49,766 Topics
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| | Hello all, A simple problem for anyone who know Qt, I'm very new to Qt and GUI programming in general. I’m on a linux platform and using Qtcreator. I have a window (see [here](http://1.bp.blogspot.com/-QM3EiY3oh5Q/UMeo8rb4fUI/AAAAAAAAAWY/tWPLdEl6OgM/s320/box.png) for a screen shot). I wish to have two "sub regions" (incorrect terminology I’m sure) within … |
| | is it possible to pass an already defined function into a pthread? so for example within my code i am able to define an array size once a user enters an array size(for example user enters 200) it will add the numbers 1-200 to an array , i then have … |
| | 10-4. Write a class that implements a list that holds strings. 10-5. Write a bidirectional iterator for your String_list class. 10-6. Test the class by rewriting the split function to put its output into a String_list. there are theses three exercises in the book I'm studying, what is it asking … |
| | #include<iostream> #include<cmath> #define pi 3.1415926535897 using namespace std; int main () { double lat1; double long1; double lat2; double long2; // initilaise values double latz; double longz; double a = 0; double c = 0; double distance = 0; double x = 0; double y = 0; cout << "enter … |
 | if i want an array of 10000 ints and i just nned to use it like array only (not the functions which vector have seprately from array), then i make an array int a[10000] and vector<int>a(10000); then memory allocation time will be different for them ? if yes, then please …  |
 | Write a program with a function main () and selecting a menu of functions: Generate a programming-random number generator data for lottery ticket / max 100 / with six-digit numbers and store them in an array -Overwrite generated a new array and sort this array in ascending order and display …  |
 | Hi, I have a function which returns a pointer to array with data: `float * EZ_MATH::EZ_GE_BY_ME() { ... }` Now, how can I access this data? This doesnt work: `float * memA = temp_m.EZ_MATH::EZ_GE_BY_ME();` `ofstream output("out_file", ios::out);` `output << memA[0] <<endl;` `output << memA[1] <<endl;` Help! |
| | #include <iostream> #include <string> #include <iomanip> #include "mainmenu.h" using namespace std; string bookTitle[20] = {""}; string isbn[20] = {""}; string author[20] = {""}; string publisher[20] = {""}; string dateAdded[20] = {""}; int qtyOnHand[20] = {0}; double wholesale[20] = {0.0}; double retail[20] = {0.0}; string searchTitle; int main() { // Declarations … |
| | can anyone help me how can i get the time at my desktop using <dos.h>  |
| | So i've been working on this program for a couple of days and just cannot figure it out for the life of me. I'm fairly new to classes and methods so I think that's probably why. Here's the lowdown of the project: > New electronic monitors are being installed on … |
| | Forgive me if the title was even worded properly. What I'm trying to accomplish is to be able to create an unlimited number of objects for use by struct and quickly realizing that my thought process on how to achieve that is wrong. Here's the related code: struct person { … |
| | I'm having an issue in creating my "Horse Race" program. I'm getting error "subscript requires array or pointer type" in my while(winner==false) loop at if(q==null) { tick[q]++; } and for(int q=0; q<numhor; q++) { if(tick[q]==10) { ... } } in addition to several places in my separate class files, even … |
| | Not sure if I posted correctly. I am trying to do a bubble sort on a 2D array. I want to sort the array by columns. I get it to compile but it doesn't run correctly. #include <iostream> using namespace std; int main() { int array[10][10]; int col, row; cout<<"Enter … |
 | As you know how avl should be balanced after deletion of a node, I'll get to point. For starting, Im considering deleteing a node with no children. For Example a Tree: 10 / \ 5 17 / \ / \ 2 9 12 20 \ \ 3 50 Lets say … |
| | > Write an EFFICIENT program that reads in the name of a file containing positive integers that are less than 1,000,000. The program prints out the integers in the file, in the order that they appear, eliminating duplicates. So if the file contained 8 3 1 9 2 8 15 … |
| | Hello, I'm working on an assignment and I'm having a bit of trouble. Around **line 12** it calls a **world->getOrganism(int,int)** However no matter what value of grid[][] I return it crashes. The if() should be checking to see if that particular grid cordinate is of the ant class. (dynamic_cast<ant *>(world->getOrganism(i, … |
| | how to write a program to stimulate a bank transaction. there are two bank accounts : checking and saving. first, askk for the initial balance of the bank accounts ; reject negative balance, then as for the transaction ; option are deposit, withdraw, and transfer. then ask for the account … |
| | This program works fine, but I need help with the date validation. I have a regular expression that checks for dash patterns and integers and that is all. Is there some way I can add a date validation that can check for improper dates and leap year? If so, is …  |
| | #include <iostream> #include <string> #include <iomanip> #include "mainmenu.h" using namespace std; string bookTitle[20] = {0}; string isbn[20] = {0}; string author[20] = {0}; string publisher[20] = {0}; string dateAdded[20] = {0}; int qtyOnHand[20] = {0}; double wholesale[20] = {0.0}; double retail[20] = {0.0}; void main() { // Declarations for function … |
| | my code freezes whenever i enter 12-19. #include <cmath> #include <iostream> using namespace std; int main() { int multiples; int answer; int square; int cube; int num; cout << "Please enter a positive number less than or equal to 20: ";\ cin >> num; do { if(num >=20) cout << …  |
| | I need help with the editbook part on serendipity bookseller part 8 and the deletebook function as well this is what I have so far:  |
 | I'm trying to build libgd and can't seem to get past this error. It configures without error but when I go to make Install the below error occurs. Would anyone know how to get past this? WinXP, MingW. Thanks. gdfontg.c:4380: error: variable 'gdFontGiant' definition is marked dllimport gdfontg.c:4380: warning: 'gdFontGiant' … |
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| | Hey there, my code is nearly perfect, but I need help with my input for a value. here's the snippet of my code: cout << setw(15) << right <<"$" ; double Amount; input >> Amount; cout.setf(ios::showpoint); cout.setf(ios::fixed); cout.precision(2); cout.width(8); input.ignore(); cout << Amount << endl; i know that input puts …  |
| | how can we use callback functions in handling events using ActiveX control? Can any one explain with simple example Thanks in advance.. |
| | Hi! As the headline suggests I am getting the following error message: First-chance exception at 0x00d690d1 in Nyår.exe: 0xC0000005: Access violation reading location 0xcccccccc. Unhandled exception at 0x00d690d1 in Nyår.exe: 0xC0000005: Access violation reading location 0xcccccccc. #include<iostream> #include<cstdlib> #include "Participantsregistryhead.h" int main() { _CrtSetDbgFlag( _CRTDBG_ALLOC_MEM_DF | _CRTDBG_LEAK_CHECK_DF); ParticipatorRegister Registry; Registry.typeOut(); … |
| | I have a Code::Blocks project that includes a perl script which creates a c++ source file containing a linked list; the linked list is built by parsing special comments that may be included in all of the project's other .cpp files. The script is desinged to automate the creation of … |
 | Hi all, We have just upgraded our btinternet router, and they gave me the old one to experiment with. The router is identical to [this one](http://upload.wikimedia.org/wikipedia/commons/7/71/BT_Home_Hub.JPG). A friend thinks a script would have to be written in C++. The router has all of its config stuff on a web interface, …  |
| | Can anyone help me with this pratice question: 33 31 11 47 2 20 24 12 2 43. I am trying to figure out what the contents of the two output lists would be after the first pass of the Merge Sort. The answer is supposedly: List 1: 33 11 …  |
| | can u please help me to make this program..a program that decide and accept y for yes and N for no.y to repeat the process and no for the exit of the program.. ASAP PLS..TENKS |
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