51,593 Topics
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 | Hello Everybody, IS there anyone in this forum who have worked on Elliptic curve cryptosystem/cryptograpgy? I want to discuss something regarding ECDSA, i have perfectly implemented ECDH and have a problem in implementing ECDSA. Regards! |
| | Hey guys, Im still new to programming and need help with something. I need to read a line of numbers from a text file into an array. I will be given this in a text file and need to store them in an array for later use. 0 1 2 … |
| | Can someone please copy/paste the following source and look at the error message? I am receiving too few arguements to function error. Please help! //preprocessor directive #include<iostream> #include<fstream> #include<iomanip> using namespace std; //global variables/constants, function prototypes void headerfn(); // void fn without parameters void namefn(string fname, string lname); // void … |
| | Hey there! Hope you guys can help me out.. Here is my assignment: 1 2 3 2 3 1 3 1 2 Program Requirements: The program will prompt the user for the order of Latin Square that the user desires (again, the above is order 3, which means 3x3; an …  |
| | Hey all, first off, I'm NOT looking for answers to my homework by any means. I am rather looking for guidance. I want to understand the material rather than just have the solution handed to me. Therefore, here's my problem: I have a project where I have to read info … |
| | I recently have a thread open, but I feel it is starting to get too long, and the topic is kind of old since I have a new problem now. What I am trying to accomplish here is determining whether a word is a palindrome using queues. My program compiles … |
| | i ve two directories and i ve to write a c++ code for getting files names of both the directories printed side by side .(Assume equal no.of files in both directories) |
 | Hi, I am creating a crackme (or possibly keygenme, if i feel like it) that realys on a IsDebuggerPresent call to see if the user has olly or another debugger open analyzing it. My current code reads as follows: [CODE]#include <windows.h> #include <stdio.h> #include <iostream> #include <ctime> using namespace std; … |
| | Hello everyone, I am having some trouble trying to get my circularly linked list to work. It does compile but it gives a Segmentation fault. This is my first time learning something like this and I don't really know whats wrong. If anyone could possibly point out some problems it … |
| | *EDIT* IT IS A SEGMENTATION FAULT NOT BUS ERROR (anyway to change thread title?) I am trying to make a deep copy of a linked list, but whenever I run a test of the constructor i get a "Segmentation Fault". I tested the "Append" method and it works fine. I … |
| | Ok, I am trying to figure out how to purse this current project which deals with dynamic allocation and linked list Here is the information I am given the following two structs [code] struct employee { int ssn; string name; float hours; assignment * list; }; struct assignment { string … |
| | Hello I am trying to determine whether a word is a palindrome or not using queues in my program below. However, I am currently having a problem. When I compile and execute my program, the output screen comes up and disappears very fast. Afterwards, I ran the program using the … |
| | I have an Excel file with M columns (A, B, ..., M) that i need to open to extract it's contents using a visual c++ program. Does anyone know how to do it? The last row of the file is line 423 (first row contains the headers of each column). …  |
| | For example, when searching string_1 in MySQL table found NO RESULT, then want to add string_1 into database table. Using code below: while (res->next()) cout<<"This word means "<<res->getString(2); if (res==0)/[U]/I use this if statement , but don’t work![/U] { cout<<"Would you like to add this word to database?"<<endl; } What … |
| | [CODE]#include <iostream> using namespace std; int main() { char flip; int coin, flipnum, flipint, count, evod; string you, enemy; int hityou, hitenemy, youhealth, enemyhealth; srand(time(0)); //makes rand work cout<<"CHOOSE YOUR MANBEAST: "; //Choose a fighter getline(cin,you); youhealth = rand() % 15 + 95; //Your fighter's health cout<<endl<<endl<<"WHO SHALL CHALLENGE HIM?: …  |
| | Hello all, I'm working with exponentiation and I have an assignment to write a code for loop initialization and loop body but unfortunately, I don't even know what that means. I was given the following information: Input x // can be any float Input y // has to be a … |
 | Hello. I'm pretty new to debugging with visual c++. I've tried reading some tutorials but none of them seem to cover what my program is doing. i enter the command arguements for my code which is the file ./input.txt. I then get the following error. [code] 1>c:\documents and settings\jennifer\my documents\visual …  |
| | Hello,all! I am attempting to make a program in which tetris music is played. However, to get the full effect, I need more than one beep at a time. I cannot use the getsound thing either, i am not allowed. It has to be using 'Beep()'. Is this possible, and, … |
| | //Stephen Igbinedion //CMPS 1043 //November 10 //This program plays multiple games of Simple Simon Bridge #include <iostream> #include <iomanip> #include <fstream> #include <string> using namespace std; ifstream infile; ofstream outfile; void Hand(char c1,char c2,char c3,char c4,char c5); int winner(int R_bid, int W_bid,int I_bid); int main() { int optimus; char gameplayer, … |
| | I think I'm having an issue with my use/understanding of vectors in C++. Any advice would be greatly appreciated! I'm trying to use a vector of vectors of floats to store data coming from an input file. I know that, at most, a line of floats will have 14 elements. … |
| | Hi, Can someone suggest how we can get the mac address of the router in c++. Thanks, Arun. |
| | I got a program that works OK, but now I need to adapt it to macedonian and I don't have a clue how to make it work... Am I suppose to include some encoder of some sort?? |
| | [CODE]#include <iostream> #include <sstream> #include <fstream> #include <string> #include "Python.h" using namespace std; #define tP PyRun_SimpleString(pyCom.c_str()) double func(double x); int main() { //file to write numbers to ofstream file; file.open("numCache.txt"); //string for int to string conversion string temp; stringstream output; //string that is read from console string numCache; //returned number … |
| | Hi, Does anyone know how i could get a list of all files in a given directory given the directory's path using c++? |
| | Hey there, wonder if you can help me.. I have three classes: 1. Person 2. Accounts 3. Purchases (Accounts and Purchases both inherit from Person) You don't need an account to make a purchase but if you do you'll enter your: name, address etc.. The problem I'm having is association. … |
| | I don't know if this is the right board for this but here goes I have finsihed writing my program and it compiles fine on windows using the MinGW compiler. Ihave it compiling and running fine I tried compiling on a linux machine to create an executable but i an … |
| | i need to write a C++ or Java program that will receive as input an IP Address in decimal format 192.168.2.125 The program will identify and print the class of that IP according to the first octet. Then it will perform binary bitwise AND operation between the IP address and … |
 | If I have the following setup: [code] Point* MyPoint = Object->GetMyPoint(); if(MyPoint->GetValue() != 2) do something; else do something else; [/code] If MyPoint is NULL or invalid, the MyPoint->GetValue() will cause a segfault. This should fix it: [code] Point* MyPoint = Object->GetMyPoint(); if(MyPoint) { if(MyPoint->GetValue() != 2) do A; else … |
| | I tried to print all the possible combination of members of several vectors. Why the function below doesn't return the string as I expected? [CODE=c] #include <iostream> #include <vector> #include <fstream> #include <sstream> using namespace std; string EnumAll(const vector<vector<string> > &allVecs, size_t vecIndex, string strSoFar) { string ResultString; if (vecIndex …  |
| | Pls help me out i am using visual C++6.0 enterprise edition.... [code=c++] /*--------------------------------------------------------------------------*/ /*--------------------------------------------------------------------------*/ // Source file originally created by PegWindowBuilder // // // Class Name: ecgclass // // Notes: /*--------------------------------------------------------------------------*/ /*--------------------------------------------------------------------------*/ /* WB Auto-Generated Start (1) */ #include "peg.hpp" #include "ecg_res.hpp" #include "ecgone.hpp" extern PegResourceTable Default_Theme_ResourceTable; /* WB Auto-Generated …  |
| | hi i want 2 know ho to make Instant Messenger client with c++. pls. provide web resources if available.., .. pls.. |
| | Hello all! Looking for some help with this, I've been using a book to make an sql database to store names, and was hoping to use a button to randomly select any of the names in the database to be allocated to one of two machines. Also there is a … |
 | hi :) I wrote a program that will determine the name of the card by simply enter the code notation.. For example if the user enter 'Q S',the program will display queen of spades... I using two variable with the type string to allow the data entered which is note1 … |
| | i try to send the data to printer using comm port. I can open the port, but the printer still no response. I'm confuse why the system display No data (refer printf("\nNo data!\n"). Pls help me.. |
| | how randomise function works in c++ and how can output of the program be found when program contains randmize() function. |
| | Hi, I'm a beginner to C++. I'm writing a linked list template but I get this error: 1>Tester.obj : error LNK2019: unresolved external symbol "public: __thiscall List<int>::~List<int>(void)" (??1?$List@H@@QAE@XZ) referenced in function _main 1>Tester.obj : error LNK2019: unresolved external symbol "public: __thiscall List<int>::List<int>(void)" (??0?$List@H@@QAE@XZ) referenced in function _main I'm using Visual … |
 | Figure I might as well go ahead and clear up that this is obviously a school assignment. I have completed a somewhat decent amount of code (not saying I have a lot of faith in it's correctness tho) and need assistance to figure the rest out. I'm at a complete … |
| | [CODE]void menu() { int userinput; static value *head = NULL; static value *tail = NULL; cout << "1 - Insert value" << endl; cout << "2 - Print list" << endl; cout << "3 - Delete value" << endl; cout << "4 - Quit" << endl; cout << "5 - … |
| | Hello! I'm getting this infamous problem: [B]Segmentation fault (core dumped)[/B]. Not sure what's going on. ='( Please help! I've red-ed and bolded the parts that I think are problems. In the following class, I'm trying to create a class called 'BucketHashTable'. I want to create an array of known size … |
| | Hey, so I have to make a program that has to multiply two 3x3 matrices (among other things). I used classes to do the project, but I just can't seem to get this multiplication to work. Here is my code so far: [code]void matrix::mult(const matrix& u) { double c[9]; double … |
| | I am very new to C++ and have the slightest idea where to start. Here are the directions for the project I'm doing. Below is a copy of the program that I have so far. An internet service provider has three different subscription packages for its customers: Package A: For … |
| | Hello, please help me I am trying to write program that allows a user to enter 10 numbers, stores in an array and then displays each with it's square (no * no) and cube (no * no * no), I am able to get square but cube in not working, … |
| | I'm making a header file to make, sort, and print a vector using heapsort. I keep getting a compiler error about my const char[100] array. Probably something really simple I'm missing...I hope. In function `void build_list(std::vector<T, std::allocator<_CharT> >&, const char*)': 16 expected primary-expression before "const" 16 expected `;' before "const" …  |
| | Hi there, Please help me. I am having problem trying to include Checkbox in 1st Column in DataGrid for all the Rows. Being a newbie and I am struggling doing it. I need your help. |
| | How do I find the Rand_Max on my system using C++ code? Just a theory question. |
| | Ok so for a project in my comp sci class we have to make a banner using a field of stars. We must enable the user to enter the number of rows(at least 1 but no more than 5) and columns(at least 5 but no more than 50), as well … |
| | I am having a problem with my program. We are supposed to ask for two numbers as input then half the larger and double the smaller. If the larger is odd then the smaller is added to an accumulator. My problem lies (i'm guessing) somewhere in the functions. Here is … |
| | Hello, So I'm just starting to learn c++ and am trying to make a tic tac toe game. My problem is where it says (board[pMove - 1] != 'X' || 'O'); it's supposed to see if there is already an x or o in the spot and then place the … |
| | Hey guys I am having issue with declaring an iterator of type vector. I know there are other errors within this file but I am more concerned with why these declarations arent working. Everyone gives me an error saying something along these lines for each iterator heapsort.h:45: error: expected `;' … |
| | [CODE] #include <cstdlib> #include <iostream> #include <string> using namespace std; int main() { string names[] = {"Jim", "Rob", "Sam", "Tim"}; int i; i = 0; string stain; stain = "f"; while (stain == "f") { if (names[i] == "") { stain = "p"; } i += 1; } for (int … |
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