STL: Using list and string

Credits: BS, OGC

A demostration of the usage of std::list and std::string to create part of a command management system for a console command interpreter.

Code:

//////////////////////////////////////////////////////////////////////////////////////////////////////////////////
//
//
// UTN FRGP TSP
// BS
// mail: david_bs@live.com
// web: Etalking.Com.Ar
// 2012
//
//////////////////////////////////////////////////////////////////////////////////////////////////////////////////

#include <windows.h>
#include <stdio.h>
#include <fstream.h>
#include <list>
#include <string>

using namespace std;

struct ScheduledCommand
{
	string comando; 
	int prioridad; 
};

typedef list<ScheduledCommand> ScheduleList;
ScheduleList scheduleList;

The functions to add, list and erase

Code:

void IngresarComando(){

	string cmd;
	char comando[21];
	memset(comando,0,sizeof(comando));
	cout << "Introduce a command" << endl;
	cin.getline(comando,20,'\n');
	cmd.assign(comando);

//	cout << const_cast<char*>(cmd.c_str()) << endl;
//	system("pause");

	if(cmd.empty())
	{
		list<ScheduledCommand>::iterator pos;
		for(pos=scheduleList.begin();pos!=scheduleList.end();++pos)
		{
			printf("pri:%d -- cmd:\"%s\"\n", (*pos).prioridad, (*pos).comando.c_str() );
		}
		return;
	}

	ScheduledCommand tmp;
	tmp.comando=cmd;
	tmp.prioridad=1;
	if(scheduleList.size()<32){
		scheduleList.push_back(tmp);
	}
}

void BorrarComandos(){

	scheduleList.erase(scheduleList.begin(),scheduleList.end());
}

void VerificarComandos(){

	cout << "\n";

	int cantidad=0;
	for( ScheduleList::iterator pos = scheduleList.begin(); pos != scheduleList.end(); ++pos)
	{
		// cantidad++;
		if( (*pos).prioridad == 1 )
		{
			cantidad++;
			cout << "Comando: " << const_cast<char*>((*pos).comando.c_str()) << endl;
			scheduleList.erase(pos);
			break;
		}
	}

	if(cantidad==0)
		cout << "There are no commands !" << endl;
}

Main function, used for testing purposes..

Code:

int main(){

	IngresarComando();
	IngresarComando();
	IngresarComando();

	VerificarComandos();
	VerificarComandos();
	VerificarComandos();

	BorrarComandos();

	VerificarComandos();

	cin.get();
	return 0;
}