function ? i have read that there are 3 way to use sort(). 1. use sort(v.begin(),v.end()) and second is sort(v.begin(),v.begin()+n, cmp) then in cmp i can have 2 varaitions, 2.a : cmp as the function (it is okay with me) 2.b. here … |
| | I have 2 classes. AddressBook and SingleAddress. AddressBook is supposed to contain SingleAddress. I'm omitting the #include and some of the extra functions. Here's SingleAddress.h class SingleAddress { private: string lastName,firstName,strAdd,city,country,email; int postCode,homeNum,mobileNum; public: SingleAddress( string s1,string s2,string s3, string s4,string s5,string s6, int i1,int i2,int i3); string toString(); }; …  |
| | Hello all, recently got a piece of coursework I completely know nothing of. It is shown below: Your task is to write a file archive utility similar to that of the Unix tar program. This program will be a command line program (i.e. there will be no graphical user interface). … |
| | Please bear with me, this is my first post So, I have this superclass called A. And I've 2 subclasses A1 and A2. A has attribute name. A has function toString(). A1 inherits name, and has attribute hair. A1 has a method toString() which goes: string A1::toString(){ string stringA= A::toString(); … |
 | Hello guys i want to know how i can get the words in C++ like (a,b,c,d,f.....) im making dice game and when player will put word instead of number to tell him "You need to enter number!" #include <iostream> #include <ctime> using namespace std; int main() { int dice; int … |
| | [B]Introduction[/B] Hello everyone. This little code snippet shows you how to read in scan codes from the keyboard. It is slightly different than reading in a regular character. When you use the [INLINECODE]getch()[/INLINECODE] function, it is normally returning an ASCII value. Some keyboards have extra keys though. These include the … |
| | So if you want to send a text file to some you would use: Client: char* rbuffer; //will save file content here ifstream file; file.open(filepath, ios::in | ios::binary | ios::ate); //open file if(file.is_open()){ file.seekg(0, ios::end); size = file.tellg(); //file size! cout << "The file size is " << size << … |
| | I have this RSA encryption code but it doesnt encrypt the whole message its suppose to encrypt. It only encrypts #include <iostream> #include <string> #include <string.h> using namespace std; // prime numbers int p, q; //compute int n ;//= p * q; //totient int phi;// = (p - 1) * … |
| | hey.... im supposed to make a school project using files and graphics..my topic is telephone directory.if i have to delete a particular entry,should i keep making a new file or is there any alternative with regards |
| | Hi, Let me preface this by saying I'm about 4 days into learning MSVC++ 2010. I just need a little program that takes in a string, puts it in an array and I'd really like it to display it on the screen as the data comes in (1089 strings per … |
| | Hi I'm creating a socket server in Linux using pthreads. I was just wondering, how does the server send specific messages to its clients (for instance, a PM) if each is in its own standalone thread? |
| | My project compiles fine, but when running a push_back on a vector, I'm getting an access violation when the vector attempts to resize itself. I have lots of code, but hopefully I can boil it down to just relevant classes. I am sorry about the HUGE amount of code, but … |
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