Matrix [Effect]

/// Bibliotecas
#include <time.h>
#include <string>
#include <iostream>
#include <locale.h>
#include <windows.h>
using namespace std;

/// Programa
int main ( int argc , char *argv[] )
{
    // Variáveis
    int r;

    // Tamanho: 60
    char a[] = { 'a', 'b','c','d','e','f','g','h','i','j','k','l',
                 'm','n','o','p','q','r','s','t','u','v','x','z',
                 '1','2','3','4','5','6','7','8','9','0','!','@',
                 '#','$','%','¨','&','*','(',')','-','_','+','=',
                 '§','/','£','¢','¬','?','\\','[',']','^', '`','´'
                };

    // Sistemas
    setlocale(LC_ALL, "");
    srand( (unsigned) (time(NULL) ) );
    system("cls & color A");

    // Apresentação
    cout << " ========================== " << endl;
    system("echo  - Usuario: %username%");
    system("echo  - Computador: %computername%");
    system("echo  - Hora: %time:~0,-3%");
    system("echo  - Data: %date:/=-%");
    cout << " ========================== \n" << endl;

    for ( ; ; )
    {
        r = ( rand() % sizeof(a) );

        cout << " 1 " << a[r];
        cout << " 0 " << a[r];
        cout << " 1 " << a[r];
        cout << " 0 " << a[r];
        Sleep(3);
    }
    return(0);
}