51,593 Topics
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| | OK, here is a problem that I have found described many times on the net, but have not found a definitive solution. Until recently, file writing has worked just fine for me, but no longer. The questions are: Why does it not work now? What might I have done somewhere …  |
| | Hi I coded a program where you can reverse the contents of an array. But I used two arrays to complete this process, I want to make it work by using only one array. Here is my code so far, it works btw, just need to make it work by … |
| | I have a program which reads entries from a directory. These entries are stored in a vector called fdata. Using vectors gives me an easy way to sort the entries. The program copies files from one directory (the source directory) onto another directory (the destination directory). While the copying is … |
| | I have some doubts concerning some basic C++ concepts, and would be very thankful, if someone would kindly clear the doubts: a) Every variable of a data type occupies a specific amount of memory, like int occupies 2 bytes and so on. So, if I declare a reference variable as, … |
| | Hi all, What is the best sorting algorithm for a doubly linked list? Insertion sort and merge sort appears to the best due to the less overhead compared to the bubble/selection sort. Would like to know your insights on this. Thanks.  |
| | to find the sum of first n even numbers. |
| | Dear programmers, I have downloaded the program from here http://www.tightvnc.com/download/2.7.10/tightvnc-2.7.10-src.zip and want to compile with the vs2013 ultimate edition and get the following error. Thanks |
 | #include <iostream> #include <fstream> #include <stdlib.h> #include <iomanip> #include <string> using namespace std; const int MAX_SIZE = 60; void discard_line(ifstream &in); void print_student_records(structarray[], double scmarks[], double sfmarks[], int size) ; int main() { string id[MAX_SIZE]; double cmarks[MAX_SIZE]; double fmarks[MAX_SIZE]; //char grade[MAX_SIZE]; int choice; char response; int total_records; ifstream infile; cout … |
| | In the course of my programming I have created a new class called Vector (yes I know that vector.h exists, but I like my version better, or at least I have until now). As part of my class, I have overloaded the = to use as an assingment function, as … |
| | I DUN UNDERSTAND WHAT TO DO. PLZ HELP ME. WE HAVE TO DO IT WITH SIMPLE C++ PROGRAMMING. THANKS Egyptian Pyramids were constructed around 25003000 BC, by using large Cubic blocks placed in a perfect mathematical way. Researchers are still struggling to find out how these pyramids were constructed without … |
| | Im trying to animate a sprite just like how that [MUGEN](http://en.wikipedia.org/wiki/M.U.G.E.N) game engine does. Ive been searching the net for an example/documentation but none of it works like on that game engine. All game engine or example on the net uses fixed delay on each sprite ie. 5 ticks but … |
| | string guessNo; **Hi! How do I validate the user input in C++ ? I just want the guessNo string to have** 4 characters, all of which are numbers**.** |
| | I'm having difficulties with this code...it won't randomize the answer for some reason #include <string> #include <iostream> #include <cstdlib> #include <iomanip> #include <fstream> #include <ctime> #define down8 "\n\n\n\n\n\n\n\n" #define down7 "\n\n\n\n\n\n\n" #define down5 "\n\n\n\n\n" #define over4 "\t\t\t\t" #define over3 "\t\t\t" #define over2 "\t\t" void welcome (); void splash (); using …  |
| | I need the solution of this program using C++ .. Develop a database software to maintain the records of students of a college.The software should be user-friendly.The user can easiy add new records,update existing records,create reports of existing records etc. |
| | Write a program to print the following pattern based on user input. For eg: If N=4 the code should print the following pattern. 1*2*3*4*17*18*19*20 --5*6*7*14*15*16 ----8*9*12*13 ------10*11 Again if N=5 the code should print 1*2*3*4*5*26*27*28*29*30 --6*7*8*9*22*23*24*25 ----10*11*12*19*20*21 ------13*14*17*18 --------15*16 For N=2 the pattern will be 1*2*5*6 --3*4 PLEASE HELP AS … |
 | Hi Everone, How do I remotely access my computer - I want to be able to control the mouse and keyboard and view the screen in real time. I wanted to do this in Java, but the experts sent me here because Java is not platform dependent and C++ is. … |
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| | hi , i need help to complete wrting a program // #include<iostream> #include<cmath> using namespace std; int main() { //decaler data here double var, n=0, sum = 0; double x, xi; //input cout << "please enter the value of x :"; cin >> x; cout << "please enter the value …  |
| | I have a base class (A) and two derived classes (B,C) (mode of inheritance is public). I have two values in base class A that needs to be modified by derived classes B,C so i declared their get() and set() under protected in base class. Now each of the derived … |
| | **Guessing game. Write a c++ game that asks the user to guess a number between 1 and a 100. If you guessed correctly, it will say you win. If your too high or too low it will also let you know.** |
 | please can you help to get this answer :  I have a problem in the result of kilometer formula #include<iostream> #include<fstream> #include<iomanip> #include<string> using namespace std; int main() { ifstream infile; ofstream outfile; string outfilename; string filename; string Kilo; string dayfees; double f1, f2, f3, Kilometers, cost_km, … |
| | I have another question and trying to solve but did not solve this anyone who help me to solve this the Question start here...... Write a program that reads a whole paragraph (you can do that with a little common sense) from the user. Now prompt the user enters a … |
| | Hi, I am trying to construct a binary tree using a list. class Element { private: list<Element*> _children; char* _name; //...other data members and methods } I have a class ("Element") that has children ("_children"), but I cannot figure out how to add children to the elements of "_children". I … |
| | Please calculate water bill for Mr Adnan using your program,if last month he used 18 liters of water.Tariff for every liters used in RM0.24.Tariff of RM0.12 will charge for every liters used after the water usage exceeds 12 liters.The programwill be repeated until the user enter ‘0’ liter for the … |
| | hey guyss..!! I'm having some difficulties working with strings (cstyle, object oriented strings). as this is something new for me so I'm not exactly familiar with functions of strings aswell.. write now i have a question for which i was making a solution but the code is missing something please … |
| | #include<iostream> #include<string> using namespace std; int counterofanalog=0; int counterofdigital=0; int counterofsmartwatch=0; int num=0; //class for Genwatch class genWatch { private: int watch_id; string brand; int price; string colour; int date; public: genWatch() { watch_id=0; brand=""; price=0; } void adddata() { cout<<"Please Enter Watch ID:"; cin>>watch_id; cin.ignore(); cout<<"Please Enter Watch Brand:"<<endl; … |
| | Hi, I'm trying to learn templates. I want to pass strings and integers via objects. I made it as a template because my program should support both strings and integers. // Main Function int main() { string element; library <string> comics; cout << "\nPlease type in the element: \n"; cin … |
| | i have a problem with my dev c++ whenever i write a source code firstly it shows output then i made amendments in it after that it is not showing me any output. . . can anyone tell me what is the actual problem??? |
 | I continuously get this warning whenever a constructor delegates to another constructor within the containing type, having virtual bases. `warning C4100: '$initVBases' : unreferenced formal parameter` It's the same warning as when a parameter or local goes unused, it in this case it seems to be referring to the virtual … |
 | Hi guys I need some help in sorting array in descending and ascending order. I already have my ascending program but it does not work when I put codes for descending..  |
| | Hey guys I'm having trouble on placing my loops I actually want to make a square and I dont know how to manipulate my own placement because I am used to gotoxy(); and I think it only works in TurboC++... As of now I am using DevC++ .. Can you … |
| | I not know about 2d array Please help me to solve this problem......................... Write a program that declares a 2-D array of 7 rows and 2 columns. The rows represent one day of the week. The first column is the maximum temperature of that day and the second columns is … |
| | Hi Im stuck doing these in 2d arrays also I dont really get whats its asking for. If someone could help me out I would appreciate it a lot. Find the average for July over 4 years= 87.5 Find the average for the first 6 months in the first year= … |
| | A recent assignment requires me to create a pseudocode for a game of tic tac toe. And I'm a bit lost. Here's the details: ++++++++++++++++++++++++++++++++++++++ Design a program that allows two players to play a game of tic-tac-toe. Use a two-dimensional String array with three rows and three columns as … |
| | please , can you help to find the formulas accourding to the results in the pictures ?  The first formula is based on number of kilometers you plan to go. The expense for this formula is computed as follows: - For the first 500 kms, the cost of … |
| | Hello, I am currently doing my 8th sem project,my project is tracking of surgical instrument in hospital. what i am doing is i will be storing all the details of instrument which are used in operation, in local database. So after operation i will be sending all the instrument name … |
| | Can I ask on how to use the goto statement because here in my program I am using Function and inorder to go back from the top I use goto statement.. Why isn't it working?? #include<iostream> using namespace std; void rankE(){ cout<<"Rank: E "<<endl<<endl; } void rankD(){ cout<<"Rank: D "<<endl<<endl; …  |
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| | Hi, I am trying to explore PoDoFo for parsing PDF files. So I tried to build it on Visual studio following the procedure in the ReadMe.html that came with the package. So i used the following cmake command: cmake -G "Visual Studio 9 2008" -DCMAKE_INCLUDE_PATH="D:\PoDoFo_VS\CmakeRefer\ft245\freetype-2.4.5\include;D:\PoDoFo_VS\CmakeRefer\libjpeg\build\include;D:\PoDoFo_VS\CmakeRefer\libjpeg\build;D:\PoDoFo_VS\CmakeRefer\zlib\build\include" -DCMAKE_LIBRARY_PATH="D:\PoDoFo_VS\CmakeRefer\ft245\freetype-2.4.5\objs\win32\vc2013;D:\PoDoFo_VS\CmakeRefer\libjpeg\build\lib;D:\PoDoFo_VS\CmakeRefer\libjpeg\build;D:\PoDoFo_VS\CmakeRefer\zlib\build\lib" -DPODOFO_BUILD_SHARED:BOOL=FALSE -DFREETYPE_LIBRARY_NAMES_DEBUG=freetype245MT_D -DFREETYPE_LIBRARY_NAMES_RELEASE=freetype245MT .. … |
| | So I have to build a program that shows the outcome of an imaginary battle between two groups of animals. I'm having an issue with making the user select the type of the animal. I have all my data e numerated, but I can't seem to get cin>>type to work. … |
| | Hi, I have a C++ code running OpenGL GUI (CEGUI), I need to wrap this window inside a C# Application. I guess I will compile the C++ as a dll, and add entry points for the C# app. What is the preffered way to do this? I thought of these … |
| | I have been hitting a brick wall with this program. I am new at c++ and the text only shows really really easy examples. the deposit function works fine, but i am running into problems with the checking function and doing the final output. 1. when i type in 'C … |
 | my Region bitmap way uses the CreateRectRgn() and CombineRgn() functions. my question is: is more faster use the CreatePolygonRgn() with POINT array object? |
| | how can i copy the parent background(DC) control to child control DC? |
| | Hello ! I have a task that is difficult for me to handle. The task is: Create recursive function that can be generate a string of length N (N <= 100), formed by the letters 'A', 'B' and 'C' and does not containing two identical adjacent substring. For example: enter … |
 | #include<iostream> using namespace std; int add(int x,int y) { int ans=0; int carry=0; for(int i=0;i<=31;i++) { int p = (1<<i)&x; int q = (1<<i)&y; int r = p ^ q; r = r^(carry<<i); ans = r | ans; if(p&q || p&(carry<<i) || q&(carry<<i)) carry = 1; else carry =0; } … |
| | Hi I just wanna know what is wrong in my program I'm a little bit confused using FUNCTION... Thank you... #include<iostream> #include<cstring> using namespace std; struct Name{ char* names; int grades; }; int main(){ int a, Jo; Name John; Name Alvin; John.names; John.grades; Alvin.names; Alvin.grades; std::cout<<"Student Name: "; cin>>John.names; cout<<endl; … |
| | Not sure how to put my code in to excel. 1.#include <iostream> 2.using namespace std; 3. 4.int main() 5.{ 6. const int n = 20; 7. int Array[n] = { 3, 5, 2, 9, 6, 12, 16, 11, 18, 4, 14, 8, 1, 15, 17, 7, 19, 13, 20, 10 … |
| | > So basically I just started learning to use Windows forms with c++. I am creating an inventory/point of sale system. I have done the inventory part but now I want to do the sales part but I'm not sure how to go about it. I want to create a … |
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