NeoEGM.com » Console https://www.neoegm.com Knowledge is inside Mon, 08 Jul 2024 05:38:01 +0000 en-US hourly 1 https://wordpress.org/?v=4.2.39 Simple C++ List Class https://www.neoegm.com/tech/programming/c-cpp/simple-list-class/ https://www.neoegm.com/tech/programming/c-cpp/simple-list-class/#comments Tue, 18 Aug 2009 20:55:36 +0000 http://www.neoegm.com/?p=976 Related posts:
  1. Simple C++ String Class
  2. cppMemDbg – Easy to use C++ memory leak detection library
  3. Attendance Control
]]> Just as I published some days ago the Simple C++ String Class as a C++ learning exercise, now I am freeing a Simple C++ List Class.

The standard library has a list class. But, while learning, it’s a good idea to know how to develop your own list class.

That’s why I made the List class. It’s not intended for professional projects (for them, you should use the standard library’s list), but as help to learn C++.

template <class TYPE>
class List
{
	/* ... */

public:
	//Construction and destruction
	List() { /* ... */ }
	~List() { /* ... */ }
	
	List(const List& rlList) { /* ... */ }
	
	//Assignment operator
	List& operator=(const List& rlList);

	//Information
	int Length() { /* ... */ }
	bool Empty() { /* ... */ }

	//Element managing
	int Add(TYPE& rtData);
	TYPE* Elem(int nPos);
	bool Delete(int nPos);
	void DeleteAll();
	
	//Search
	int Find(TYPE& rItem, int nStartAt = 0);

	//Operadores
	TYPE& operator[](int nPos) { /* ... */ }	//Elem
	int operator<<(TYPE& rdData) { /* ... */ }	//Add

protected:
	void FreeList();
	void Init() { /* ... */ }
};

//Output
template <class TYPE>
std::ostream& operator<<(std::ostream& oStream, List<TYPE>& rlList);

This is a sample project made to explain the List class usage.

#include <iostream>
	using std::cout;
	using std::cin;
	using std::endl;

#include "List.h"
#include "String.h"

int main(int argc, char *argv[])
{
	cout << "List sample project" << endl;
	cout << "-------------------" << endl << endl;


	//-----------------------------
	cout << "> Creating a list of strings... An empty string finishes the list..." << endl << endl;

	List<String> lStrings;
	String sTmp;
	
	do
	{
		cout << "> String " << lStrings.Length()+1 << ": ";
		cin >> sTmp;
		
		if (sTmp.Length())
			lStrings.Add(sTmp);
	} while (sTmp.Length());
	
	cout << endl << "> Entry finished. " << lStrings.Length() << " string(s) loaded." << endl << endl;
	
	cout << "> Printing list..." << endl << endl;
	
	cout << lStrings;

	cout << endl;
	//-----------------------------
	
	
	//-----------------------------
	do
	{
		cout << "> Type a string to find in the list (exact match) [empty = end]: ";
		cin >> sTmp;

		if (sTmp.Length())
		{
			int nFound = lStrings.Find(sTmp);
			
			if (nFound != -1)
			{
				lStrings.Delete(nFound);

				cout << "> String \"" << sTmp << "\" found at position " << nFound+1 << " and removed." << endl << endl;
				
				cout << "> Printing list..." << endl << endl;

				if (!lStrings.Empty())
					cout << lStrings;
				else
				{
					cout << "[Empty list]" << endl << endl;
					break;
				}
			}
			else
				cout << "> String \"" << sTmp << "\" not found." << endl;
		}
		
		cout << endl;
	} while (sTmp.Length());
	
	cout << endl;
	//-----------------------------

	//-----------------------------
	cout << "> Now getting a bit more complex... Let's create a list of lists of strings... An empty string finishes the list and an empty first string finishes the list of lists..." << endl << endl;

	List< List<String> > lLists;
	List<String> lTmpList;
	int nStrings = 0;

	do
	{
		lTmpList.DeleteAll();
		
		cout << "> Loading list " << lLists.Length()+1 << "..." << endl;
		
		do
		{
			cout << "\t> String " << lTmpList.Length()+1 << ": ";
			cin >> sTmp;
			
			if (sTmp.Length())
			{
				lTmpList.Add(sTmp);
				nStrings++;
			}
		} while (sTmp.Length());
		
		if (lTmpList.Length())
			lLists.Add(lTmpList);
	} while (lTmpList.Length());
	
	cout << endl << "> Entry finished. " << lLists.Length() << " list(s) loaded, " << nStrings << " string(s) loaded." << endl << endl << endl;

	cout << "> Printing lists (standard method)..." << endl << endl;

	cout << lLists;

	cout << endl;
	
	cout << "> Printing lists (custom method)..." << endl << endl;
	
	for (int i = 0; i < lLists.Length(); i++)
	{
		List<String> *plList = lLists.Elem(i);

		if (plList)
		{
			cout << "- List " << i << endl << endl;
			cout << *plList;
			cout << endl;
		}
	}
	//-----------------------------

    return 0;
}

And this is its output:

List sample project
-------------------

> Creating a list of strings... An empty string finishes the list...

> String 1: Test 1
> String 2: Test 2
> String 3: Test 3, a little bit longer
> String 4:

> Entry finished. 3 string(s) loaded.

> Printing list...

Test 1
Test 2
Test 3, a little bit longer

> Type a string to find in the list (exact match) [empty = end]: Hello
> String "Hello" not found.

> Type a string to find in the list (exact match) [empty = end]: Test 1
> String "Test 1" found at position 1 and removed.

> Printing list...

Test 2
Test 3, a little bit longer

> Type a string to find in the list (exact match) [empty = end]: Test 1
> String "Test 1" not found.

> Type a string to find in the list (exact match) [empty = end]: test 2
> String "test 2" not found.

> Type a string to find in the list (exact match) [empty = end]: Test 2
> String "Test 2" found at position 1 and removed.

> Printing list...

Test 3, a little bit longer

> Type a string to find in the list (exact match) [empty = end]: Test 3, a little bit longer
> String "Test 3, a little bit longer" found at position 1 and removed.

> Printing list...

[Empty list]


> Now getting a bit more complex... Let's create a list of lists of strings... An empty string finishes the list and an empty first string finishes the list of lists...

> Loading list 1...
        > String 1: Test 1a
        > String 2: Test 1b
        > String 3: Test 1c
        > String 4:
> Loading list 2...
        > String 1: Test 2a
        > String 2: Test 2b
        > String 3: Test 2c
        > String 4: Test 2d
        > String 5:
> Loading list 3...
        > String 1: Test 3a
        > String 2: Test 3b
        > String 3: This is a looooooooooooooooooooooong string
        > String 4:
> Loading list 4...
        > String 1:

> Entry finished. 3 list(s) loaded, 10 string(s) loaded.


> Printing lists (standard method)...

Test 1a
Test 1b
Test 1c

Test 2a
Test 2b
Test 2c
Test 2d

Test 3a
Test 3b
This is a looooooooooooooooooooooong string


> Printing lists (custom method)...

- List 0

Test 1a
Test 1b
Test 1c

- List 1

Test 2a
Test 2b
Test 2c
Test 2d

- List 2

Test 3a
Test 3b
This is a looooooooooooooooooooooong string

This project also uses the Simple C++ String Class to show the List class working with custom classes. Exactly the same code could be without problem by simply replacing “String” with “string” and including the standard library’s string header.

The code completely is portable.

It’s been developed, compiled and tested using wxDev-C++ for Windows with the MinGW compiler (included in the bundle).

GNU GPL v3 List is licensed under the GNU GPL v3 (attached)…



I’ve also tested the project for memory leaks using the cppMemDbg – Easy to use C++ memory leak detection library and it found no problems at all…

You can download the library output and the cppMemDbg adapted project here:



Now, finally, the download links:

Incoming search terms for the article:

Related posts:

  1. Simple C++ String Class
  2. cppMemDbg – Easy to use C++ memory leak detection library
  3. Attendance Control

]]> https://www.neoegm.com/tech/programming/c-cpp/simple-list-class/feed/ 0 Attendance Control https://www.neoegm.com/tech/programming/c-cpp/control-de-asistencia/ https://www.neoegm.com/tech/programming/c-cpp/control-de-asistencia/#comments Wed, 29 Jul 2009 21:00:42 +0000 http://www.neoegm.com/?p=476 Related posts:
  1. Attendance Control (wxWidgets Version)
  2. Simple C++ List Class
  3. Simple C++ String Class
]]> “Attendance Control” is a console application made as an exercise to integrate the different C++ concepts taught in class up to the middle of the year.

The main objective is to be able to develop a employee attendance control which records the times (and justifications, if corresponding) of each time the employees arrive, go to lunch, return from lunch and go back to home.

Sistema de control de asistencia de personal
--------------------------------------------

DNI:

The complete wording says:

Develop an employee attendance control system (for later verification of absences and late arrivals with their corresponding justifications) and its managemente private part (user registration and gathered data visualization).

The main screen must staywaiting for ID [DNI] and password.

There must be a preset admin user with DNI = -1234 and Password = prueba.

In case of being an administrator user, you’ll be able to access the management part, with the following options:

1- Alta de usuario [New user]
2- Lista de usuarios (datos adquiridos) [User list (gathered data)]
3- Salida a archivo [Output to file]
4- Cerrar la aplicación [Close the application]
0- Volver a la pantalla principal [Back to the main screen]

Otherwise, it will be asked which kind of action are you about to do (Arrival [Ingreso], return to home [Salida], lunch [Salida a almuerzo] or return from lunch [Retorno de almuerzo]) and its justification in case it corresponds, and they will be recorded along with the current time in a “Events” record of the corresponding user.

The user required data is:
DNI [ID]
Nombre completo [Full name]
Contraseña [Password]
Si es administrador [Whether it is administrator]
Eventos relacionados [Related events]

It’s desired to use as a base the class “PersonaBasica” [Basic person] which has already been developed by the IT department, whose header file “PersonaBasica.h” is attached below:

#include "String.h"
#include <iostream>

class PersonaBasica
{
	String m_sNombreCompleto;
	long m_nDNI;

public:
	//Construcción
	PersonaBasica() { m_nDNI = 0; }

	//Encapsulaciones
	long DNI() const { return m_nDNI; }
	void DNI(long val) { m_nDNI = val; }

	String NombreCompleto() const { return m_sNombreCompleto; }
	void NombreCompleto(String val) { m_sNombreCompleto = val; }
};

std::ostream& operator<<(std::ostream& oStream, PersonaBasica& rpPersonaBasica);

Note: the lengths of the data to be registered is completely unknown and rumors are circulating that the users are used to write pretty elaborate justifications.

When you first start the program, you can only log in as admin (-1234:prueba)…

Sistema de control de asistencia de personal
--------------------------------------------

DNI: -1234
Contraseña: prueba
Usuario "Administrador" reconocido.

Presione una tecla para continuar...

Then, you’ll get to the administration menu:

Sistema de control de asistencia de personal (ADMNISTRACION)
------------------------------------------------------------

1- Alta de usuario
2- Lista de usuarios (datos adquiridos)
3- Salida a archivo
4- Cerrar la aplicación
0- Volver a la pantalla principal

Ingrese la opción deseada:

The next step should be registering the different users using the first option:

Sistema de control de asistencia de personal (Alta de usuario)
--------------------------------------------------------------

DNI: 12345678
Nombre completo: Pedro Gutierrez
Password: 123bbb
Administrador [1 = Sí/0 = No]: 0

Persona agregada satisfatoriamente.

Presione una tecla para continuar...

After that, they’ll be able to sign in themselves:

Sistema de control de asistencia de personal
--------------------------------------------

DNI: 12345678
Contraseña: 123bbb
Usuario "Pedro Gutierrez" reconocido.

Presione una tecla para continuar...

So they’ll get into the attendance screen to record their actions:

Asistencia de "Pedro Gutierrez"
-------------------------------

Tipo de asistencia:
        1- Ingreso
        2- Salida
        3- Salida a almorzar
        4- Vuelta de almorzar
Selección: 1

Justificación (si corresponde): Llegué tarde porque había
corte de calles.

Evento agregado satisfactoriamente.

Presione una tecla para continuar...

Each of them ’till they go back to home…

Asistencia de "Pedro Gutierrez"
-------------------------------

Tipo de asistencia:
        1- Ingreso
        2- Salida
        3- Salida a almorzar
        4- Vuelta de almorzar
Selección: 2

Justificación (si corresponde): Me voy más temprano porque
tengo que llevar a mi hijo al médico.

Evento agregado satisfactoriamente.

Presione una tecla para continuar...

When any administrator wants to watch the full listing of users and actions, he simply logs in and goes to the second option of the administration menu:

Sistema de control de asistencia de personal (Lista de
usuarios)
------------------------------------------------------

DNI: -1234
Nombre completo: Administrador
Password: ********
Administrador: 1
Cantidad de eventos: 0
Eventos:

[Esta persona no posee eventos]


DNI: 12345678
Nombre completo: Pedro Gutierrez
Password: ********
Administrador: 0
Cantidad de eventos: 4
Eventos:

Hora: 28/07/2009 14:13:27
Tipo: Ingreso
Justificación: Llegué tarde porque había corte de calles.

Hora: 28/07/2009 14:14:23
Tipo: Salida a almorzar
Justificación:

Hora: 28/07/2009 14:14:44
Tipo: Vuelta de almorzar
Justificación:

Hora: 28/07/2009 14:14:52
Tipo: Salida
Justificación: Me voy más temprano porque tengo que llevar a
mi hijo al médico.

Presione una tecla para continuar...

If he wants, he can save that information to a file by using, instead, the third option:

Sistema de control de asistencia de personal (ADMNISTRACION)
------------------------------------------------------------

1- Alta de usuario
2- Lista de usuarios (datos adquiridos)
3- Salida a archivo
4- Cerrar la aplicación
0- Volver a la pantalla principal

Ingrese la opción deseada: 3

Ingrese la ruta del archivo a guardar: c:asistencia.txt
Archivo guardado satisfactoriamente

Presione una tecla para continuar...

Finally, he can close the program by going to the fourth option (losing all the data)…

Sistema de control de asistencia de personal (ADMNISTRACION)
------------------------------------------------------------

1- Alta de usuario
2- Lista de usuarios (datos adquiridos)
3- Salida a archivo
4- Cerrar la aplicación
0- Volver a la pantalla principal

Ingrese la opción deseada: 4
Saliendo de la aplicación...

Presione una tecla para continuar...

That’s the idea of the application…

Now I’ll leave the links for the ones who don’t want to solve it themselves (or the ones who just want to run it and watch it work).

The code is portable between Linux and Windows (I’ve tested it myself on both platforms and it worked seamlessly).

It’s been developed, compiled and tested using wxDev-C++ for Windows with the MinGW compiler (included in the bundle). In Linux, it was compiled using the GNU GCC compiler.

GNU GPL v3 ControlAsistencia is licensed under the GNU GPL v3 (attached)…

Update: minor bug in String.cpp fixed => version 1.01

Incoming search terms for the article:

Related posts:

  1. Attendance Control (wxWidgets Version)
  2. Simple C++ List Class
  3. Simple C++ String Class

]]> https://www.neoegm.com/tech/programming/c-cpp/control-de-asistencia/feed/ 0 Wake On LAN (Remotely power on a computer) https://www.neoegm.com/tech/software/tools/wake-on-lan/ https://www.neoegm.com/tech/software/tools/wake-on-lan/#comments Tue, 28 Jul 2009 22:00:36 +0000 http://www.neoegm.com/?p=414 Related posts:
  1. UpTime (How much time has the computer been powered on)
  2. Guitar Trainer
  3. Attendance Control
]]> Have you ever wondered how you could power on a computer remotely?

Well, with this program you can do it!

C:\>wol

Wake-On-Lan (WOL) Tool v1.0 by NeoEGM
http://www.neoegm.com/software/wake-on-lan/
-------------------------------------------

Usage: wol 

Wakes the computer with the specified MAC address.

Accepted MAC address formats: 01-4B-8E-00-52-A1
                              01-4b-8e-00-52-a1
                              01:4B:8E:00:52:A1
                              01:4b:8e:00:52:a1
                              014B.8E00.52A1
                              014b.8e00.52a1
                              014b8e0052a1
                              014B8E0052A1

You have to configure the remote computer (the one which will be powered on) to support the Wake-On-LAN feature. This is done in the CMOS settings looking for the “Power/ACPI” settings or something like that.

Then, you have to find out the MAC Address (sometimes called “Physical Address”) of the network adapter connected to the LAN. On Windows it’s done doing this from the console:

C:\>ipconfig /all

Windows IP Configuration

   Host Name . . . . . . . . . . . . : mypc1
   Primary Dns Suffix  . . . . . . . :
   Node Type . . . . . . . . . . . . : Unknown
   IP Routing Enabled. . . . . . . . : No
   WINS Proxy Enabled. . . . . . . . : No

Ethernet adapter Local Area Connection:

   Connection-specific DNS Suffix  . :
   Description . . . . . . . . . . . : Marvell Yukon 88E8056
PCI-E Gigabit Ethernet Controller
   Physical Address. . . . . . . . . : 00-1F-C2-14-B3-F4
   DHCP Enabled. . . . . . . . . . . : No
   IP Address. . . . . . . . . . . . : 192.168.0.1
   Subnet Mask . . . . . . . . . . . : 255.255.255.0
   Default Gateway . . . . . . . . . : 192.168.0.254
   DNS Servers . . . . . . . . . . . : 192.168.0.254

In this case, it’s “00-1F-C2-14-B3-F4″, so the tool can be used like this:

C:\>wol 00-1F-C2-14-B3-F4

Wake-On-Lan (WOL) Tool v1.0 by NeoEGM
http://www.neoegm.com/software/wake-on-lan/
-------------------------------------------

Wake-up packet sent to MAC address 00-1F-C2-14-B3-F4.

There are some restrictions that apply to the hardware, but a summary may be: the motherboard must support the “Wake-On-Lan (WOL)” feature and the NIC (network adapter) must have a wire called with that name connected to the motherboard. If the motherboard of the computer you want to power on is not so old and has an integrated (on-board) Ethernet card, then it’ll probably work.

GNU GPL v3 WakeOnLan is licensed under the GNU GPL v3 (attached)…

Now, the links…

Incoming search terms for the article:

Related posts:

  1. UpTime (How much time has the computer been powered on)
  2. Guitar Trainer
  3. Attendance Control

]]> https://www.neoegm.com/tech/software/tools/wake-on-lan/feed/ 0