49,757 Topics
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| | Could anyone please explain what memory mapped files are and why this method is better then reading a file with I/O operations when needed? i've read msdn...wiki...and im still confused at why i cant understand how this works/ what it is doing exactly -thx  |
| | Element.h:15: error: using typedef-name ‘Element’ after ‘struct’ TrainToList.cc:6: error: ‘Element’ has a previous declaration here I understand that Element is getting defined twice but I do not know how to fix this. I must use Element as Car (or vice-versa??:confused:). Please suggest a fix to this problem. Now here are … |
| | Hi all, i was wandering if someone good explain to me about clr? what are some advantages or disadvantages of programming c++ with clr, what are the main differences if there are any? If I understand it right clr programming is using the .NET framework, but could someone please give … |
| | 1. Are memory adresses a certain size? I've seen some that have 6 characters after the 0x and some that have 8 after the 0x 2. A pointer like this: int *pointern does what exactly? Selects a location in the memory? Randomly? Or maybe like the first availible memory adress? … |
| | What im trying is to input 'yes' to continue and reset all values or 'no' to exit the program but i have tried to figure it out but im having trouble please help.thanks [CODE]#include <stdio.h> #include <stdlib.h> #include <math.h> int main() { float num1,result; char sym; printf("Calculator Is ON\n"); do{ … |
| | Hi I wrote a code for Galerkin Finite Element .The program runs with no error but have some problem breaking the loop also the results are all wrong .Can anyone please help me? This is my first time writting aprogram and I am so confused. #include<stdio.h> #include<stdlib.h> #include<math.h> #define Limit … |
| | I have the coordinates of n points and I need to calculate the distance between each point until the other points. 2 0 3 0 0 5 2 1 ... ... ... I am beginner in C + + and I've worked a lot before asking for help. Already, I …  |
 | Ok so I have this project in ming for along time now. Basically I have created a console app that works as a calculator by using mathfunctions from a DLL I also have created. Now the problem is I want to make it so that people can create their own … |
| | hello there, im given an assignment to basically prompt user to enter name, start time, end time, am or pm, and the pay rate and from that information i need to calculate number of hours worked and how much they get paid for the day, but im very stuck. please … |
| | Hey i wanted to know if there's a program that shows u a pattern on how they got the number if i give them 3 examples? for Ex: 1) 35777903801230601 (Encrypted) = 46071642 (Decrypted) 2) 35777903248036801 (Encrypted) = 43975216 (Decrypted) 3) 35777903508068601 (Encrypted) = 91756761 (Decrypted) |
| | I have an assignment until next week and i don't know hot to complete it In the program in c we have to help a cat escape from a dog which has double speed. The program works as follows : the data of the program are read from the file … |
| | Hello! I am writing a code of linked list in which user can insert or delete names but the list must remain sorted alphabetically. I have written the given piece of code by now but it is not correct. Please help me out. I took help from this link: [url]http://stackoverflow.com/questions/2941368/sorting-names-in-a-linked-list[/url][code]//function …  |
| | Hello, I am attempting to display a PDF in Gtk (C++) and don't know how. I have searched the web for a tutorial yet I cannot find one please, may someone tell me how? Thank you. |
| | what's the difference between: [CODE] // main.h #ifndef X_H #define X_H #include "point.h" // supposing that point.h contains the declaration of Point class class MyClass { private: Point m_Point; //... }; #endif // main.cpp #include "main.h" //... [/CODE] and [CODE] // main.h #ifndef X_H #define X_H class Point; class MyClass … |
| | Hey everyone :) I've been working on the first part of a program which I'm doing in 4 steps. Here's the first step which I have completed: Function inputAndValidate This function inputs the time. The time should be entered as two separate values for the hours and minutes. Do not … |
 | I'm making a system cleaner on C++ and what would be the best project to use? @ Windows forms application @ Empty project @ Win32 project @ Win32 Console application Note: This project has to have interface it's not console based! Reason why there is console app is you could … |
| | I'm creating a class for a text analysis for letter frequency. I am trying to compile it, but i'm having some problems. Could someone look at this for me? This is what I have so far: [CODE] class Analysis { private: string letters[26]; string text; int count; public: Analysis() { …  |
| | Hi I am trying to store an array into a file. I have tried a few ways but I end up with an extra line at the end of the file. The only way I can do this without the line is by writing [code] ofstream myfile("Stock.txt"); if (myfile.is_open()) { … |
| | [ICODE]/*write a program class Rectangle . the class will have two data member to coodinates of upper left & lower reght corner of rectangle. these two data member will be object of point class. 1-The rectangle class should following function. 2-A default destructor to print a messagewheneveran objectis distroyed 3-a … |
| | I am struggling with this assignment to long i need someone to tell me what am i doing wrong Write a program with three functions: upper, lower, and reverse. The upper function should accept a pointer to a c-string as an argument. It should step through each character in the …  |
| | I need to write a program that calculates the squares of all numbers that are contained in a file of floating point numbers. The obtained new numbers form a new file. Like this : if the file contains the numbers 1, 2.5, 0.1, the numbers 1, 6.25 and 0.01 form … |
| | I made the Huffman code algorithm... and made the tree as it should be made.. The problem comes how do I print the code from the tree.. Theoretically I know the code generation.. But how to implement in C++.. Using TC. The following tree is constructed for this data [CODE]Alphabet … |
| | i've seen in some sources that some classes have Getters and Setters even for public data members [CODE] class Example { private: int m_ID; public: string m_Name; int m_Age; Example( ); ~Example( ); void SetName( string nName ) { m_Name = nName; } void SetId( int nID ) { m_ID … |
| | [CODE]/* Beginning Game Programming, Third Edition Chapter 4 Load Bitmap program */ #include <windows.h> #include <d3d9.h> #include <d3dx9.h> #include <time.h> #include <iostream> using namespace std; //program values const string APPTITLE = "Load Bitmap Program"; const int SCREENW = 1024; const int SCREENH = 768; //key macro #define KEY_DOWN(vk_code) ((GetAsyncKeyState(vk_code) & … |
| | write a program class Rectangle . the class will have two data member to coodinates of upper left & lower reght corner of rectangle. these two data member will be object of point class. 1-The rectangle class should following function. 2-A default destructor to print a messagewheneveran objectis distroyed 3-a … |
 | What would be a common strategy for using DLLs coded in native C++ in C#? I'm not really finding much good information about it, other than writing the DLL in C. |
| | I'm brand new to C++ ,I've written following code for finding a number's factorial,Can you please let me know how to write it more elegantly ? [CODE]#include <iostream> using namespace std ; main () { int num = 0 ; // declaring variables double result = 1 ; long int … |
| | I'm getting a LN2019/LN1120 error, and I have no clue why... any suggestions? [CODE]#include <iostream> #include <string> using namespace std; class Time { public: Time(int hour, int minute); Time(); void setHour(int); void setMinute(int); int getHour(); int getMinute(); void incrHour(int); void incrMinute(int); void printTime(); protected: int hr, min; }; Time::Time( int … |
| | Hi, i am trying to write a program which calculates the sum of the prime numbers below a specific limit using an algorithm called the Sieve of Eratosthenes(Wikipedia it). I am getting an error though when i run my program. It says debug assertion fail and something how the iterator … |
| | Hello I have this code below where I use the method ->ReadToEnd() to read in the whole file into the String test. The thing is that I have to use the method ->ReadToEnd() in this case because I use another class that only have this functionality. I cant read line …  |
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