51,593 Topics
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| | Hello people, this is my second attempt to get help for the same code. First post is unsolved. I apologize for any confusion in my posts but I'm confused myself so it's somewhat hard for me to properly explain that which I don't even understand....:$.... I have been given the … |
 | Ok....I'm stuck again...I'm wondering if there is a way to sort the following code, so that I can pick out the highest value. I don't believe that I can make it into a list, since they are in parallel arrays. I'm hoping not to have to do a long set … |
| | I need to save an object to a file and then reload it later on. I think this is called serialization but I don't know. I have made a simple example below that I need to fix. [CODE]#include <iostream> #include <fstream> #include <windows.h> using namespace std; #define MAXV 1000 class …  |
| | I am making a modification for Half-Life 2 where the player has the clip sizes and reserve ammunition from the original Half-Life. I know it can be done, but finding it is hard enough. Does anyone know what codes to change to change the magazine sizes and reserves, to make … |
| | Hi everyone This code works fine but the asterisks that print to represent the percentage is wrong. The example given was there was a total of 14 grades across the A-F range, but "A" had 1 and 1 should represent 4 stars one the chart. Whats wrong???? [CODE] #include <cstdlib> … |
| | i have to write a program database with investors names, ammounts invested, city, and the phone numbers. i have one binary search tree, unsorted where the key is the name and ammount, and a heap sorted by the ammount invested. now i need to display the top 3 cities (with … |
| | i believe that it checks every nodes height and makes sure that the left -right is 1 or 0 or -1. It is supposed to return tree if tree is balanced which means that left-right is 0 or 1 or -1 at every node. [CODE] template <class KT, class DT> … |
| | Hi, how could you find the last digit in an integer? Thank you. |
| | [CODE]#include "queue.h" #include <cstdlib> using namespace std; void queue::sort() { Node *nodeLeft, *nodeRight; double temp=0; int nofswaps=1; if(size>1)//check that at least two nodes exists in the queue { while(nofswaps>=1) { nofswaps=0; do { nodeLeft=pFront;//nodeLeft first time points to the first node of the queue and then points to next node … |
| | so I've got a lot of it done, I just need a hint as to the next step. So far I have the user entering a bank account, interest rate, and account balance. I need the user to enter an amount of years and the program will go through that … |
| | I'm trying to configure my application so that a user without wxWidgets installed on their computer can compile the code. I'm not sure how to do this although I believe I have to use .DLLs? Has anyone got some info on how I can do this? Thanks in advance. |
| | Hi i am doing a program that has to add up the percentage for example if i get one question wrong it adds to the percentage and after i answer 20 questions i would get the final mark but i dont get why it doesnt work. [CODE] void multiplier(int difficulty)// …  |
| | Hi all, and must say a great looking forum! I wish to start developing c++ apps on Linux and would like to know what GUIs are supports out of the box on Linux, especailly the main distros anyway? QT, KDE, GTK, etc? I basically want to write gui apps that … |
| | I have a project that I'm working on in C++ where I have to Search for Multiple Occurrences of a String in a Text File. Does anyone have code out there on how to do this? Thanks |
| | So I have a game in c++ console, and it's pretty big now. (over 3 megabytes) I've been using strings in the code forever, but now, I need to make a separate exe program from scratch that will update the game when needed. Big problem - this new program is …  |
| | Hello all, on an assignment my professor has asked us to "paint" a few different shapes on a canvas. (square, rectangle, circle, ellipse) to keep it simple, I had no problem breezing through the square and rectangle. to help you understand, here's a bit of code from one of the … |
 | what's wrong with this code in VC++ 2008 Ex [CODE] #include <conio.h> #include <iostream> using namespace std; class Allocate { private: void* v; unsigned n; __int8 dummy_ret; void* Alloc(unsigned& n) { void* ret; if(n == 0) ret = 0; else { ret = new(nothrow) char[n]; if(ret == 0) n = … |
| | Sorry about my primitive questions but I cannot find a good summary about this basic topic. So I would like to write my own libraries: mylib.h and mylib.cpp. I need to include some standard libraries. But I dont want to overload them, what is the solution? I have to use …  |
| | Why would the following things be advisable? Prefer a plain int over a short int or a long int. Prefer a double over a float or a long double. Prefer plain char over signed char and unsigned char. Why ordering members of a struct by size can minimize wasted space … |
| | I am trying to write a program that 1. opens letterFile containing letters on each line 2. reads in first line of letterFile 3. save the pointer position of letterFile in pos 4. opens numFile containing numbers on each line 5. as it goes through numFile, outputs the letter from … |
 | I need someone to help me with a programme and the specifications are these: The task is to create a customer order system for an oil company who sells oil products to its customers. The customers are companies using the oil products in their machines or in their manufacturing processes. … |
| | So I pretty much finished a memory management simulator, and it worked for the test cases my professor gave me, but when I added a test case it didn't work as it should have. The main issue is, the first job will start, and finish, but the wait time wont … |
| | Hi all, I have a problem in sorting a fortran data and I don't know fortran. Its quite big data and its not in column arrangement. the sample is below : 3.900000000E 2.180E 0.000E 2.653E 1.763E2.339E-01 0.000 0.6983 0.2814 0.0001 0.0080 0.0067 0.0019 0.0007 0.0000 -3.6431 1.4826 7.3919 7.476000000E 5.000E …  |
| | Hi! I am trying to implement a server-cgi with C++, but I don't know which is the best way for the cgi to communicate with the mysql server. In the mysql web, I have seen that there are "connectors", but I don't really know which is their functionallity. Should I … |
| | Hi! I am trying to implement a server-cgi with C++, but I don't know which is the best way for the cgi to communicate with the mysql server. In the mysql web, I have seen that there are "connectors", but I don't really know which is their functionallity. Should I … |
| | Okay, I have a simple problem. I want to print the value of N twice and then increase it (this is just a chunk of a bigger program, ie the one in which it makes sense to do that), however, the output is "1 0". [CODE] #include "stdafx.h" #include <iostream> …  |
| | Hey guys, I was wondering how I'd go about returning a "list" of strings inside a member function. I'm assuming an array would have to be created, but I'm not sure...I've tried looking it up but anything with "string" Google'd leads to the string class. Please, I'd really prefer not …  |
| | i get a stack error [CODE] template <class KT, class DT> void my_bst<KT,DT>::show_bst_structure() const { my_bst_node<KT,DT>* b=root; show_bst_structure(b,0); } template <class KT, class DT> void my_bst<KT,DT>::show_bst_structure(my_bst_node<KT,DT>*& p, int level) const { int i; if ( root == NULL ) { for ( i = 0; i < level; i++ ) … |
| | Hi. I'm writing a function for a project that has many authors. I thought it would be nice if there was a tool (VS add-in) that would enable me to insert a comment in the form of a flow chart so that I wouldn't have to write a lot of … |
| | I am halfway through writing a program to calculate training times, and best exp to health ratios for any game which I can use it in but i have run into an error. I am having a problem loading a form from when a menustrip item is clicked in Visual … |
| | Here's what I have so far [CODE] template <class KT, class DT> void my_bst<KT,DT>::show_bst_structure(my_bst_node<KT,DT>*& p) const { my_bst_node<KT,DT>* le=NULL; my_bst_node<KT,DT>* ri=NULL; //empty tree if(p==NULL) { cout<<"tree is empty\n"; } else { //print node key cout<<p->data<<endl; if(p->left!=NULL&&p->right!=NULL) { show_bst_structure(p->left); } else if(p->left!=NULL) { cout<<"enter left\n"; le=p->left; show_bst_structure(le); } else if(p->right!=NULL) { … |
| | 1. What's hard-coding? 2. What is a standards-conforming implementation? 3. What's "hand-written code"? 4. what's "objects created on the free store"? 5. I tried the escape character '\a' in my c++ program code, but no sound was emitted. Could anybody please tell me why? Thank you very much in advance!!:) |
| | [code] The following code lists the nodes in a binary tree in two different orders: preorder:C,B,A,E,D,F,H postorder:A,B,D,H,F,E,C Draw the binary tree. The answer is : C / \ B E / / \ A D F / H so, my question is how should i think or is there any … |
| | So I made this coin flipping program. It generates a random number between 1 and 2, and checks to see how many "flips" it would take for it to get 15 flips in a row. However, every time I run it, I get the same number, 13505, every single time! … |
| | I have to write a palindrome test function, I'm thinking of creating two arrays. One is inserted by the user which then populates the second array in reverse. Is this the right direction to go? Thx |
| | Hey, I have been struggling with a problem on a project Im working on. I have 3 ints, day, month, year and I want to put them into a string I use for another function to search through a file. so lets say day = 20 month = 11 year … |
| | Sorry, the thread title should read "File paths with spaces" Hello everyone. I am finalizing this little shift cipher program that reads a plain text file line by line, encrypts it, and writes it to a cipher text file. I'm just having difficulty when a user enters file paths with … |
| | hello I wrote this code and i'm having some trubble with it. When i debugg my code i get a bunch of these errors. [TEX]c:\users\roxxi\documents\visual studio 2010\projects\lab3\main.cpp(33): error C2679: binary '<<' : no operator found which takes a right-hand operand of type 'void' (or there is no acceptable conversion) 1> … |
| | How can I initialise a Datetime^ variable with current Date? I have this idea but I'm not sure: [ICODE] Datetime^ curDate = gcnew DateTime::Now; [/ICODE] Anyone? |
| | Hi guys! I am wondering how can one perform a sorted merge between the calling object list and the the passed in list? Here is what I have got so far : [CODE]#include<iostream> using namespace std; #define NULL 0 template <typename T> class DoublyLinkedList; template <typename T> class Node { … |
| | I have my coding idea laid out, but I think there is an easier way, plus I can't really get it to work, because I don't know how to accommodate for duplicated values. Here is my data: [code] Enter name of file students StudentID LastName FirstName Q1 Q2 Q3 Mid … |
| | So here is the question and it is really stumping me because I can print the alphabet once but cant figure out how to repeat it. First create a character array that contains the 26 letters as shown here. //Easy I can copy and paste ha. [CODE]char cAlphabet[] = {'a','b','c','d','e','f', … |
| | here is my code main [CODE] #include <iostream> #include "account.h" using namespace std; int main() { account a; return 0; } [/CODE] account.h [CODE] #include <iostream> #include "Lentext.h" #include "Deltext.h" #include <string> using namespace std; class account { private: char account_Number[11]; char name[1000]; char address[1000]; char city[16]; char state[3]; char … |
| | I am building a program requiring making some classes with inheritance. I can't seem to be able to access the members of the class objects. My code looks like this: [CODE]#include <iostream.h> #include <stdlib.h> #include <time.h> class Animal{ public: int number; int legs; Animal(){ number = rand()%9; } }; class … |
| | i.e char fullname[80]; char * prt; [U]in MySQL we can write : select * from table1 where name='fullname'[/U] How to write in C++? while(fullname!=NULL) { executeQuery"select * from table1 where name='"+fullname+"'" }//----I tried this, but dont work. need your help please。。。。。 |
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| | want to be able to count the words in an array or a string :S but i am not sure how to do it could i get some help please what i want to do is be able to tell how many words have been entered. so i will need … |
| | hey, i wrote a program to create a hash table using an array of numbers, but I do not know how to display the actual table on my screen. Does anyone know how to display my results? So far, I am able to print the numbers that I have in … |
| | I am writing program segments (not real programs or functions) to make sure if I understand how to do each one by using "push/pops for stacks" and "addQueue and DeleteQueue for Queues". Can someone please help me with these questions. I don't know if I am correct or not! 1. … |
| | I'm using Visual Studio 6.0 for C++ and while I'm stepping through my code in Debug mode, I'm not able to view any of my static variables in the "Locals" section of the context window. I know there has to be a way to set this up, as the computers … |
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