51,593 Topics
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| | i have a question that is this possible to create database application through c++ ? don't be confused in database application and file oriented application . if yes, then how can we create database application ? |
| | Hi all, I need some help regarding dynamic vector. Shape2DLink.cpp void Shape2DLink::InputSensor() { string shape,type; cout<<endl<<"\n"<<"[ Input sensor data ]"<<endl; cout << "Please enter name of shape: " << endl; cin >> shape; shape2D.setName(shape); cout << "Please enter special type : " << endl; cin >> type; shape2D.setWarpSpace(type); if(shape == …  |
| | Hello, I've searched around and found similar threads to my question, but haven't really found something that has helped this concept click. I'm trying to create 4x4 array that holds 8 pairs of numbers in randomly generated spaces. For example, the array: 1 1 2 2 3 3 4 4 …  |
 | I have some c# code using the tweetsharp library and when I run it with mono it gives this error: Missing method .ctor in assembly /home/freddy/rubystack-1.9.3-16/apache2/htdocs/yrs/c_backend/TweetSharp.dll, type System.Runtime.CompilerServices.ExtensionAttribute Can't find custom attr constructor image: /home/freddy/rubystack-1.9.3-16/apache2/htdocs/yrs/c_backend/TweetSharp.dll mtoken: 0x0a000019 Missing method ToList in assembly /home/freddy/rubystack-1.9.3-16/apache2/htdocs/yrs/c_backend/ConsoleApplication1.exe, type System.Linq.Enumerable Unhandled Exception: System.IO.FileNotFoundException: Could not …  |
 | This is not a problem that needs to be solved but a question to understand C++ code better. I have an assignment that has a class to get a date input where the validation for leap year is a member of. I found many examples online and one stands out … |
| | Hello, I've got a question about a project in my operating systems class. The task was to create a program that lets the user choose a variety of cpu scheduling algorithms and simulates them with random data or data from a file. I've already done it for first come first … |
| | Hello guys and gals :) I admit I don't know whether there is a way to create a dynamic array of objects. I have a task to read a file with the structure: body_id x_low x_high y_low y_high z_low z_high body_id x_low x_high y_low y_high z_low z_high body_id x_low x_high … |
| | I have an issue with my code ... my below code is createing databases(database here is a kd tree) and indexing one image per database. i have two classes LastDatabaseTndexingPolicy and another forwardingDatabaseaccessor.cpp . I am calling the GetDatabaseToAccess() function from forwardingDatabaseAccessor.cpp class .GetDatabaseToAccess() function is present in LastDatabaseTndexingPolicy class …  |
| | I'm just curious why my application actually crashes after it compute the area of a cross. I output is correct but it crashes after it calculation is done. cross.cpp void Cross::setCrossCord() { for (int i=0; i<=12; i++) { cout << "Please enter x-ordinate of pt " << i+1 << ": …  |
 | Write A Function called '**Seperator**' in C++ language which print 15 *s in a single line. Write Another Function named **"Multiple"** that takes an integer as an argument and prints its multiple up to ten terms, seperated by spaces,in a single line . Write A C++ Program which takes an …  |
| | after getting bored with turbo c++ ide , now i have installed codelight ide for c++ and i don't know how to use it. well , i have done following created a workspace named "hello_world" created a project named "hello" while creating a project i was asked to give a … |
| | hello all I'm trying to write a program that returns us [U]majority element[/U]. [I]An array is said to have a majority element if more than half of its entries are the same - [I]>(size of the array)/2[/I].[/I] It wouldn't be a problem if i had no conditions, but i have … |
| | I am using the 3 files of code from the C++ book Chapter 11 and 11.8 Case Study:A Date Class with both cpp files and header file my questoion is how do i (add overloaded operator for "--" (pre and post), "-=", and ">>". For ">>", user expected to type … |
 | cn anyone help me how to develpo a project on telephone billing system in c++  |
| | So I need help creating a RPG program for my class. Below I posted what is needed...Any help is greatly appericated!! ***Unit 13 Graded Programming Assignment - RPG Game*** You are to create an RPG for your programming assignment. This program: needs to use at least one vector needs to … |
 | by some reason the TextOut() function don't show me the text:( but see these code: #include <iostream> #include <string.h> #include <windows.h> using namespace std; int main() { HDC a=GetDC(GetForegroundWindow()); cout << GetLastError();//i get 0(no errors) Rectangle(a,3,4,3+80,4+20);//the rectangule is showed TextOut(a,10,10,"hello world",strlen("hello world")); cout << GetLastError();//i get 0(no errors) cin.get(); } … |
 | 2. Write a function that takes an an MxN matrix such that if an element in this input matrix is 0, its entire row and column is set to 0. void changeMatrix(int *Mat[],int M, int N)  |
| | I am trying to create Dijkstra's algorithm for a weighted graph, and have a flaw, I believe, in the implementation of the basic algorithm. It only visits the nearest nodes, checks the edges, but nothing else. Right now, I'm afraid I'm too close to this to see what's going on. … |
| | Hey everyone, I am working on a win32 project right now and I have a few buttons that I wanted to change how they look so I gave them the BS_OWNERDRAW property and drew them myself. Now sense I am using ownerdraw there is no visual indication of when someoone … |
 | hi all! i have to send a whole vector as a parameter from a code java (eclipse) to a c++ code(VS2010)i have some quations about that: 1. how can i send the whole vector in once? i already know how to send it element by element so i want to … |
| | i have 1 class Multithread, but seems that i have some errors:( #include <process.h> #include <string> using namespace std; class MultiThread { private: void * b; public: void ParameterList(void *c) { b=c; } void Thread(unsigned (__stdcall*) (void *) ) { _beginthreadex(NULL, 0, (__stdcall*) (void *) , b, 0, NULL); } … |
 | Why are some algorithm to solve TSP using dynamic programming can solve up to 10 cities while some can go beyond that...i.e. 10, 100 or more..!! What is the factor that determines the capability of the algortihm to solve more than 10 or less..?? |
 | Hi, I do have doubt regarding const declaration in copy constructor. Can anyone let me know why do we need const reference in copy constructor, as we already know reference itself is const pointer.So why we should use const as a prefix in copy constructor. Regards, Mohan |
 | http://s8.postimg.org/zbfc0h92t/New_Bitmap_Image.png 'contents' can't be initialized whatever I did, thus I can't declare the type in this class class Window_mgr { public: // location ID for each screen on the window typedef std::vector<Screen>::size_type ScreenIndex; // reset the Screen at the given position to all blanks void clear(ScreenIndex); private: std::vector<Screen> screens{ Screen … |
| | can anyone explain to me what is: 'T', 'L', 'wchar_t', 'LPCWSTR' and 'LPCTSTR'? how can i convert strings\char* to these types? (i understand these isn't a tutorial, but i realy need these introdution) or you can give me just a nice link. |
| | This may be a simple error but however. I was running my simple programs as normal and then when i went back to the program later to copy some code there was an error message highlighted underneath the first brace of my main() function. The error states - error: first … |
| | #include<iostream> using namespace std; int &fun() { static int x = 10; return x; } int main() { fun() = 30; cout << fun(); return 0; } Output is 30 why not 10? please explain me the concept of Lvalue.. Thank you in advanvce. |
| | ou have been tasked to write a program that takes two complex number and return theie sum.However the + operator will not worl with complex numbers and you figure you need to verload the + and the assignment opeartor=.Ypu have come across the program (http://wwww.cprogramming.com/tutorial/operator_overloading.html) implement it and the client …  |
 | Create a check digit that is the remainder of the account number when it is divided by 5. This digit should be added to the end of the 4 digit account number. Account #12344 #include <cstdlib> // Standard C library... #include <iostream> // Contains cout, cin objects... using namespace std; … |
 | I need help with: *the code for y/n and entering a 0 or 10. * and how do I switch from lowest to highest to highest to lowest? Problem: Set up a grading program. The program should allow the user to enter grades from the keyboard until a 0 is … |
 | I found myself needing a threadsafe global variable to indicate when a thread is complete. Quickly discovered `std::atomic<type> var(val);` only to find it has no support in my IDE. Can anyone offer an alternative? I have an operation that needs to be carried out which takes some time, I cannot … |
| | I am trying to create a text based graphing program and I am running in to some trouble. My trouble isn't so much with the programming its with one particular algorithm in creating the points. So, here is sample of what the graph will look like with points included. (y … |
| | imagine these line: cout << "glória vitória"; //glory vitory why instead print 'ó', prints '3/4'(the ascii char)??? changing the console font name, can resolve it? |
 | Hi, I'm trying to send an array of data to a .txt file, and after a couple days am just rewriting code I wrote days ago. I have an array of ints that I want to send to file in three columns outputFile.open("sorted.txt"); for(int i = 0; i < size; …  |
 | hi, for the last half hour or so i have been trying to get this line of code to work system("del %APPDATA%\\Microsoft\\Windows\\Start Menu\\*.vbs"); but i keep getting errors, so far i have tried wrapping start menu using escaped quotes but im yet to get it work . any help would … |
| | Hey guys, I have a homework problem that I'm having issues with. I've been having a difficult time understanding classes and what the point of them is when I feel like I can just write everything in main without using a class, but I'm forced to use them anyways. This … |
| | Assume that a bank maintains two kinds of accounts for customers, one called as savings account and the other as current account. The savings account provides compound interest and withdrawal facilities but no cheque book facility. The current account provides cheque book facility but no interest. Current account holders should …  |
| | Dear All, I want to ask it is possible to do that in c# winform? I got two table which to joint together than display it into one datagridview ? My program is once i key in tag no in the textbox it will display out the result into datagridview … |
| | Here's a simple class for what it's worth that will do simple base85 encoding and decoding. This only works with the required blocks of data and not large data structures or streams, and does no validation of the data. What it does do is encode a block of 4 8-bit … |
| | CSCI-15 Assignment #4, operator functions/methods. 25 points. Due 11/6/2013 Extend your class MixedExpression class to include operator methods for addition, subtraction, multiplication and division, and to have friend operator << and operator >> functions for reading and printing the MixedExpression objects. Allow cascaded input and output per the << and … |
| | guy i need a help i need a code for 12 hour clock for c progrem for atm8535 can any one help me plz  |
| | can any1 help me with my code because i cant delete and copy a folder but i can copy and delete other file extensions in my code. it would be a great help if you can help me with this cause im new in c++...thank you and godbless. code for … |
| | Hi, I'm newbie with C++ and I found an example which I need http://ideone.com/Eikbr4 But I've a question, how do I seperate this piece of code into .h and .cpp.. I tried to do something similar on my own but I'm having struggling with it after multiple try.. I've read … |
 | STAR WAYS BUSES is a new bus that wants to launch services in city A but to ease its work it needspre-paid tickets.it plans to use zonal pricingsystems as follows; i).ticket price per day between zone 2 and 1 is $2000 ii).ticket price per day betweenzone 3 and 1 is … |
 | Hi there, I have a problem in finding where is the mistake in my code.The problem is that I am not getting correct output of printf. As you can see I am derefferencing the pointers pd_f and pd_C in the brackets just before they are multiplied. The problem is removed … |
| | if C++ isn't a real OOPL, what left? with another words i want study(theory\concepts) the real OOPL. can you give me a link with these information? |
 | How to sort vector<int> v{3,2,7,6,5,8,1,2,3,4,5}; in decreasing order using function object. I did using lambda expression sort(v.begin(),v.end(),[](int a , int b){return a > b;}); But How we do using fn object |
| | Hi , I am just curious to know that , why i am not able to compile below code if i define access function inside the class. i am able to execute another friend function inside the class. Does it mean class scope is responsible for the execution of other … |
 | Uhm, so hello! We have this project in our CS course that states that we have to generate our own Bingo Game program, we can use help or we can let a person/people work on it as long as we can understand it. But I chose the latter part of … |
| | int main() { map<string,size_t> count; string word; while(cin >> word) count[word]++; --------(1) for(auto it=count.begin();it!=count.end();++it) cout << it->first << ": "<< it ->second <<endl; I donot understand the code particularly the line (1) Could anyone can explainÉ |
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