49,766 Topics
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| | Hi all, I've been trying to work on solving this myself but failed short of new ideas. I am experiencing memory heap errors ever since I tried to transfer some functions (for calculating statistics i.e. getMode/getMean/getVariance) into a new class in the spirit of OOP. Compiler error is... --> This … |
| | I'm growing increasingly confused by the '^' symbol. I have been able to track it down on various sites but there is no real "definition" of it and its usage anywhere. I am creating a .NET project these days and I bumped into the symbol for the first time in … |
 | [code]#include<stdio.h> void main(); { clrscr(); char a,b,c; printf("The quick brown fox jumped over the lazy dog"); getch(); }[/code]  |
| | Hi, I know the code for this post is quite long, but I thought it would be best to be comprehensive about what i'm trying to do as i'm not exactly an expert in this area of programming. I'm stuck trying to work out how to get windows hook procedures … |
| | I use Dual OS. C: is Vista and F: is XP package 3. I downloaded code::blocks from [URL="http://www.codeblocks.org/"]here[/URL] and I also follow the instruction. I successfully installed in C: and I can compile "hello world" When I installed in F:, I cannot compile. though I changed the path from C:/~ …  |
| | hi all, i want to run a while (some condition holds) loop, and each time it is executed create a variable, a different one. my problem is: how do i get them to have different names, in particular, ongoing ones like "entry1", "entry2",... can i have like a counting integer … |
| | hi, i want to have a vector of strings. i know i could declare it by [code] #include <iostream> #include <string> using namespace std; vector<string> vec; vec.push_back("this"); vec.push_back("is"); vec.push_back("my"); vec.push_back("array"); [/code] but thats very tedious. isnt there a more elegant way? if i had the vector as an argument to … |
| | Ok, so I'm really after knowledge rather than a quick easy solution here. I am part of a team that is currently working on the development of a 'kind of' physics engine but I have hit a small wall since adapting the functionality of a class which was previously working … |
| | Hey, I have an item class: [CODE] #pragma once using namespace System; using namespace System::Drawing; ref class Item { public: Item(void); int Type() { return _type; } void Type(int value) { _type = value; } String ^ Text() { return _text; } void Text(String ^ value) { _text = value; … |
| | I created this function for my program : [CODE]int calcTotal() { petShop p; fstream f1; f1.open("Pet_Shop.dat",ios::app|ios::binary); int loc; loc=p.tellp(); float records; records=loc/sizeof(p); cout<<"Total number of records = "<<records; cout<<"Going back to main menu"; menu(); }[/CODE] I am getting this error : [CODE]error C2039: 'tellp' : is not a member of … |
| | Hello! I am probably just going mad but. This code: [CODE]using namespace System.Windows.Forms;[/CODE] Generates the following error 1>GUItest.cpp(6): error C2143: syntax error : missing ';' before '.' 1>GUItest.cpp(6): error C2059: syntax error : '.' ..And I haven't the foggies why. Seems I cannot use .'s when declaring a namespace.. |
| | how can i make the ide word wrap when i am writing lines of code, the code goes so far in width that I have to use the arrow button on my keyboard to see the end of line dev c++ 4.9.9.2 windows xp  |
| | Well I'm having quite a bit of errors with my code and have tried figuring out how to fix it, but I can't seem to figure out what is wrong. Here are the errors 1>------ Build started: Project: circle, Configuration: Debug Win32 ------ 1>Compiling... 1>circle.cpp 1>c:usersemcydocumentsvisual studio 2008projectscirclecirclecircle.cpp(38) : error … |
| | I need to create a new txt file using ofstream, but I need to use a string to name the file. For example: [CODE] string string1 = "testfile.txt"; ofstream myfile; myfile.open (string1);[/CODE] but when I try, it says I can do this because string is not a valid variable type …  |
| | I am trying to say "if variable is NOT greater than or equal to, then do this" Here is how I tried to write it: [CODE]if(mouse_x !>= 300){ blah blah blah }[/CODE] But my complier doesn't like that. Does anyone know what I did wrong? Thanks.  |
| | Design and run a program that takes a numerical score and outputs a letter grade. Specific numerical scores and letter grades are listed below: 90-100 = Grade A 80-89 = Grade B 70-79 = Grade C 60-69 = Grade D 0-59 = Grade F In this program, create two void … |
| | I am working in Microsoft Visual C++ 2008. Here is my sum of digits code: [CODE]#include <iostream> using namespace std; int main() { int num; int sum=0; cout << "Number, please? "; cin >> num; while (num>0) { sum=sum+num%10; num=(num-num%10)/10; } cout << "Sum of digits: " << sum << … |
| | Hello. I'm very new at C++ world, so, I need some help. I'm building an Browser Called iNet, and, it gave me 4 errors: c:\users\sepultura\documents\visual studio 2008\projects\inet 0.1\inet 0.1\iNet.h(193) : error C2039: 'timer1_Tick' : is not a member of 'iNet01::iNet' c:\users\sepultura\documents\visual studio 2008\projects\inet 0.1\inet 0.1\iNet.h(22) : see declaration of 'iNet01::iNet' … |
| | i am pretty new to c++ and dark gdk. im trying to make a simple platform game to start off. i have the basic controls down, the animations, and collision. but i am having much trouble finding how to create the effects of gravity. please help.  |
| | Hi everyone, I'm not so sure if this belongs in here or in computer science but I think as I want to use c++ this may be the place. I was wondering if anyone could point me towards some tutorials/references or books on methods for approaching the design of larger …  |
| | I am trying to implement the A* algorithm in C++ ([url]http://en.wikipedia.org/wiki/A*_search_algorithm[/url]). The pseudocode i am trying to implement is: [code]function A*(start,goal) closedset := the empty set // The set of nodes already evaluated. openset := set containing the initial node // The set of tentative nodes to be evaluated. g_score[start] … |
| | hi frnds!! i have d code for series x^!+x^2+x^3+....x^m with single loop only //wap to find sum of series and print series also //x+x^2+x^3+......x^n #include<iostream.h> #include<conio.h> void main() { clrscr(); int n,x,count1; int sum=0; cout<<"enter a number"; cin>>x; cout<<"enter nth term till which u want to compute"; cin>>n; int count=1; … |
| | Can smeone help me to write a prog. to find the sum of the following series: 1+(1+2)+(1+2+3)+....... n terms Regds. TEJAS |
 | Hello all. I am working on this program and having some troubles with it. I have tried lots of different things and can't get it to do what I want. I guess I am not really understanding the code and how to word it properly. I am writing a program …  |
 | Hello. Can anyone help me how to implement the subscript ([]) operator for a STL list class ? [code] T& operator [] (int n) { } [/code] [code] template <typename T> class list { public: struct node { T data; node* prev; node* next; node(T t, node* p, node* n) … |
| | Due to various posts asking for syntax highlighting, I decided to give it a shot & come up with a Syntax Highlighter for multiple languages. Also as many posters want to Copy it to Word, I added a functionality to directly export the highlighted code to MS-Word. Both the highlighting … |
| | I have to make a program that takes 4 inputs and outputs the 2 largest inputs. So I wrote this code, [CODE] #include <iostream> using namespace std; void largest_two ( int input[4], int output[2] ) { bool restart; int i; int temp; do { restart = false; for ( i … |
| | I've been trying to learn C++ for about a year now and came across [URL="http://openbookproject.net/thinkcs/cpp/english/chap04.htm"]this excellent tutorial[/URL]. I can't leave anything alone so I changed some single quotes to double quotes and have the following code:[CODE=C++]#include <iostream> void printTwice(char phil) { std::cout << phil << phil << std::endl; } int … |
| | Below is the code I wrote, for taking the arrow key imput, just wanted to share it and get some feedback thanks :) [CODE]#include <iostream> #include <conio.h> using namespace std; int main() { int number = 0; int number2 = 0; while(true) { int arrow = getch(); if (arrow == … |
| | Hello everyone, I have a problem in my Borland C++ project. I need to use my own COM object written in C# (this COM allows me to directly print PDF files) in my another project in C++, but as soon as I call some COM functions which require a string … |
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