51,593 Topics
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| | 1. Suppose we have three functions f(n), g(n), and h(n) such that f(n) = O(h(n)) and g(n) = O(h(n)). Must it be the case that f(n) = O(g(n))? Explain why or give a counterexample showing why not. I think it is equal ! what you think ? 2. Write a … |
| | Hi, i have created a data structure {heap based}, capable of manipulating up to 10 million elements....I noticed that i can't go above this number because i have serious memory leaks.... The problem seems to be that i haven't written a destructor!{i a bit used to garbage collection!} if i … |
| | If I wanted to declare a large number of variables that were all similar, for example: [code=c] var x1; var x2; var x3; var x4; var x5; var x6; var x7; var x8; var x9; var x10; var x11; [/code] ...etc Is there a faster way to do that? Maybe … |
| | Hello. How can i use SendMessage to "press" other program's button? I don't know other program's button's ID but there is only one button in that program. I searched MSDN and found something. I tried this piece of code: [CODE]HWND hWnd; hWnd = HWND(FindWindow(NULL, "WindowName")); SendMessageW(hWnd, BM_CLICK, NULL, NULL);[/CODE] At … |
| | hi! I'm looking for things which compile on visual-studio, but not in the gcc compiler in the C programming language (C++ it's ok too). I have to make list of such things. If someone could send me link to such list or send me some examples, it will be great! …  |
| | im using a tstringgrid to make a sudoku game im using goEditing = true with a few loops and its working fine so far what i want to do next is is make a tcheckbox so when i input the initial grid values i check the box and it changes … |
| | Hi Friends I need to test the [B]VC++[/B] code its for [B]protected/unprotected[/B] code can you please help me by telling [COLOR="Green"]which software is good for testing or can you send me some links.[/COLOR] I have gone throw NUnit software but in that i am facing many problem for VC++. So … |
| | Please me help me guys...our teacher gave us this problem in c++ and i really dont know how to solve it since i have been confined at the hospital for a week because of dengue..please help me out.. Here's the problem: Define a class named Time to perform the conversion. … |
| | So, my assignment is to take in a student ID, first and last name, and 5 test scores. I am then to average the test scores, collect all of that data into an array and output all of the information in a tabular format(which I have yet to do). I …  |
| | hi all ]i need programme in c++ to insert values in linear array and also delete them plz help me i'm new to c++ programming[/B][/B] |
| | Hey guys, I had applied for a fall internship through my local college to for an Associate Software Engineer. Just got a call and learned it would deal with software testing for the medical equipment. Anyways, are there any subjects I should brush up on before my interview, and would … |
| | i have created a window with a button but what i want to do when i press the button is delete or hide the Minimize, Maximaize and close buttons at the top right of the window now the thing is i know how to do this when i make the … |
| | Hello, I need some help figuring out which errors are syntax errors in this. Compared to what I started with this has come a long way but there are still some in there that I am having trouble spotting. I do know that they if statements are incorrect, i'm just …  |
| | hey all, I'm writing a C++ console app that converts all the letters of a string to an ALT+NUM equivalent. e.g. e might convert to é (or ALT+1154) My problem is only with those ALT+NUM combos that have to start with a 0 For example with letter 'd' the only …  |
| | there are four playing cards . you choose one of them if selected card is 1 spades you win else you lose but ı want to make win card as random from 4 cards. i dont know how. [CODE] #include <cstdlib> #include <iostream> using namespace std; const int clubs=0; const … |
| | Can anybody help me with permutation in c++. say if the entered string is "stop" then there must be 24 (=4*3*2*1) different words made by the letters s,t,o,p. Similarly if the entered string is "abcde" then there will be 120 (=5*4*3*2*1) different words made using the letters a,b,c,d,e. Please Help. …  |
| | Hi everyone, I'm having problems with the output of this coding and I would really appreciate the help. The assignment requires to show how someone's taxes are distributed by first ask the user for the amount of money (dollar[] and income) and at the same time prompt for the taxes … |
| | I am trying to complete this program. It is excuting the second part of it, Which every 5th word needs to be replaced with an underline. But I need to print out the text with out the underlines first. then have it replaced with underlines. Also, the user has to … |
| | okay , i see .... i have situation where i have a list called bunnyList containing mutantType objects, i want to create a new object using a constructor and add this object to my list. Like below. bunnyList.push_front( new mutantType ); with the aid of the newly discovered rbegin pointer …  |
| | I want to give my application data folder kaspersky antivirus like security. Where I can add a folder but cant change any content or create any file. I even gave the current user full control security privilege but it just does not working only for this kaspersky data folder. I …  |
| | Hi, I have to make a program that takes an input text file and reverses the contents of that file, and outputs that into another text file. I am new to stacks, but what I have so far nothing happens, it just outputs a blank text file. I just wanted … |
| | ok well i'm having issues sending a char array to a listbox. To do a little explanation on the code itself... The point of this part is to take a hexidecimal string and convert it to a alphabetical string (this part works and has been tested in a console application). … |
| | I need help with a homework, i been working in this for the past 2 weeks and can't get it to work. I need to make a function that will allow me to create a dynamic array and them expand the old array of 3 subcript into the new array … |
| | Hello, I'm new here and not quite sure what it means by wrapping code in code tags so for my future posts can someone let me know how this should have been formatted so it would be a correct post? My question is I have a program I am writing …  |
| | Hey everyone :) I'm writing a program for my class that has the user input 5 test scores and then from the inputted numbers, return the letter grade. I've begun writing the LetterGrade function, but it's not working. I'm getting a strange array of numbers/letters instead of the actual letter … |
| | Those some parts of my program. I write the problem at the buttom [CODE]void main() { string option; warehouse car[2]; car[0].inputCar("lamborgini",true); car[0].showCar(); car[1].inputCar("ferrari",false); car[1].showCar(); //display the choices of the user cout<<"a) Show number of modified"<<endl; cout<<"b) Show list of modified"<<endl; cin>> option; switch (option[0]) { case 'a': countModified(); break; case …  |
| | Hi guys, I'm trying to link a Micro-controller board to my C++ program to control the relays on it. The vendor provided a test software in VB that involved entering the COM port number (4 in my case) and clicking a button to sync up with it, the full software … |
| | can anyone tell me whether i can access databases using c++ i want to connect to ms sql in in c++ program. i hve to create tables in MSSQL using data available in c++ program. very urgent thanks geeta |
| | I've written a C# app in Visual Studio 2008 C# Windows forms which fetches the text html from a webpage and it works fine in most cases. I needed the multipart/form data, as the main interest is sending text queries back and forth from a test server in Visual Studio. … |
| | i need to make a grading system for our project...can somebody help me?  |
| | How do I add a manifest file to my dev c++ project? I need the manifest so when a user clicks on my application they're prompted with the "run as administrator" popup. |
| | //Cursor.h [code=c] #ifndef CURSOR_H #define CURSOR_H #include <stdlib.h> #include <iostream> template <class Object> class Cursor; // Incomplete Declaration template <class Object> class CNode { public: CNode( const Object & theElement = Object( ), CNode * n = NULL ) : element( theElement ), next( n ) { } Object element; … |
| | I am pretty new to programming. I am trying to write a code that counts the occurrence of a word, lists it and also the number of times it appears in a given text. This is what I have, but I can not get it to print the word once … |
| | Hi guys! Can anyone help me? Im a new to this site and C++ environment. Im running a Microsoft Visual C++ express 2010 and I write a code in 3 separate files. 1 of them is a header file with an extention .h. and 2 of them are .cpp files. … |
| | [CODE]result = number1 / number2;[/CODE] I am new to C++, but I have some knowledge in Java. What my program does is, the program asks the user two numbers. The user could only select, one, two, or zero. Then the user would select an arithmetic operator: plus, minus, times, divide. …  |
 | Hi everyone. This is my first post. I have a project to develop an assembler for my studies. The problem is I don't really know how the assembler really works and how can I develop one. It is assembler for mc68000 assembly language. If possible please provide me with a … |
| | My code generate a Hollow Square with user given width and Height but when the user is prompted to continue or stop it generates a Run-Time Check Failure #2 - Stack around the variable 'ans' was corrupted. Here is my code, any help much appreciated. [code] // SadaMiguel_RectangleFinal.cpp : Defines … |
| | wrong reading. wht I want is name and surname=burcin erek number=783389 but output name and surname=burcin number=erek it is so funny but no solution. #include <cstdlib> #include <iostream> #include <fstream> #include <conio.h> #include <string> using namespace std; void file_read() { string name1; string numb1; ifstream f("file1.txt"); f>>name1>>numb1; cout << "name … |
| | I'm trying to put a 2 dimensional array in a queue... How could I do that? #include<iostream> #include<queue> using namespace std; struct state { int puzzle[2][2]; }; int main() { state p; p.puzzle[0][0]=1; p.puzzle[0][1]=2; p.puzzle[0][2]=3; p.puzzle[1][0]=8; p.puzzle[1][1]=0; p.puzzle[1][2]=4; p.puzzle[2][0]=7; p.puzzle[2][1]=6; p.puzzle[2][2]=5; queue<int> Queue; Queue[front] = p; while(!Queue.empty()) { cout<<" "<<Queue.front()<<endl; … |
| | hi sir i know c and c++ but i don know how to make softwares , i know about softwares models and all i can make progrnms as well but i want to know how can i make those program interact with my OS ,for example an antivirus software |
| | hi there, i need to create a function that reads a series of numbers from a file and returns to the main function the mean of those numbers. I am having trouble with the syntax of array parameters and arguments (i don't know how to call the function if it … |
| | Hi everyone, I'm trying to program a game in C++ using SDL and i want to get peoples names. its not working though, and I'm really confused as to [B]why[/B]. :?: i'm using code like the following: [B]StringInput.h[/B] [CODE] class StringInput { private: std::string str; SDL_Surface *text; int x,y,r,g,b; SDL_Color … |
| | Hi everyone at daniweb! First off I want to say thanks for starting this awesome homepage, though googleing ive found many clues and answers in here for my projects, things that were left undocumented or just poorly explained by those books that ive used. But now, onto the issue! What … |
 | In the past when I've done this: [code] int function(int a) { if(a == 2) { return true; } else { return false; } } [/code] the compiler has complained that the function may not return a value. I've fixed this by adding: [code] int function(int a) { if(a == … |
 | Hello. im having a small problem creating a tree. im not sure where im going wrong. Can anyone please help? Thanks. Here is the code: [CODE] #include <stdio.h> #include <stdlib.h> struct tree_el { int val; struct tree_el *right; struct tree_el *left; }; typedef struct tree_el node; void printout(node *tree) { … |
 | Hi, I'm in a beginning class in C++ and we need to make an assignment that inputs a file, prints it to the screen, and then prints it to the screen again with an underscore every 5 blanks. I got the last part to work, but I can't get it … |
| | Hello All, First of all, I am beginner so please bear with me. :) I want to extract data within the table from a html code. Lets consider HTML code to be in a file. I have read the data to a variable. Now using this variable I want to … |
| | Have another problem with an OBJ model format converter I'm making. As a test, I want to read in data from an OBJ file, and write it out in a different format, and then the other way around. The problem I currently have is that I want it to be … |
| | I want to know how to create a makefile so that I dont have to type in the files I am linking together. Also is it possible to use a make file which will run two files. I have a fraction.h file and fraction.cxx (implentation file) I have a main.cpp …  |
| | Hi all, I'm sure this is a trivial question for the veterans (and the newbs maybe as well). But I just can't find a straight answer to it. So here it goes: I have my main.cpp file, and 2 more files, custom.h and custom.cpp. Obviously, custom.h would contain declarations, prototype...etc, … |
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