51,593 Topics
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| | Please enter your starting balance: 200 What would you like to do? B...Show Balance D...Deposit W...Withdrawal Q...Quit B Your balance is 200.000000 Press any key to continue . . . i put my set precision to 2 and it's printing 6 zeros. how come?  |
 | Guys I am trying To send a mail using C++ code i found from the net , when i compiled it it says In function `_Z13ChilkatSamplev': [Linker error] C:/Users/dhayalan/Documents/mail.cpp:10: undefined reference to `CkMailMan::CkMailMan()' [Linker error] C:/Users/dhayalan/Documents/mail.cpp:14: undefined reference to `CkMailMan::UnlockComponent(char const*)' [Linker error] C:/Users/dhayalan/Documents/mail.cpp:21: undefined reference to `CkMailMan::put_SmtpHost(char const*)' [Linker …  |
 | can anyone show me how to convert this linkList statement into Array ? ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ class linklist { private: struct node{ struct student{ // node->info string name; int id; string prog; double cgpa; }st; node *link; }*head; public: void insFirstNode (string name, int id, string prog, double cgpa); }; void linklist::insFirstNode(string … |
 | #include <iostream> using namespace std; struct td{ int ** subj_no; }; int main(){ td p; **p.subj_no = new int * [7]; } If not then how should I accomplish this task? What's the corrected version? |
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| | So what would be the size of this array in bytes if on a 32 bit machine: double *arr[4] ;  |
 | can anyone please explain me in brief that how exactly this container work ? or can u giveme some link of this. i have tried to look on some links by google, but i am not much clear about my doubt. please help me if u can. thanks.  |
 | Let's say I have 3 text boxes called item_name,item_price,item_type. And there is a listbox that has the item_name and another list box that has item_price, another one with the item_type. Let;s say we want to click on the item_name. After clicking on the item_name list box's first item. how to … |
| | If I have two objects (Intern and Manager) derived from an Employee class, could I create a function that would return a pointer to a new instance of one of the two derived objects by passing the type to the function. So, could I do something like this (I know … |
 | Are there any limits to how many bitmap resources you can have embedded in your executable? If it matters, using visual studio 2010, windows platform. |
| | int x; cin >> x; //If user writes 05 in x. Then I want that 05 should be printed when we cout << x; //If user writes 005 when prompted for x then printing x should print 005, because 005 may be a telephone extension. Is there any way?  |
 | I'm building pdf software with multiple dependencies (podofo) and when compiling I'm getting the errors. error: conflicting declaration 'typdef short int unit 8' error: conflicting declaration 'typdef short int unit 16' Would anyone know if there a CXX Define command I can use to bypass these errors? My CXX flags … |
 | Hi all, I have this if condition which never seems to be true, but should be! It's the part in the code where I pull the String^ from textboxes (the regUsername textbox) and compare the inputted username with the first word from every text file line. So every text file …  |
 | Hi, I'm trying to output a list of dvd titles along with some of their details. The problem is that it seems I can't get them aligned all pretty well. So I upload the screen shot as well as the code generating it. Please help me out here. This is …  |
 | can someone help me ? i have problem to make airplane seating program.. what it need is i ust put the details of the booker in the seat.. for example , when we want to check who already booked this seat,we click that seat and it will appear name and …  |
| | I am in a fundamentals class for C++ and having a bit of an issue. I know the problem is not fully understanding. I am not looking for the answer but to get direction to better understand what I am doing wrong and how to fix it. The Problem: Write …  |
| | `Inline Code Example Here`I am using a pair of pthreads that call a pair of functions for ping-pong dma data transfer that are used in a loop for data transfer from an acquisition board. For a large # of waveforms, I ultimately run out of PC memory and the program … |
| | Hello i'm getting theses to error with my sql code can anyone help me ot at all i'm really lost and can't find much to help where i'm going wrong.Code is below Error 3 The best overloaded method match for 'System.Data.SqlClient.SqlCommandBuilder.SqlCommandBuilder(System.Data.SqlClient.SqlDataAdapter)' has some invalid arguments Error 4 Argument 1: cannot …  |
 | Hi everyone, Heres my problem: I've installed Qt 4, and there is **no** qmysql.dll/.a in C:\Qt\4.8.4\plugins\sqldrivers\. I am running a MySQL database program and I get Database error: Driver not loaded. Theres not really a lot of help anywhere on google so hopefully DaniWeb will yet again prove itself as … |
| | New to c++. I'm trying to figure out how to use strcmp with array's . I need to see if a array holds the word "hello". I can't get my code to work quite right. What is it missing? #include<iostream> #include<cctype> #include<cstring> using namespace std; int main() { char a[30]; … |
 | Tryying to coun the numeber of comparicion but dont know how to count them include <iostream> #include <time.h> #include <stdio.h> #include <conio.h> using namespace std; //funcion para dividir el array y hacer los intercambios int dividir (int *array, int inicio, int fin){ int comp=0; int izq; int der; int pibote; … |
| | My Thinking: struct student { int *subjects_number = new int [NoOfSubjects]; } main() { int NoOfSubjects; cin >> NoOfSubjects; } Objective: students could have taken different number of subjects. Now modify the structure such that its variable subjects_numbers has type pointer to int so that we can store scores for … |
 | Segmentation fault (core dumped) Can someone please explain what that error message means? I'M tryin to use `strcat()` to add "0" to the left end of char `*argv[1]` I want it to do this only when the lenth of `argv[1]` can not evenly be divided by 3. So if I … |
 | I can see methods in stdio.h, iostream, etc in Turbo C++. But I confuse now because now I try to use code::blocks. Thank you if you solve my problem |
| | How to handle null values in C#. When I am entering characters in a char array i want to leave some values blank or empty (null). But when i do that my program terminates giving me an error. The error is shown in the pic below. What should i do …  |
| | Why the condition if ((a[0] == 'y') | (a[0] = 'Y')) is ALWAYS TRUE in the following code? #include <iostream> using namespace std; int main() { cout << "Enter 10 integers seperated by spaces: "; int array[10]; for (int i = 0; i<1; i++) cin>>array[i]; cin.ignore(); cout << "Do you … |
| | I am compiling some source that is linked to two packages. One is OpenCV and the other is a driver library for an infrared camera. The company only provides a 32-bit version of the library via an rpm package. I compiled OpenCV from source and it's libraries are installed in … |
| | Guys Plz help me out of this.... i have to take common values from three arrays and if there is repetition of values code should display value only 1 time... plz help? here is my code` #include<iostream> using namespace std; int main() { int count=0; const int size=5; int arr1[size]; …  |
| | Hi guys What's the default pointer value in c++? Can I count on the compiler to set an uninitialized pointer to NULL? Is it compiler dependant? What's the "consensus"? Thanks! -FH |
| | The annoying use case is this: for (vector<int>::size_type i = 0; i < v.size(); i++) { cout << v[i] << ' '; if (i == v.size() - 1) { cout << endl; } } C++11 offers the `auto` keyword for initializer type deduction so that we can avoid verbose and … |
| | I am new to this forum so please excuse any errors i make! I have recently started programming in c++ and one of my first projects is making a console trainer for AssaultCube (FPS Game). I have some errors and have not been able to fix them. Here is the … |
| | I successfully created a C++ window but got an error message when I tried to add menus. I will surely appreciate any help to fix the issue. As follows is the code: #include <windows.h> /* Declare Windows procedure */ LRESULT CALLBACK WindowProcedure (HWND, UINT, WPARAM, LPARAM); /* Make the class … |
| | I've been reading quite a few threads about creating new files if one doesn't exist...but I need it specifically for windows, in the current directory we are in. I've seen ` ifstream file; file.open("TehLeetFile"); if(!file.is_open()) cout<<"Tehleetness is busted!"; else cout<<"it work!!!!11!!!11!one!"; ` That's just checking to see if the file … |
 | Hello I am having problems completing thi code in C# can someone please tell what I am doing wrong.I ge Error Error 1 Program 'C:\Users\stacey ann loretta\documents\visual studio 2010\Projects\EmployeeEceptionDemo\EmployeeEceptionDemo\obj\x86\Release\EmployeeEceptionDemo.exe' does not contain a static 'Main' method suitable for an entry point EmployeeEceptionDemo using System; using System.Collections.Generic; using System.Linq; using System.Text; … |
| | Hello, I have a school assignment that i really need help with. I am supposed to create an X shape with asterisks using for loops. I am terrible at for loops so i was wondering if you guys could help me out a little in figuring out the best solutions. … |
| | I have been told that in C++ the concept of a string does not exist. A string is just an array of type char. So in the following code, is message an array because it doesn't really look like one? char *message = "I am having trouble understanding pointers"; std::cout … |
| | Suppose I have a code: Class A have items which is pushed into a vector...I want to access Class A element from class B through A's vector.. class A { friend class B; vector<A> data; //store info in vector }; Class B { void showDataInClassA(); A a; } void B::showDataInClassA() … |
| | I am creating a project in turbo c++ and it is based on kids and i want to implement the speech like it will speak(a for apple).so is it possible to do this?and if possible then please help me out. |
 | I am trying to write a program that creates a new file every time I use the application. Right now, this is what I am doing: outfile.open("Application.txt"); outfile<<"First Name: "<< firstName <<" "<<"Last Name: "<< lastName<<" "<<"Student Number: "<< studentNumber << endl; outfile<<"Email Address: " << emailAddress <<" "<< "Major: … |
 | So here is what I'm trying to do: `Inline Code Example Here` my constructor takes a char pointer: lengthString = strlen(nameSentFromMain) + 1; namePrivate = new char[lengthString]; strcpy_s(namePrivate,lengthString,nameSentFromMain); next in the destructor to avoid memory leaks I have: delete [] namePrivate; The error I'm gettting says _BLOCK_TYPE_IS_VALID(pHead->nBlockUse). Strangely enough the … |
| | I just build Boost_1_52_0 and the resulting Boost Include directory and Lib directory appeared outside the boost directory folder. Is this supposed to happen? I placed a directory on my C drive called 'Boost' (C:\Boost). I then unzipped the contents into that folder. Another folder containing the boost source code … |
| | **I have this timeissorted.c file, and right now it's running at around about 8397599 usec. I'm looking for help toward improving the performance of this code to make it run faster.** #include <stdio.h> #include <stdlib.h> #include <sys/time.h> #include <stdlib.h> static struct timeval start_ts, end_ts, diff_ts; void startClock() { gettimeofday(&start_ts, 0); … |
| | #include<iostream> #define MAX 1000000 #define loop0(i,j) for(int i=0;i<j;i++) #define loop1(i,j) for(int i=1;i<j;i++) using namespace std; bool flag[MAX]={0}; int tree[MAX]={0}; void update(long int node,long int b,long int e,long int i,long int j) { if(b>j || e<i) return; if(b>=i && e<=j) { if(flag[node]) { flag[node]=0; return; } else { tree[node]=e-b+1-tree[node]; flag[2*node]=!flag[2*node]; flag[2*node+1]=!flag[2*node+1]; … |
| | i just started with C++ program so i know very little programming . i have to make a program that calculates tax the senerio is this Federal: 15% on the first $43 561 of taxable income, + 22% on the next $43 562 of taxable income, (on the portion of … |
| | hey, just looking for a bit of advice on code readability, i've figured out a new and i hope better way to handle collisions but the when reviewing the code it all just blurrs together for me so is there some format teckneuqies i can use so its easier for … |
 | Hello members, i need your help on this: The birthday paradox says that the probability that two people in a room will have the same birthday (month and date only) is more than half as long as n, the number of people in the room, is more than 23. This … |
| | Im trying to get my program to do z=x*y and z=z+5.0 but not sure what I am doing wrong. #include <iostream> using namespace std; // Declaration: Tells the compiler how a function is called int multiply(int x, int y); int main() { // You can compile a call to the … |
| | Would this be considered as a Subrountine problem? My program runs but I feel like it is missing something else. #include <iostream> using namespace std; void getData(int, int, int); int main() { int x,y,z; cout << "Please enter first number: "; cin >> x; cout << "Please enter second number: … |
| | Hi..i m creating a project in turbo c++ with os windows 7 and i want to implement it dynamically.so how connectivity of oracle is possible with c++?(turbo c++ or dev c++) |
 | I have been making a C++ application and currently checking if there exists any memory leak before release. My application will be running as an object over HTTP server and it should be idle until an HTTP request comes in. Which means it should release most of memories when it's … |
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