51,593 Topics
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 | After looking at compile errors because I was not overriding this function ( although being convinced that I was) I have a query for all you C++ buffs in the audiance. What does the ^ do in the following line. [CODE] virtual System::Object ^ Clone(void) override; [/CODE] I know this … |
| | Hello everyone, I am a new memeber, and I need help in c++ code. Actually I had a code that need kd tree data structure in order to find the nearest neighbour, so I found a kd tree that had been written in c++ as class and there is a … |
| | hello everybody, i'm niitian:) have been familiar with this community for quite some time, it has help me solve quite some problems, though now i think it's time i join too:) i'm a beginner at c++, don't really think it's way hard, but i do have alot of unanswered questions. …  |
| | Just when i thought this class could not get any harder i get this assignment. The last few lectures i have watched in my class on pointers have gotten me totally confused. Now i have this assignment due in 6 days that i seriously do not even know how to … |
| | Hi All, This alam from delhi and asking for some confusion which i have. actually i want to make my career as a C,C++ developer in Linux and Unix platform . friends i am totally new in this field...i know basic concept of C, C++ and Unix system.... So, what … |
| | Hello All, Its me again with my quirky questions. I am writing a program for homework and the idea is to sort the top 3 runners by their finishing time. Also a requirement of the homework is to gather the names of the runners along side their times. The user … |
| | I have all the way to this part of displaying the board and now I need help on how to play it. I don't want someone to just give me the code, I want to learn what to do. Thanks very much. p.s.= using array [CODE]#include <iostream> using namespace std; …  |
| | Hello everyone, I am VERY new to programming. I have downloaded and installed the Dev-C++ compiler and I am using it with the C++ for dummies book and when I try to compile my simple "This is my computer talking" program, I come up with 70 library based errors. Is … |
| | Hi - I've can see there is other people playing around with vectors and structures in the forum - hopefully someone knows how to do this. I have a vector of structs, and I want to sort it by 'Title' (Alphabetically) - Is it even possible to sort a vector … |
| | I have a richTextBox where I am trying to replace all strings that look like this: "stringvec[11][12]". I have this for loop so far that would work if the string always had the same lentgh but the thing is that I will not know if the string also can look … |
| | [code=c++] #include <iostream> using namespace std; class client { private: int choice; int age; int height; int weight; char *name; public: void menu(); void setStats(); void task(); }; //======================================================== void client::menu() { cout<< "MENU \n"; cout<< "1. enter data \n"; cout<< "2. view data \n"; cout<< "3. quit \n"; int … |
| | im just starting with If, else, true statements and im stuck. # include <iostream> # include <cmath> # include <iomanip> using namespace std; int main() { int score, days; bool Y = true; cout <<"Enter an assignment score and type 'Y' if it was late: "; cin >> score >> …  |
| | i have a small problem in my ass and i dont know how to solve it the problem is: [B]This problem is a game where n objects are arranged in a circle and every mth object is deleted until 1 object is left. The original problem is said to derive … |
![Member Avatar for Run.[it]](https://static.daniweb.com/avatars/orig-avatars/avatar168980.gif){kind=avatar} | Weve been given this example to work with and Im not sure about the line 9 [B][I]char cont = 'n';[/I][/B] - is there even a need for it? The rest of the program I understand. [code=c++] #include <iostream> #include <stdio.h> using namespace std; int main() { int no = 1; … |
| | We're supposed to write a function that calculates both the x and y coordinates of the upper left corner of the square that just contains a circle, given the x and y coordinates of the center of the circle, and the radius of the circle. Return the x and y … |
| | I have to write a program that finds the center of gravity. |
| | I am creating a program to manipulate structures that are similar to linked lists. The problem i am having is in a text file that i am reading in there are delete lines like this. d 1 2 d 2 3 d 3 4 d 2 0 with the first … |
| | Can one of you gurus give me some help please. I am a new programmer so please bear with me. I have a header file called Deck.h and a cpp file called Deck.cpp. In my header file, I have a class called Deck which has prototype function called createPack as … |
| | [code=c+] #include <iostream> #include <string> using namespace std; int main() { string a; cout<< "enter string" <<endl; cin>> a; string b; //======================================================== for (int j=a.size(); j>0; j--) { for (int i=0; i<a.size(); i++) { b[j]=a[i]; } } cout<< b <<endl; return 0; } [/code] i want the first character on … |
| | here is the error I am getting _Default.CalculateFederalTax(double, string)':not all code paths return a value code: double CalculateFederalTax(double grossPay, string taxStatus) { // Calculate Federal Tax method begins // check for the Federal Tax status (Single) if (taxStatus == "S") { if (grossPay < 240) return grossPay * 0.12; else … |
| | Q- Use swapping concept to swap the elements of 1D array consist of 10 integers. Ask the user to enetr the values of array elements then print them out to the screen before and after swapping. e.g. a[0] ----> a[9] a[1] ----> a[8] a[2] ----> a[7] a[3] ----> a[6] a[4] … |
| | I'm trying to create an array that will hold the first name of 100 users I tried char fname[100] but I realized that only creates an array that hold 100 char. how do you create an array to hold 100 entries that has a max of 50 chars in each … |
| | Hi all my friends, As i'm beginner in VC++, i encountered a lot of problem in debugging. I think my knowledge and academic studies should be distinguished properly. I know only c++ but i have OOP knowledge in c programming. But i am not able to handle the debugging in … |
| | I am trying to match a string to see if it follows a given pattern. I have seen this example in my Orielly books but do not understand the logic. Here is the a small snippet of example code: [code=cplusplus] const string digits("0123456789"); const string float_digit = digits + '.' …  |
| | I am in the process of making a bank account class. I need to put a copy constructor to compare the checking and savings account. Also I need to learn how to insert the checking and savings accounts. I need an assignment operator to assign the checking account to the … |
| | Hey everyone. Before i start i'm writing up this code for my mothers employee database. I have attached two files. An example of how it's going to be run through a picture and the employee database which is a .txt file containing data such as first name, last name etc. … |
| | Hi I have a homework program to convert from postfix to infix, almost most of the functions are done but i can't make few functions to make the program run correctly Please help me finishing the remaining functions Here is the code [CODE]//------------------------------------------------------------------------------------------------------- // NextToken.h #ifndef NEXTTOKENH #define NEXTTOKENH #include … |
| | Ok i am writing a program to manipulate structures that are similar to linked list. I have a file that has these contents. 4 5 0 0 0 0 1 0.1 0 2 0.2 0 3 0.3 0 4 0.4 1 0 1 1 1 1.1 1 2 1.2 1 … |
| | Hello all, I am having a bit of trouble overloading the [] operator on a template based LinkedList class. Could you all tell me what I am doing wrong? Thank you so much. Basically it is to provide my template based linkedlist class to act as a normal array. Here … |
| | Hi, I'm trying to 'reduce' a vector using the erase algorithm within a for loop. The idea is to scan a table looking for equal successive elements. Once equal elements are found, it erases one of the 2 elements. I'm suspecting a problem in the for loop, due to the … |
| | Ok guys, our C++ class is winding down and for our last assignments we are getting some tough problems. We are asked to write a telephone directory program that looks up phone numbers from a separate file that contains a list of names & numbers. The program should prompt the … |
 | Hello everyone! I am writing a function to multiply two matricies together. I have written a simple algorithm for a matrix 3x3 - [CODE]void multiply() { int a[3][3], b[3][3], c[3][3], i, j , p, val = 0; a[0][0] = -1; a[0][1] = 0; a[0][2] = 1; a[1][0] = 5; a[1][1] … |
| | I know there is a function that if you put the mousecursor over a buttoncontrol, it is possible to have a litte "window" that occur over this button that tells what this button does. I have looked into the members and seen something like this. I am not sure if … |
| | hi everyone for my comp sci class i'm supposed to write a piece of code which will take in 10 ints and put them into an array of such size. unless the input is either a 3 or 7 in which case wats left of the array will be written … |
| | I have a general wondering about std::vector<string>. If you declare something like this, I have set 1 million elements to this vector. If I run this program just declare it like this without filling the elements with any strings. Does this take up any RAM memory just because I have … |
| | I am creating a program on eclipse with multiple classes, using polymorphism. When I compile, I got the following error....Make:***[5] error 1, undefined symbol: do someone know what it is? |
| | dear all, wat should i do to clear the input buffer stream? and also make me clear regarding flush and fflush. both do the same functions? |
| | when i running this program, i've found that one of the used integer always over load. that is int outq. could someone please help me find out what's make this integer over load at last? thanks. [code=cpp] #include <stdio.h> #include <stdlib.h> #include <time.h> #include <fstream> #include <iostream> #include <string.h> #include … |
| | If I want to find the start and end position of the word "how" on these two rows in a textBox. Is there any other approach then substring each line or is it the substring method I am going to use. ? //text in textBox Hi, how are you good … |
| | I am now using Visual C++.net 2002 edition. My main ongoing project, an application that teaches the game of bridge, is now 350 K + llines of code, 95 % of which is application logic. The 5% dealing with GUI is just SDK for speed. I am just a retired … |
| | Hi I want to have a variable that contains item number. int didn't work because i want to make the item number start with 3 or 4 zeros. if i use char * I can't increment the value of char? any help will be appreciated |
| | Hello everyone, im not as totall a newbie in C++ but when times come to make a mini project for semester n started to make it , then i assume as im a newbie. (well im in 2nd semester) I m trying to make a project which clear most logic … |
| | as the problem i'd met b4: [url]http://www.daniweb.com/forums/thread115104.html[/url] there's another problem looks like same with that problem, is about the logic of the int outq. this make the result1.txt always get unknown words after few loops. i'd like to know how to correct it. [code=cpp] #include <stdio.h> #include <stdlib.h> #include <time.h> … |
| | i have a do while loop in my program. im just unsure of how to make it work. i need it to continue doing the loop until the error is between -0.1 and 0.1 i have this so far, i may have the greater/lesser than signs wrong, or just set … |
| | Hey all, I am starting to work on a portprogramming project. I am not really sure where to go. I am trying simply blink an LED when it is hooked up to the serial port. Can someone give me a start on where to go. I have read several internet … |
 | Hi I have a memory leak somewhere in this code but I have no idea where. Can anybody help me out ? [CODE] #include <windows.h> #include <mmsystem.h> #pragma comment(lib, "winmm.lib") #include <fstream> #include <time.h> #include <cstring> #include "resource.h" using namespace std; const char cn[] = "SameGame"; // ClassName HBITMAP BLUEBMP … |
| | Hi all I'm new to this forum - Hope you can help me with my problem. First off all; I apologize for my poor english skills, i'm from sweeden I'm trying to make a simple phonebook by using a vector of struct's. As you can see in the code pasted … |
| | Hey guys. I need some help on input validation in an array. The program can only input numbers but not characters. This is the code for the input. ( I know im a newbie lol ) [code=cpp] const arraysize = 10; float num[arraysize]; for ( int i = 0; i … |
| | as the project given input1.txt and command1.txt to create result1.txt input1.txt: 1 C0A80001 8F22 C0A80002 0050 32D5B9C 2 C0A80001 8B05 C0A80002 0050 12D67B 3 C0A80001 CC08 C0A80002 0050 32D5B9C 4 5 6 C0A80001 C4A3 C0A80002 0050 34F1 command1.txt 1 output 2 output the queue length 3 idle 4 output 5 … |
 | hi to all how could I use a mathematical operation on in c++. thats always bather me because i need it in my program. pls. help me. |
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