49,757 Topics
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| | hii, this is my .h ,file : [CODE] /* * sortedlist.h * * Created on: Jan 16, 2011 * Author: saeed hardan */ #ifndef SORTEDLIST_H_ #define SORTEDLIST_H_ #include <iostream> #include <functional> namespace mtm { template< typename T, typename Compare = std::less<T> > class SortedList { private: struct ListNode { ListNode … |
| | Hello I have a problem with reading the coordinates of points which are extracted from (..txt ) file.I have read the file with ifstream but I don't know how to use the information then. Thanks in advance the point are in File as followed : u:1.2000 v:4.5400 u:2.5450 v:6.4500  |
| | I have a program that accepts multiple lines of strings for a variable and accepts another set of multiple strings for the next set of variables, and so on, each seperated by a free line i.e.\n\n How do I write such a program? |
| | [CODE]bool is_prime(int a) { if(a==1){return false;} if(a<4){return true;} if(a%2==0){return false;} if(a<9){return true;} if(a%3==0){return false;} int i; for(i=5;(i*i)<=a;i+=6) { if(a%i==0){return false;} if(a%(i+2)==0){return false;} } return true; } [/CODE] critique welcome. |
| | main.cpp [CODE] #include "includes.h" #include "LOGMSGs.h" int main() { LOGMSG("TEST"); getch(); return 0; } [/CODE] MYSQLcon.cpp [CODE] #include "LOGMSGs.h" int Mysql() { MYSQL *con, mysql; mysql_init(&mysql); const char * host="localhost"; const char * user="test"; const char * pass="test"; const char * db="NewServer"; con = mysql_real_connect(&mysql,host,user,pass,db,NULL,NULL,NULL); if (con == NULL) { … |
| | i am a student and i use turbo c 3.0 and 4.5 its compulsory for the computer programming course but there is one error i get when try to run a code having graphics.h on 4.5 that BGI graphics not supported under windows but the same code runs fine on …  |
| | Good evening. I've recently had an assignment to create a doubly linked list that is self contained. This means that the entire list is contained in a single class - the class acts as both the list and the node. I've completed everything and have gotten to my final task … |
| | logmsg.h [CODE] void LOGMSG(string logmsg,...)//... { stringstream name; name<<"test "<<TM.years()<<"-"<<TM.month()<<"-"<<TM.day()<<".log"; ofstream log; log.open(name.str(), ios::out | ios::app); log <<TM.hour()<<":"<<TM.mint()<<":"<<TM.sec()<<" Message: "<< logmsg<<endl; } [/CODE] main.cpp [CODE] int main() { int a = 100; LOGMSG("type test!!",a,"times"); }[/CODE] but it's only wtite into the file "type test!!" while i want it to type … |
| | I'm quite new to the standard template library, I'm trying to understand how to use them with my code. There may still be some logic errors in my code. However I am trying to sort out my syntax errors. One big one is this: type/value mismatch at argument 1 in … |
 | Hi there, it's been awhile :$ I have just completed a small easy exercise which was to create an Account class, providing a constructor to receive the initial account balance, add some money to the initial balance and withdraw some money (providing that the amount of money to withdraw is … |
| | Hello Vivayan! Its taken me this long to understand your sophisticated program you gave me using STL (Standard Template Library) iterators, container classes, algorithms, and the works! I’m truly grateful for the time you took to develop this program for me, and it inspired me so much I’ve decided to … |
| | I have been doing a lot of reading online about memory stream types, and I am trying to avoid using the gcnew MemoryStream() from the System header in this program. Here is an example of what I need to be able to use it for. [CODE]var reader = new BinaryReader(new … |
| | [QUOTE]You said the function returns just a single character yet you are trying to return a character array. You can't have it both ways. What you should have done is [icode]char* getEmpName()const[/icode] -- notice there is a * after char to indicate it will return an array of characters.[/QUOTE] Hi, … |
| | I am having a mental block with this LINQ expression and cannot seem to figure out how I need to convert it to C++. [CODE](var item in inTables.SelectMany(table => table.Items))[/CODE] This code applies to the following piece of code [CODE] foreach (var item in inTables.SelectMany(table => table.Items)) { Trace.Assert(oldDrs.Position == … |
| | Hey guys, This is only my second thread on DaniWeb and I am a beginner programmer. My code looks like this: (really easy to understand and shouldn't need any further explanation besides the fact that I need help understanding why when i give an answer related to the 'else' loop, …  |
| | I don’t know why my operator += and operator + string class member functions are taking so long to do their job and are so inefficient compared to the Standard C++ Library String Class. Its not that they don’t work; its just that they are slower by a factor of … |
| | Hi, The program below takes input from user the marks of 10 students in 6 subjects and gives output as: [output] Maths Phy Chem Bio C.Sc Eng Tot Stud_Avg studentname1 10 20 30 40 50 60 210 35 studentname2 20 30 40 50 60 70 270 45 -- -- studentname10 … |
| | I tried many codes in internet for this but it says Access violation. Can somebody provide me the code snippets in C++ and C# for this?  |
| | beth = ted; // beth equal to ted ( 1776 ) beth = *ted; // beth equal to value pointed by ted ( 25 ) [B]beth = &ted; // is this statement result in a compiler error? if beth is an int variable[/B]  |
 | Hi, I am in need of a good reference for C++/CLI. Right now I need to know how to exit the main loop of a form, such as if the user clicked the 'X' at the top right. Nevermind, the function Close() is what I needed. |
 | Ok.. so uptil now I've been using the DOS compiler and IDE for C++, version 3.0 by borland...(which is like ancient history).. But now I think it's about time to upgrade :P So since I have been away from C++ for a loooooong time, I need to start from scratch. …  |
| | I have a program which needs to take the logical drives returned from the GetLogicalDriveString function and store them in a string array for later use in a filepath. I tried doing this directly and it failed. Here's my code: [CODE]#include "stdafx.h" #include <iostream> #include <io.h> #include <time.h> #include <string> …  |
| | Ok, so there is a place where the code is being converted into ASCII standard, and then being converted back I believe. I think I know how to do it, but I wanted to get help to make sure that when i am testing for bugs later that this isn't … |
 | Hello everybody.Say i have a template declaration of a class: [code] template <DWORD Style=BS_DEFPUSHBUTTON, LPSTR Type="button"> class WndObj { WndObj (); }; [/code] Now in the cpp file the definition should look something like this: [code] template <DWORD,LPSTR>WndObj<>::WndObj () {} //so i can go ahead and typedef WndObj<> Button; [/code] … |
| | My c++ program asks for input of a integer type if the user inputs a character/string then the program crashes is there another method for this or another way to fix it thank you. |
| | [CODE]#include <cstdlib> #include <iostream> #include "ccc_time.h" using namespace std; int main(int argc, char *argv[]) { double r[10]; Time now; int seed=now.seconds_from(Time(0,0,0)); srand(seed); for (int i=1; i<=10; i++) { r[i]=(rand()%10+1); cout << r[i] << endl; } system("PAUSE"); return EXIT_SUCCESS; } [/CODE] This generates numbers between 1 and 10. What do I … |
| | I know that arrays have to be given a size when using them, so I tried to, but this piece of code doesn't seem to want to be accepted by the compiler. data is a std::vector<char> so i tried using the .size() function to use the size of the vector … |
| | In a statistics book there is an algorithm of generating pseudo-random numbers with uniform distribution [0,1]. It says: I. Enter an initial variable X positive integer. II. Multiply X by variable "a", which should be at least 5 digits long. III. Divide a*X by value p (positive integer). IV. Take … |
| | [CODE]Table table; table.UpdateSeats(false, false, false, false, false, false); std::list<bool>::iterator Test = table.GetSeats(); std::cout << "The current status of seats: "; for (int i = 0; i < 6; ++i) { std::cout << " " << *Test; ++Test; std::cout << std::endl; }[/CODE] No compiler errors or warnings, just a Debug Assertion … |
| | I have the following code: [CODE] #include "stdafx.h" #include <windows.h> #include <GdiPlus.h> #pragma comment( lib, "gdiplus" ) int GetEncoderClsid(const WCHAR* format, CLSID* pClsid); void gdiscreen(); void gdiscreen() { using namespace Gdiplus; GdiplusStartupInput gdiplusStartupInput; ULONG_PTR gdiplusToken; GdiplusStartup(&gdiplusToken, &gdiplusStartupInput, NULL); { HDC scrdc, memdc; HBITMAP membit; scrdc = ::GetDC(0); int Height = … |
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